/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-figure1-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 12:11:42,940 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 12:11:42,941 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 12:11:42,996 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 12:11:42,996 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 12:11:42,998 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 12:11:43,000 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 12:11:43,004 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 12:11:43,005 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 12:11:43,006 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 12:11:43,006 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 12:11:43,007 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 12:11:43,007 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 12:11:43,008 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 12:11:43,008 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 12:11:43,009 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 12:11:43,009 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 12:11:43,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 12:11:43,011 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 12:11:43,012 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 12:11:43,012 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 12:11:43,014 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 12:11:43,015 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 12:11:43,015 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 12:11:43,016 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-18 12:11:43,017 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-18 12:11:43,017 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-18 12:11:43,017 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-18 12:11:43,017 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-18 12:11:43,018 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-18 12:11:43,018 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-18 12:11:43,018 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-18 12:11:43,019 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-18 12:11:43,019 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-18 12:11:43,020 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-18 12:11:43,020 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-18 12:11:43,020 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-18 12:11:43,021 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-18 12:11:43,021 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 12:11:43,021 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 12:11:43,022 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 12:11:43,027 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf [2022-01-18 12:11:43,053 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 12:11:43,053 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 12:11:43,054 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 12:11:43,054 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 12:11:43,055 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 12:11:43,055 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 12:11:43,055 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 12:11:43,055 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 12:11:43,056 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 12:11:43,056 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 12:11:43,056 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 12:11:43,056 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 12:11:43,056 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 12:11:43,056 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 12:11:43,057 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 12:11:43,057 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 12:11:43,057 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 12:11:43,057 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 12:11:43,057 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 12:11:43,057 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 12:11:43,057 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 12:11:43,057 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 12:11:43,057 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 12:11:43,057 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 12:11:43,058 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 12:11:43,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 12:11:43,058 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 12:11:43,058 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 12:11:43,058 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 12:11:43,059 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 12:11:43,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 12:11:43,059 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 12:11:43,059 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 12:11:43,059 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2022-01-18 12:11:43,059 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 12:11:43,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 12:11:43,269 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 12:11:43,271 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 12:11:43,272 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 12:11:43,272 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 12:11:43,273 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-figure1-alt.wvr.c [2022-01-18 12:11:43,331 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b0c75ac8/d0396f05741146ef8958dfaffd82e7dd/FLAG940b46068 [2022-01-18 12:11:43,725 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 12:11:43,726 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-figure1-alt.wvr.c [2022-01-18 12:11:43,734 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b0c75ac8/d0396f05741146ef8958dfaffd82e7dd/FLAG940b46068 [2022-01-18 12:11:43,747 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b0c75ac8/d0396f05741146ef8958dfaffd82e7dd [2022-01-18 12:11:43,750 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 12:11:43,752 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 12:11:43,754 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 12:11:43,754 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 12:11:43,757 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 12:11:43,757 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 12:11:43" (1/1) ... [2022-01-18 12:11:43,759 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bc31330 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:11:43, skipping insertion in model container [2022-01-18 12:11:43,759 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 12:11:43" (1/1) ... [2022-01-18 12:11:43,764 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 12:11:43,776 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 12:11:43,918 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-figure1-alt.wvr.c[2087,2100] [2022-01-18 12:11:43,921 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 12:11:43,925 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 12:11:43,937 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-figure1-alt.wvr.c[2087,2100] [2022-01-18 12:11:43,938 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 12:11:43,947 INFO L208 MainTranslator]: Completed translation [2022-01-18 12:11:43,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:11:43 WrapperNode [2022-01-18 12:11:43,947 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 12:11:43,948 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 12:11:43,948 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 12:11:43,948 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 12:11:43,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:11:43" (1/1) ... [2022-01-18 12:11:43,958 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:11:43" (1/1) ... [2022-01-18 12:11:43,975 INFO L137 Inliner]: procedures = 21, calls = 25, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 76 [2022-01-18 12:11:43,976 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 12:11:43,976 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 12:11:43,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 12:11:43,977 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 12:11:43,982 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:11:43" (1/1) ... [2022-01-18 12:11:43,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:11:43" (1/1) ... [2022-01-18 12:11:43,990 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:11:43" (1/1) ... [2022-01-18 12:11:43,990 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:11:43" (1/1) ... [2022-01-18 12:11:44,001 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:11:43" (1/1) ... [2022-01-18 12:11:44,004 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:11:43" (1/1) ... [2022-01-18 12:11:44,005 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:11:43" (1/1) ... [2022-01-18 12:11:44,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 12:11:44,007 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 12:11:44,007 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 12:11:44,007 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 12:11:44,011 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:11:43" (1/1) ... [2022-01-18 12:11:44,017 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 12:11:44,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:11:44,035 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-18 12:11:44,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-18 12:11:44,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 12:11:44,066 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 12:11:44,066 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 12:11:44,066 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 12:11:44,066 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 12:11:44,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 12:11:44,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 12:11:44,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 12:11:44,066 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-18 12:11:44,066 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-18 12:11:44,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 12:11:44,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 12:11:44,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-18 12:11:44,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 12:11:44,068 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 12:11:44,139 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 12:11:44,140 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 12:11:44,280 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 12:11:44,308 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 12:11:44,309 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-18 12:11:44,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 12:11:44 BoogieIcfgContainer [2022-01-18 12:11:44,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 12:11:44,312 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 12:11:44,312 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 12:11:44,314 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 12:11:44,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 12:11:43" (1/3) ... [2022-01-18 12:11:44,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e7e974d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 12:11:44, skipping insertion in model container [2022-01-18 12:11:44,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:11:43" (2/3) ... [2022-01-18 12:11:44,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e7e974d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 12:11:44, skipping insertion in model container [2022-01-18 12:11:44,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 12:11:44" (3/3) ... [2022-01-18 12:11:44,316 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-figure1-alt.wvr.c [2022-01-18 12:11:44,319 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 12:11:44,319 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 12:11:44,320 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 12:11:44,320 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 12:11:44,353 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,353 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,354 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,354 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,354 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,354 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,355 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,355 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,355 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,355 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,355 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,355 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,356 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,356 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,356 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,356 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,356 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,356 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,356 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,356 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,357 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,357 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,357 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,357 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,357 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,358 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,358 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,358 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,358 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,358 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,358 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,359 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,359 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,359 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,359 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,359 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,359 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,360 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,360 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,360 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,360 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,360 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,360 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,360 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,361 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,361 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,361 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,361 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,363 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,363 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,364 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,364 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,364 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,364 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,364 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,365 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,365 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,365 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,365 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,365 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:11:44,368 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-18 12:11:44,398 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 12:11:44,404 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-18 12:11:44,404 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-18 12:11:44,419 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 90 places, 89 transitions, 194 flow [2022-01-18 12:11:44,467 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 449 states, 448 states have (on average 2.6339285714285716) internal successors, (1180), 448 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:11:44,470 INFO L276 IsEmpty]: Start isEmpty. Operand has 449 states, 448 states have (on average 2.6339285714285716) internal successors, (1180), 448 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:11:44,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-18 12:11:44,482 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:11:44,483 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:11:44,483 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:11:44,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:11:44,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1950336427, now seen corresponding path program 1 times [2022-01-18 12:11:44,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:11:44,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287521981] [2022-01-18 12:11:44,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:11:44,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:11:44,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:11:44,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:11:44,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:11:44,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287521981] [2022-01-18 12:11:44,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287521981] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:11:44,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:11:44,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 12:11:44,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000996713] [2022-01-18 12:11:44,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:11:44,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-18 12:11:44,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:11:44,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-18 12:11:44,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 12:11:44,729 INFO L87 Difference]: Start difference. First operand has 449 states, 448 states have (on average 2.6339285714285716) internal successors, (1180), 448 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:11:44,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:11:44,775 INFO L93 Difference]: Finished difference Result 449 states and 1097 transitions. [2022-01-18 12:11:44,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-18 12:11:44,777 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-18 12:11:44,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:11:44,794 INFO L225 Difference]: With dead ends: 449 [2022-01-18 12:11:44,794 INFO L226 Difference]: Without dead ends: 447 [2022-01-18 12:11:44,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 12:11:44,799 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:11:44,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 12:11:44,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2022-01-18 12:11:44,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2022-01-18 12:11:44,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 446 states have (on average 2.4551569506726456) internal successors, (1095), 446 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:11:44,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 1095 transitions. [2022-01-18 12:11:44,868 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 1095 transitions. Word has length 62 [2022-01-18 12:11:44,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:11:44,869 INFO L470 AbstractCegarLoop]: Abstraction has 447 states and 1095 transitions. [2022-01-18 12:11:44,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:11:44,869 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 1095 transitions. [2022-01-18 12:11:44,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-18 12:11:44,872 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:11:44,872 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:11:44,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 12:11:44,872 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:11:44,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:11:44,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1985794763, now seen corresponding path program 1 times [2022-01-18 12:11:44,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:11:44,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644964036] [2022-01-18 12:11:44,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:11:44,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:11:44,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:11:45,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:11:45,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:11:45,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644964036] [2022-01-18 12:11:45,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644964036] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:11:45,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:11:45,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-18 12:11:45,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923965430] [2022-01-18 12:11:45,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:11:45,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 12:11:45,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:11:45,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 12:11:45,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-01-18 12:11:45,492 INFO L87 Difference]: Start difference. First operand 447 states and 1095 transitions. Second operand has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:11:45,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:11:45,850 INFO L93 Difference]: Finished difference Result 693 states and 1636 transitions. [2022-01-18 12:11:45,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 12:11:45,850 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-18 12:11:45,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:11:45,853 INFO L225 Difference]: With dead ends: 693 [2022-01-18 12:11:45,853 INFO L226 Difference]: Without dead ends: 564 [2022-01-18 12:11:45,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=152, Invalid=268, Unknown=0, NotChecked=0, Total=420 [2022-01-18 12:11:45,854 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 208 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:11:45,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 524 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 12:11:45,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2022-01-18 12:11:45,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 486. [2022-01-18 12:11:45,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 485 states have (on average 2.4474226804123713) internal successors, (1187), 485 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:11:45,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 1187 transitions. [2022-01-18 12:11:45,866 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 1187 transitions. Word has length 62 [2022-01-18 12:11:45,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:11:45,866 INFO L470 AbstractCegarLoop]: Abstraction has 486 states and 1187 transitions. [2022-01-18 12:11:45,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:11:45,866 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 1187 transitions. [2022-01-18 12:11:45,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-18 12:11:45,868 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:11:45,868 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:11:45,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 12:11:45,869 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:11:45,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:11:45,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1810260605, now seen corresponding path program 2 times [2022-01-18 12:11:45,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:11:45,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960484829] [2022-01-18 12:11:45,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:11:45,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:11:45,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:11:46,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:11:46,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:11:46,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960484829] [2022-01-18 12:11:46,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960484829] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:11:46,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:11:46,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-18 12:11:46,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335873359] [2022-01-18 12:11:46,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:11:46,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 12:11:46,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:11:46,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 12:11:46,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-01-18 12:11:46,182 INFO L87 Difference]: Start difference. First operand 486 states and 1187 transitions. Second operand has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:11:46,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:11:46,475 INFO L93 Difference]: Finished difference Result 724 states and 1704 transitions. [2022-01-18 12:11:46,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 12:11:46,475 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-18 12:11:46,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:11:46,480 INFO L225 Difference]: With dead ends: 724 [2022-01-18 12:11:46,480 INFO L226 Difference]: Without dead ends: 673 [2022-01-18 12:11:46,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=267, Unknown=0, NotChecked=0, Total=420 [2022-01-18 12:11:46,485 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 250 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:11:46,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 568 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 12:11:46,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2022-01-18 12:11:46,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 502. [2022-01-18 12:11:46,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 501 states have (on average 2.465069860279441) internal successors, (1235), 501 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:11:46,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 1235 transitions. [2022-01-18 12:11:46,502 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 1235 transitions. Word has length 62 [2022-01-18 12:11:46,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:11:46,503 INFO L470 AbstractCegarLoop]: Abstraction has 502 states and 1235 transitions. [2022-01-18 12:11:46,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:11:46,504 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 1235 transitions. [2022-01-18 12:11:46,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-18 12:11:46,505 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:11:46,505 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:11:46,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 12:11:46,506 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:11:46,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:11:46,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1129232613, now seen corresponding path program 3 times [2022-01-18 12:11:46,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:11:46,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627010387] [2022-01-18 12:11:46,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:11:46,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:11:46,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:11:46,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:11:46,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:11:46,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627010387] [2022-01-18 12:11:46,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627010387] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:11:46,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:11:46,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-18 12:11:46,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705019107] [2022-01-18 12:11:46,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:11:46,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 12:11:46,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:11:46,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 12:11:46,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-01-18 12:11:46,841 INFO L87 Difference]: Start difference. First operand 502 states and 1235 transitions. Second operand has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:11:47,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:11:47,094 INFO L93 Difference]: Finished difference Result 670 states and 1593 transitions. [2022-01-18 12:11:47,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 12:11:47,094 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-18 12:11:47,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:11:47,097 INFO L225 Difference]: With dead ends: 670 [2022-01-18 12:11:47,097 INFO L226 Difference]: Without dead ends: 604 [2022-01-18 12:11:47,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=154, Invalid=266, Unknown=0, NotChecked=0, Total=420 [2022-01-18 12:11:47,098 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 284 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:11:47,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 431 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 12:11:47,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2022-01-18 12:11:47,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 502. [2022-01-18 12:11:47,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 501 states have (on average 2.4570858283433132) internal successors, (1231), 501 states have internal predecessors, (1231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:11:47,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 1231 transitions. [2022-01-18 12:11:47,109 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 1231 transitions. Word has length 62 [2022-01-18 12:11:47,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:11:47,109 INFO L470 AbstractCegarLoop]: Abstraction has 502 states and 1231 transitions. [2022-01-18 12:11:47,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:11:47,110 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 1231 transitions. [2022-01-18 12:11:47,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-18 12:11:47,111 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:11:47,111 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:11:47,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 12:11:47,111 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:11:47,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:11:47,112 INFO L85 PathProgramCache]: Analyzing trace with hash -79113043, now seen corresponding path program 4 times [2022-01-18 12:11:47,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:11:47,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431842937] [2022-01-18 12:11:47,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:11:47,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:11:47,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:11:47,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:11:47,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:11:47,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431842937] [2022-01-18 12:11:47,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431842937] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:11:47,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:11:47,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-18 12:11:47,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645050791] [2022-01-18 12:11:47,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:11:47,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 12:11:47,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:11:47,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 12:11:47,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-01-18 12:11:47,393 INFO L87 Difference]: Start difference. First operand 502 states and 1231 transitions. Second operand has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:11:47,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:11:47,678 INFO L93 Difference]: Finished difference Result 655 states and 1566 transitions. [2022-01-18 12:11:47,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 12:11:47,679 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-18 12:11:47,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:11:47,681 INFO L225 Difference]: With dead ends: 655 [2022-01-18 12:11:47,681 INFO L226 Difference]: Without dead ends: 604 [2022-01-18 12:11:47,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=166, Invalid=296, Unknown=0, NotChecked=0, Total=462 [2022-01-18 12:11:47,682 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 220 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:11:47,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 536 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 12:11:47,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2022-01-18 12:11:47,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 502. [2022-01-18 12:11:47,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 501 states have (on average 2.4570858283433132) internal successors, (1231), 501 states have internal predecessors, (1231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:11:47,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 1231 transitions. [2022-01-18 12:11:47,692 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 1231 transitions. Word has length 62 [2022-01-18 12:11:47,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:11:47,693 INFO L470 AbstractCegarLoop]: Abstraction has 502 states and 1231 transitions. [2022-01-18 12:11:47,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:11:47,693 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 1231 transitions. [2022-01-18 12:11:47,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-18 12:11:47,694 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:11:47,694 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:11:47,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 12:11:47,694 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:11:47,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:11:47,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1623942775, now seen corresponding path program 5 times [2022-01-18 12:11:47,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:11:47,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548422906] [2022-01-18 12:11:47,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:11:47,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:11:47,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:11:47,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:11:47,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:11:47,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548422906] [2022-01-18 12:11:47,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548422906] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:11:47,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:11:47,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-18 12:11:47,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261362597] [2022-01-18 12:11:47,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:11:47,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 12:11:47,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:11:47,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 12:11:47,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-01-18 12:11:47,962 INFO L87 Difference]: Start difference. First operand 502 states and 1231 transitions. Second operand has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:11:48,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:11:48,223 INFO L93 Difference]: Finished difference Result 679 states and 1612 transitions. [2022-01-18 12:11:48,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 12:11:48,224 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-18 12:11:48,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:11:48,226 INFO L225 Difference]: With dead ends: 679 [2022-01-18 12:11:48,226 INFO L226 Difference]: Without dead ends: 628 [2022-01-18 12:11:48,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=152, Invalid=268, Unknown=0, NotChecked=0, Total=420 [2022-01-18 12:11:48,227 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 191 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:11:48,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 530 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 12:11:48,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2022-01-18 12:11:48,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 502. [2022-01-18 12:11:48,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 501 states have (on average 2.4570858283433132) internal successors, (1231), 501 states have internal predecessors, (1231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:11:48,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 1231 transitions. [2022-01-18 12:11:48,237 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 1231 transitions. Word has length 62 [2022-01-18 12:11:48,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:11:48,237 INFO L470 AbstractCegarLoop]: Abstraction has 502 states and 1231 transitions. [2022-01-18 12:11:48,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:11:48,238 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 1231 transitions. [2022-01-18 12:11:48,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-18 12:11:48,239 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:11:48,239 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:11:48,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-18 12:11:48,239 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:11:48,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:11:48,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1989996529, now seen corresponding path program 6 times [2022-01-18 12:11:48,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:11:48,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139030114] [2022-01-18 12:11:48,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:11:48,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:11:48,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:11:48,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:11:48,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:11:48,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139030114] [2022-01-18 12:11:48,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139030114] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:11:48,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:11:48,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-18 12:11:48,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123602652] [2022-01-18 12:11:48,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:11:48,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 12:11:48,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:11:48,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 12:11:48,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-01-18 12:11:48,492 INFO L87 Difference]: Start difference. First operand 502 states and 1231 transitions. Second operand has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:11:48,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:11:48,728 INFO L93 Difference]: Finished difference Result 601 states and 1443 transitions. [2022-01-18 12:11:48,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 12:11:48,729 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-18 12:11:48,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:11:48,731 INFO L225 Difference]: With dead ends: 601 [2022-01-18 12:11:48,731 INFO L226 Difference]: Without dead ends: 535 [2022-01-18 12:11:48,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=267, Unknown=0, NotChecked=0, Total=420 [2022-01-18 12:11:48,731 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 153 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:11:48,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 506 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 12:11:48,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2022-01-18 12:11:48,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 483. [2022-01-18 12:11:48,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 2.4419087136929463) internal successors, (1177), 482 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:11:48,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 1177 transitions. [2022-01-18 12:11:48,740 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 1177 transitions. Word has length 62 [2022-01-18 12:11:48,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:11:48,741 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 1177 transitions. [2022-01-18 12:11:48,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:11:48,741 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 1177 transitions. [2022-01-18 12:11:48,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:11:48,742 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:11:48,742 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:11:48,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-18 12:11:48,742 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:11:48,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:11:48,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1860622977, now seen corresponding path program 1 times [2022-01-18 12:11:48,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:11:48,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530419840] [2022-01-18 12:11:48,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:11:48,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:11:48,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:11:48,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:11:48,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:11:48,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530419840] [2022-01-18 12:11:48,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530419840] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:11:48,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631346541] [2022-01-18 12:11:48,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:11:48,978 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:11:48,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:11:48,979 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:11:48,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-18 12:11:49,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:11:49,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 12:11:49,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:11:49,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:11:49,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:11:50,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:11:50,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631346541] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:11:50,147 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:11:50,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 36 [2022-01-18 12:11:50,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594920537] [2022-01-18 12:11:50,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:11:50,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 12:11:50,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:11:50,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 12:11:50,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1082, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 12:11:50,149 INFO L87 Difference]: Start difference. First operand 483 states and 1177 transitions. Second operand has 36 states, 36 states have (on average 3.7222222222222223) internal successors, (134), 36 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:11:51,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:11:51,333 INFO L93 Difference]: Finished difference Result 1313 states and 3214 transitions. [2022-01-18 12:11:51,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 12:11:51,333 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.7222222222222223) internal successors, (134), 36 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:11:51,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:11:51,337 INFO L225 Difference]: With dead ends: 1313 [2022-01-18 12:11:51,338 INFO L226 Difference]: Without dead ends: 1232 [2022-01-18 12:11:51,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 111 SyntacticMatches, 3 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1173 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=638, Invalid=3394, Unknown=0, NotChecked=0, Total=4032 [2022-01-18 12:11:51,339 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 852 mSDsluCounter, 1937 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 1955 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:11:51,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [852 Valid, 1955 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 12:11:51,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2022-01-18 12:11:51,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 719. [2022-01-18 12:11:51,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 719 states, 718 states have (on average 2.518105849582173) internal successors, (1808), 718 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:11:51,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 1808 transitions. [2022-01-18 12:11:51,357 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 1808 transitions. Word has length 67 [2022-01-18 12:11:51,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:11:51,357 INFO L470 AbstractCegarLoop]: Abstraction has 719 states and 1808 transitions. [2022-01-18 12:11:51,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.7222222222222223) internal successors, (134), 36 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:11:51,357 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 1808 transitions. [2022-01-18 12:11:51,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:11:51,362 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:11:51,362 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:11:51,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-18 12:11:51,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:11:51,577 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:11:51,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:11:51,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1963152621, now seen corresponding path program 2 times [2022-01-18 12:11:51,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:11:51,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214785951] [2022-01-18 12:11:51,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:11:51,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:11:51,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:11:51,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:11:51,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:11:51,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214785951] [2022-01-18 12:11:51,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214785951] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:11:51,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326799768] [2022-01-18 12:11:51,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:11:51,827 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:11:51,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:11:51,840 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:11:51,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-18 12:11:51,889 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:11:51,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:11:51,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 12:11:51,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:11:52,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:11:52,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:11:53,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:11:53,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326799768] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:11:53,010 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:11:53,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 36 [2022-01-18 12:11:53,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727194865] [2022-01-18 12:11:53,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:11:53,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 12:11:53,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:11:53,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 12:11:53,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1099, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 12:11:53,012 INFO L87 Difference]: Start difference. First operand 719 states and 1808 transitions. Second operand has 36 states, 36 states have (on average 3.7222222222222223) internal successors, (134), 36 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:11:56,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:11:56,076 INFO L93 Difference]: Finished difference Result 2400 states and 6041 transitions. [2022-01-18 12:11:56,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-18 12:11:56,076 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.7222222222222223) internal successors, (134), 36 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:11:56,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:11:56,085 INFO L225 Difference]: With dead ends: 2400 [2022-01-18 12:11:56,086 INFO L226 Difference]: Without dead ends: 2319 [2022-01-18 12:11:56,088 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 111 SyntacticMatches, 3 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3102 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1392, Invalid=8910, Unknown=0, NotChecked=0, Total=10302 [2022-01-18 12:11:56,088 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 1030 mSDsluCounter, 2885 mSDsCounter, 0 mSdLazyCounter, 1504 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1030 SdHoareTripleChecker+Valid, 2858 SdHoareTripleChecker+Invalid, 1609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 12:11:56,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1030 Valid, 2858 Invalid, 1609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1504 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 12:11:56,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2319 states. [2022-01-18 12:11:56,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2319 to 739. [2022-01-18 12:11:56,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 739 states, 738 states have (on average 2.535230352303523) internal successors, (1871), 738 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:11:56,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 1871 transitions. [2022-01-18 12:11:56,111 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 1871 transitions. Word has length 67 [2022-01-18 12:11:56,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:11:56,112 INFO L470 AbstractCegarLoop]: Abstraction has 739 states and 1871 transitions. [2022-01-18 12:11:56,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.7222222222222223) internal successors, (134), 36 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:11:56,112 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 1871 transitions. [2022-01-18 12:11:56,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:11:56,113 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:11:56,113 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:11:56,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-18 12:11:56,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-01-18 12:11:56,324 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:11:56,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:11:56,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1661878945, now seen corresponding path program 3 times [2022-01-18 12:11:56,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:11:56,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330919313] [2022-01-18 12:11:56,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:11:56,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:11:56,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:11:56,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:11:56,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:11:56,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330919313] [2022-01-18 12:11:56,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330919313] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:11:56,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57586070] [2022-01-18 12:11:56,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:11:56,550 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:11:56,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:11:56,552 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:11:56,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-18 12:11:56,600 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 12:11:56,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:11:56,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 12:11:56,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:11:57,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:11:57,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:11:57,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:11:57,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57586070] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:11:57,708 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:11:57,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 36 [2022-01-18 12:11:57,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618249718] [2022-01-18 12:11:57,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:11:57,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 12:11:57,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:11:57,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 12:11:57,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1090, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 12:11:57,710 INFO L87 Difference]: Start difference. First operand 739 states and 1871 transitions. Second operand has 36 states, 36 states have (on average 3.7222222222222223) internal successors, (134), 36 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:12:01,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:12:01,354 INFO L93 Difference]: Finished difference Result 2191 states and 5430 transitions. [2022-01-18 12:12:01,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-01-18 12:12:01,355 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.7222222222222223) internal successors, (134), 36 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:12:01,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:12:01,363 INFO L225 Difference]: With dead ends: 2191 [2022-01-18 12:12:01,363 INFO L226 Difference]: Without dead ends: 2059 [2022-01-18 12:12:01,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 111 SyntacticMatches, 3 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4063 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1872, Invalid=10784, Unknown=0, NotChecked=0, Total=12656 [2022-01-18 12:12:01,366 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 1357 mSDsluCounter, 2625 mSDsCounter, 0 mSdLazyCounter, 1463 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1357 SdHoareTripleChecker+Valid, 2630 SdHoareTripleChecker+Invalid, 1596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 12:12:01,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1357 Valid, 2630 Invalid, 1596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1463 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 12:12:01,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2059 states. [2022-01-18 12:12:01,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2059 to 809. [2022-01-18 12:12:01,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 808 states have (on average 2.6113861386138613) internal successors, (2110), 808 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:12:01,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 2110 transitions. [2022-01-18 12:12:01,388 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 2110 transitions. Word has length 67 [2022-01-18 12:12:01,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:12:01,388 INFO L470 AbstractCegarLoop]: Abstraction has 809 states and 2110 transitions. [2022-01-18 12:12:01,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.7222222222222223) internal successors, (134), 36 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:12:01,389 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 2110 transitions. [2022-01-18 12:12:01,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:12:01,390 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:12:01,390 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:12:01,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-18 12:12:01,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:12:01,609 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:12:01,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:12:01,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1199640043, now seen corresponding path program 4 times [2022-01-18 12:12:01,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:12:01,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460562718] [2022-01-18 12:12:01,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:12:01,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:12:01,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:12:01,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:12:01,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:12:01,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460562718] [2022-01-18 12:12:01,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460562718] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:12:01,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698553970] [2022-01-18 12:12:01,823 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:12:01,823 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:12:01,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:12:01,824 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:12:01,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-18 12:12:01,869 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:12:01,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:12:01,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 12:12:01,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:12:02,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:12:02,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:12:02,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:12:02,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698553970] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:12:02,855 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:12:02,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 36 [2022-01-18 12:12:02,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681689576] [2022-01-18 12:12:02,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:12:02,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 12:12:02,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:12:02,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 12:12:02,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1086, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 12:12:02,856 INFO L87 Difference]: Start difference. First operand 809 states and 2110 transitions. Second operand has 36 states, 36 states have (on average 3.6666666666666665) internal successors, (132), 36 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:12:04,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:12:04,748 INFO L93 Difference]: Finished difference Result 1833 states and 4534 transitions. [2022-01-18 12:12:04,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-18 12:12:04,748 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.6666666666666665) internal successors, (132), 36 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:12:04,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:12:04,754 INFO L225 Difference]: With dead ends: 1833 [2022-01-18 12:12:04,754 INFO L226 Difference]: Without dead ends: 1731 [2022-01-18 12:12:04,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 111 SyntacticMatches, 3 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1851 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1082, Invalid=5560, Unknown=0, NotChecked=0, Total=6642 [2022-01-18 12:12:04,756 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 989 mSDsluCounter, 2929 mSDsCounter, 0 mSdLazyCounter, 1322 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 2912 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:12:04,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [989 Valid, 2912 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1322 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:12:04,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2022-01-18 12:12:04,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 824. [2022-01-18 12:12:04,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 823 states have (on average 2.5880923450789792) internal successors, (2130), 823 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:12:04,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 2130 transitions. [2022-01-18 12:12:04,777 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 2130 transitions. Word has length 67 [2022-01-18 12:12:04,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:12:04,777 INFO L470 AbstractCegarLoop]: Abstraction has 824 states and 2130 transitions. [2022-01-18 12:12:04,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.6666666666666665) internal successors, (132), 36 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:12:04,777 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 2130 transitions. [2022-01-18 12:12:04,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:12:04,779 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:12:04,779 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:12:04,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-18 12:12:04,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:12:04,996 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:12:04,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:12:04,996 INFO L85 PathProgramCache]: Analyzing trace with hash -596174201, now seen corresponding path program 5 times [2022-01-18 12:12:04,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:12:04,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879041970] [2022-01-18 12:12:04,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:12:04,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:12:05,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:12:05,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:12:05,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:12:05,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879041970] [2022-01-18 12:12:05,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879041970] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:12:05,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043792212] [2022-01-18 12:12:05,236 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:12:05,237 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:12:05,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:12:05,238 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:12:05,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-18 12:12:05,284 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:12:05,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:12:05,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 12:12:05,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:12:05,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:12:05,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:12:06,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:12:06,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043792212] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:12:06,150 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:12:06,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 35 [2022-01-18 12:12:06,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137226159] [2022-01-18 12:12:06,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:12:06,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-18 12:12:06,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:12:06,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-18 12:12:06,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1034, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 12:12:06,154 INFO L87 Difference]: Start difference. First operand 824 states and 2130 transitions. Second operand has 35 states, 35 states have (on average 3.857142857142857) internal successors, (135), 35 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:12:07,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:12:07,766 INFO L93 Difference]: Finished difference Result 1950 states and 4935 transitions. [2022-01-18 12:12:07,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-18 12:12:07,766 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.857142857142857) internal successors, (135), 35 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:12:07,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:12:07,772 INFO L225 Difference]: With dead ends: 1950 [2022-01-18 12:12:07,773 INFO L226 Difference]: Without dead ends: 1869 [2022-01-18 12:12:07,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 113 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1604 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=796, Invalid=4904, Unknown=0, NotChecked=0, Total=5700 [2022-01-18 12:12:07,774 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 657 mSDsluCounter, 2831 mSDsCounter, 0 mSdLazyCounter, 1303 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 2805 SdHoareTripleChecker+Invalid, 1364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:12:07,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [657 Valid, 2805 Invalid, 1364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1303 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:12:07,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1869 states. [2022-01-18 12:12:07,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1869 to 846. [2022-01-18 12:12:07,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 845 states have (on average 2.596449704142012) internal successors, (2194), 845 states have internal predecessors, (2194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:12:07,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 2194 transitions. [2022-01-18 12:12:07,796 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 2194 transitions. Word has length 67 [2022-01-18 12:12:07,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:12:07,796 INFO L470 AbstractCegarLoop]: Abstraction has 846 states and 2194 transitions. [2022-01-18 12:12:07,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.857142857142857) internal successors, (135), 35 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:12:07,796 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 2194 transitions. [2022-01-18 12:12:07,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:12:07,797 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:12:07,797 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:12:07,816 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-01-18 12:12:08,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-01-18 12:12:08,011 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:12:08,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:12:08,012 INFO L85 PathProgramCache]: Analyzing trace with hash -897447877, now seen corresponding path program 6 times [2022-01-18 12:12:08,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:12:08,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895794815] [2022-01-18 12:12:08,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:12:08,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:12:08,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:12:08,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:12:08,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:12:08,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895794815] [2022-01-18 12:12:08,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895794815] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:12:08,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231621637] [2022-01-18 12:12:08,200 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:12:08,200 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:12:08,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:12:08,201 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:12:08,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-18 12:12:08,245 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 12:12:08,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:12:08,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 12:12:08,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:12:08,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:12:08,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:12:09,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:12:09,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231621637] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:12:09,254 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:12:09,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 36 [2022-01-18 12:12:09,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697341675] [2022-01-18 12:12:09,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:12:09,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 12:12:09,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:12:09,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 12:12:09,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1097, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 12:12:09,255 INFO L87 Difference]: Start difference. First operand 846 states and 2194 transitions. Second operand has 36 states, 36 states have (on average 3.7222222222222223) internal successors, (134), 36 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:12:14,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:12:14,183 INFO L93 Difference]: Finished difference Result 3476 states and 8862 transitions. [2022-01-18 12:12:14,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-01-18 12:12:14,184 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.7222222222222223) internal successors, (134), 36 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:12:14,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:12:14,196 INFO L225 Difference]: With dead ends: 3476 [2022-01-18 12:12:14,196 INFO L226 Difference]: Without dead ends: 3344 [2022-01-18 12:12:14,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 111 SyntacticMatches, 3 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8205 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=3053, Invalid=19297, Unknown=0, NotChecked=0, Total=22350 [2022-01-18 12:12:14,200 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 1729 mSDsluCounter, 3607 mSDsCounter, 0 mSdLazyCounter, 1750 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1729 SdHoareTripleChecker+Valid, 3572 SdHoareTripleChecker+Invalid, 1920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 12:12:14,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1729 Valid, 3572 Invalid, 1920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1750 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 12:12:14,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3344 states. [2022-01-18 12:12:14,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3344 to 898. [2022-01-18 12:12:14,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 898 states, 897 states have (on average 2.613154960981048) internal successors, (2344), 897 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:12:14,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 2344 transitions. [2022-01-18 12:12:14,240 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 2344 transitions. Word has length 67 [2022-01-18 12:12:14,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:12:14,240 INFO L470 AbstractCegarLoop]: Abstraction has 898 states and 2344 transitions. [2022-01-18 12:12:14,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.7222222222222223) internal successors, (134), 36 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:12:14,241 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 2344 transitions. [2022-01-18 12:12:14,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:12:14,242 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:12:14,242 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:12:14,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-18 12:12:14,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:12:14,463 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:12:14,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:12:14,463 INFO L85 PathProgramCache]: Analyzing trace with hash 536000431, now seen corresponding path program 7 times [2022-01-18 12:12:14,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:12:14,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919998483] [2022-01-18 12:12:14,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:12:14,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:12:14,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:12:14,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:12:14,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:12:14,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919998483] [2022-01-18 12:12:14,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919998483] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:12:14,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55568465] [2022-01-18 12:12:14,660 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:12:14,660 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:12:14,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:12:14,661 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:12:14,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-18 12:12:14,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:12:14,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 12:12:14,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:12:15,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:12:15,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:12:15,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:12:15,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55568465] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:12:15,747 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:12:15,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 36 [2022-01-18 12:12:15,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357381678] [2022-01-18 12:12:15,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:12:15,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 12:12:15,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:12:15,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 12:12:15,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1094, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 12:12:15,748 INFO L87 Difference]: Start difference. First operand 898 states and 2344 transitions. Second operand has 36 states, 36 states have (on average 3.6666666666666665) internal successors, (132), 36 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:12:19,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:12:19,202 INFO L93 Difference]: Finished difference Result 3086 states and 7832 transitions. [2022-01-18 12:12:19,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-01-18 12:12:19,203 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.6666666666666665) internal successors, (132), 36 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:12:19,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:12:19,212 INFO L225 Difference]: With dead ends: 3086 [2022-01-18 12:12:19,213 INFO L226 Difference]: Without dead ends: 2984 [2022-01-18 12:12:19,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 111 SyntacticMatches, 3 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4923 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2383, Invalid=12137, Unknown=0, NotChecked=0, Total=14520 [2022-01-18 12:12:19,215 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 1910 mSDsluCounter, 4024 mSDsCounter, 0 mSdLazyCounter, 1796 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1910 SdHoareTripleChecker+Valid, 3975 SdHoareTripleChecker+Invalid, 2016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 1796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 12:12:19,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1910 Valid, 3975 Invalid, 2016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 1796 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 12:12:19,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2984 states. [2022-01-18 12:12:19,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2984 to 886. [2022-01-18 12:12:19,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 886 states, 885 states have (on average 2.5762711864406778) internal successors, (2280), 885 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:12:19,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 2280 transitions. [2022-01-18 12:12:19,240 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 2280 transitions. Word has length 67 [2022-01-18 12:12:19,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:12:19,240 INFO L470 AbstractCegarLoop]: Abstraction has 886 states and 2280 transitions. [2022-01-18 12:12:19,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.6666666666666665) internal successors, (132), 36 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:12:19,240 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 2280 transitions. [2022-01-18 12:12:19,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:12:19,242 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:12:19,242 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:12:19,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-18 12:12:19,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:12:19,460 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:12:19,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:12:19,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1726094591, now seen corresponding path program 8 times [2022-01-18 12:12:19,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:12:19,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949928962] [2022-01-18 12:12:19,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:12:19,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:12:19,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:12:19,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:12:19,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:12:19,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949928962] [2022-01-18 12:12:19,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949928962] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:12:19,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019516141] [2022-01-18 12:12:19,652 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:12:19,652 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:12:19,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:12:19,653 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:12:19,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-18 12:12:19,701 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:12:19,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:12:19,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 12:12:19,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:12:20,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:12:20,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:12:20,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:12:20,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019516141] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:12:20,652 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:12:20,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 36 [2022-01-18 12:12:20,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639566259] [2022-01-18 12:12:20,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:12:20,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 12:12:20,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:12:20,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 12:12:20,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1075, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 12:12:20,654 INFO L87 Difference]: Start difference. First operand 886 states and 2280 transitions. Second operand has 36 states, 36 states have (on average 3.7222222222222223) internal successors, (134), 36 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:12:23,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:12:23,792 INFO L93 Difference]: Finished difference Result 2992 states and 7388 transitions. [2022-01-18 12:12:23,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-01-18 12:12:23,792 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.7222222222222223) internal successors, (134), 36 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:12:23,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:12:23,800 INFO L225 Difference]: With dead ends: 2992 [2022-01-18 12:12:23,800 INFO L226 Difference]: Without dead ends: 2881 [2022-01-18 12:12:23,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 111 SyntacticMatches, 3 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3666 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1698, Invalid=9432, Unknown=0, NotChecked=0, Total=11130 [2022-01-18 12:12:23,801 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 1342 mSDsluCounter, 3270 mSDsCounter, 0 mSdLazyCounter, 1453 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1342 SdHoareTripleChecker+Valid, 3214 SdHoareTripleChecker+Invalid, 1559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:12:23,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1342 Valid, 3214 Invalid, 1559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1453 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:12:23,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2022-01-18 12:12:23,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 926. [2022-01-18 12:12:23,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 925 states have (on average 2.595675675675676) internal successors, (2401), 925 states have internal predecessors, (2401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:12:23,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 2401 transitions. [2022-01-18 12:12:23,825 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 2401 transitions. Word has length 67 [2022-01-18 12:12:23,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:12:23,825 INFO L470 AbstractCegarLoop]: Abstraction has 926 states and 2401 transitions. [2022-01-18 12:12:23,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.7222222222222223) internal successors, (134), 36 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:12:23,826 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 2401 transitions. [2022-01-18 12:12:23,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:12:23,827 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:12:23,827 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:12:23,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-18 12:12:24,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-01-18 12:12:24,044 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:12:24,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:12:24,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1135424397, now seen corresponding path program 9 times [2022-01-18 12:12:24,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:12:24,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482311279] [2022-01-18 12:12:24,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:12:24,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:12:24,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:12:24,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:12:24,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:12:24,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482311279] [2022-01-18 12:12:24,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482311279] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:12:24,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493654878] [2022-01-18 12:12:24,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:12:24,258 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:12:24,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:12:24,259 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:12:24,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-18 12:12:24,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 12:12:24,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:12:24,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 12:12:24,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:12:24,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:12:24,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:12:25,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:12:25,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493654878] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:12:25,232 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:12:25,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 36 [2022-01-18 12:12:25,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969171442] [2022-01-18 12:12:25,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:12:25,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 12:12:25,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:12:25,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 12:12:25,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1075, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 12:12:25,233 INFO L87 Difference]: Start difference. First operand 926 states and 2401 transitions. Second operand has 36 states, 36 states have (on average 3.6666666666666665) internal successors, (132), 36 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:12:28,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:12:28,291 INFO L93 Difference]: Finished difference Result 2645 states and 6466 transitions. [2022-01-18 12:12:28,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-18 12:12:28,291 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.6666666666666665) internal successors, (132), 36 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:12:28,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:12:28,296 INFO L225 Difference]: With dead ends: 2645 [2022-01-18 12:12:28,297 INFO L226 Difference]: Without dead ends: 2594 [2022-01-18 12:12:28,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 111 SyntacticMatches, 3 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3693 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1763, Invalid=9579, Unknown=0, NotChecked=0, Total=11342 [2022-01-18 12:12:28,299 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 1538 mSDsluCounter, 3126 mSDsCounter, 0 mSdLazyCounter, 1375 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1538 SdHoareTripleChecker+Valid, 3105 SdHoareTripleChecker+Invalid, 1508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:12:28,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1538 Valid, 3105 Invalid, 1508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1375 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:12:28,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2594 states. [2022-01-18 12:12:28,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2594 to 918. [2022-01-18 12:12:28,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 918 states, 917 states have (on average 2.5812431842966195) internal successors, (2367), 917 states have internal predecessors, (2367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:12:28,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 2367 transitions. [2022-01-18 12:12:28,322 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 2367 transitions. Word has length 67 [2022-01-18 12:12:28,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:12:28,322 INFO L470 AbstractCegarLoop]: Abstraction has 918 states and 2367 transitions. [2022-01-18 12:12:28,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.6666666666666665) internal successors, (132), 36 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:12:28,323 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 2367 transitions. [2022-01-18 12:12:28,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:12:28,324 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:12:28,324 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:12:28,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-18 12:12:28,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-01-18 12:12:28,541 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:12:28,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:12:28,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1350924167, now seen corresponding path program 10 times [2022-01-18 12:12:28,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:12:28,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961981193] [2022-01-18 12:12:28,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:12:28,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:12:28,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:12:28,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:12:28,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:12:28,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961981193] [2022-01-18 12:12:28,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961981193] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:12:28,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637157949] [2022-01-18 12:12:28,723 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:12:28,723 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:12:28,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:12:28,724 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:12:28,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-18 12:12:28,765 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:12:28,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:12:28,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 12:12:28,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:12:29,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:12:29,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:12:29,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:12:29,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637157949] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:12:29,643 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:12:29,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 36 [2022-01-18 12:12:29,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835283502] [2022-01-18 12:12:29,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:12:29,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 12:12:29,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:12:29,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 12:12:29,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1064, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 12:12:29,644 INFO L87 Difference]: Start difference. First operand 918 states and 2367 transitions. Second operand has 36 states, 36 states have (on average 3.6666666666666665) internal successors, (132), 36 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:12:30,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:12:30,915 INFO L93 Difference]: Finished difference Result 1766 states and 4303 transitions. [2022-01-18 12:12:30,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 12:12:30,916 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.6666666666666665) internal successors, (132), 36 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:12:30,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:12:30,919 INFO L225 Difference]: With dead ends: 1766 [2022-01-18 12:12:30,919 INFO L226 Difference]: Without dead ends: 1715 [2022-01-18 12:12:30,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 111 SyntacticMatches, 3 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1331 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=771, Invalid=3921, Unknown=0, NotChecked=0, Total=4692 [2022-01-18 12:12:30,921 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 921 mSDsluCounter, 3149 mSDsCounter, 0 mSdLazyCounter, 1231 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 3091 SdHoareTripleChecker+Invalid, 1294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:12:30,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [921 Valid, 3091 Invalid, 1294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1231 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:12:30,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1715 states. [2022-01-18 12:12:30,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1715 to 918. [2022-01-18 12:12:30,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 918 states, 917 states have (on average 2.5812431842966195) internal successors, (2367), 917 states have internal predecessors, (2367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:12:30,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 2367 transitions. [2022-01-18 12:12:30,939 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 2367 transitions. Word has length 67 [2022-01-18 12:12:30,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:12:30,939 INFO L470 AbstractCegarLoop]: Abstraction has 918 states and 2367 transitions. [2022-01-18 12:12:30,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.6666666666666665) internal successors, (132), 36 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:12:30,940 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 2367 transitions. [2022-01-18 12:12:30,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:12:30,941 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:12:30,941 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:12:30,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-18 12:12:31,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-01-18 12:12:31,155 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:12:31,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:12:31,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1703935707, now seen corresponding path program 11 times [2022-01-18 12:12:31,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:12:31,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223192701] [2022-01-18 12:12:31,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:12:31,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:12:31,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:12:31,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:12:31,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:12:31,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223192701] [2022-01-18 12:12:31,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223192701] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:12:31,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366681208] [2022-01-18 12:12:31,409 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:12:31,409 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:12:31,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:12:31,410 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:12:31,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-18 12:12:31,457 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:12:31,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:12:31,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 12:12:31,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:12:31,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:12:31,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:12:32,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:12:32,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366681208] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:12:32,376 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:12:32,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 36 [2022-01-18 12:12:32,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96373803] [2022-01-18 12:12:32,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:12:32,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 12:12:32,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:12:32,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 12:12:32,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=1038, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 12:12:32,377 INFO L87 Difference]: Start difference. First operand 918 states and 2367 transitions. Second operand has 36 states, 36 states have (on average 3.5833333333333335) internal successors, (129), 36 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:12:32,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:12:32,997 INFO L93 Difference]: Finished difference Result 1428 states and 3582 transitions. [2022-01-18 12:12:32,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 12:12:32,998 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.5833333333333335) internal successors, (129), 36 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:12:32,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:12:33,001 INFO L225 Difference]: With dead ends: 1428 [2022-01-18 12:12:33,001 INFO L226 Difference]: Without dead ends: 1377 [2022-01-18 12:12:33,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 111 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=489, Invalid=2163, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 12:12:33,002 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 354 mSDsluCounter, 1171 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 12:12:33,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [354 Valid, 1222 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 12:12:33,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1377 states. [2022-01-18 12:12:33,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1377 to 934. [2022-01-18 12:12:33,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 934 states, 933 states have (on average 2.5841371918542335) internal successors, (2411), 933 states have internal predecessors, (2411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:12:33,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 2411 transitions. [2022-01-18 12:12:33,018 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 2411 transitions. Word has length 67 [2022-01-18 12:12:33,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:12:33,018 INFO L470 AbstractCegarLoop]: Abstraction has 934 states and 2411 transitions. [2022-01-18 12:12:33,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.5833333333333335) internal successors, (129), 36 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:12:33,018 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 2411 transitions. [2022-01-18 12:12:33,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:12:33,020 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:12:33,020 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:12:33,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-01-18 12:12:33,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-01-18 12:12:33,233 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:12:33,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:12:33,233 INFO L85 PathProgramCache]: Analyzing trace with hash 938600315, now seen corresponding path program 12 times [2022-01-18 12:12:33,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:12:33,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538632616] [2022-01-18 12:12:33,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:12:33,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:12:33,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:12:33,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:12:33,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:12:33,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538632616] [2022-01-18 12:12:33,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538632616] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:12:33,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527680729] [2022-01-18 12:12:33,408 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:12:33,408 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:12:33,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:12:33,409 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:12:33,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-18 12:12:33,459 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 12:12:33,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:12:33,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 12:12:33,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:12:33,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:12:33,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:12:34,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:12:34,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527680729] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:12:34,459 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:12:34,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 37 [2022-01-18 12:12:34,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461402300] [2022-01-18 12:12:34,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:12:34,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 12:12:34,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:12:34,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 12:12:34,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=1100, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 12:12:34,460 INFO L87 Difference]: Start difference. First operand 934 states and 2411 transitions. Second operand has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:12:35,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:12:35,185 INFO L93 Difference]: Finished difference Result 1414 states and 3548 transitions. [2022-01-18 12:12:35,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-18 12:12:35,185 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:12:35,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:12:35,188 INFO L225 Difference]: With dead ends: 1414 [2022-01-18 12:12:35,188 INFO L226 Difference]: Without dead ends: 1363 [2022-01-18 12:12:35,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 111 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 764 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=551, Invalid=2311, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 12:12:35,189 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 366 mSDsluCounter, 1551 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 1593 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 12:12:35,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [366 Valid, 1593 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 12:12:35,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2022-01-18 12:12:35,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 946. [2022-01-18 12:12:35,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 945 states have (on average 2.582010582010582) internal successors, (2440), 945 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:12:35,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 2440 transitions. [2022-01-18 12:12:35,205 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 2440 transitions. Word has length 67 [2022-01-18 12:12:35,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:12:35,205 INFO L470 AbstractCegarLoop]: Abstraction has 946 states and 2440 transitions. [2022-01-18 12:12:35,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:12:35,205 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 2440 transitions. [2022-01-18 12:12:35,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:12:35,207 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:12:35,207 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:12:35,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-18 12:12:35,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:12:35,412 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:12:35,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:12:35,412 INFO L85 PathProgramCache]: Analyzing trace with hash -345043983, now seen corresponding path program 13 times [2022-01-18 12:12:35,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:12:35,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106679700] [2022-01-18 12:12:35,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:12:35,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:12:35,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:12:35,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:12:35,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:12:35,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106679700] [2022-01-18 12:12:35,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106679700] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:12:35,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525528252] [2022-01-18 12:12:35,618 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:12:35,618 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:12:35,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:12:35,628 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:12:35,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-18 12:12:35,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:12:35,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 12:12:35,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:12:36,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:12:36,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:12:36,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:12:36,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525528252] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:12:36,665 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:12:36,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 37 [2022-01-18 12:12:36,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379158218] [2022-01-18 12:12:36,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:12:36,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 12:12:36,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:12:36,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 12:12:36,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=1098, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 12:12:36,666 INFO L87 Difference]: Start difference. First operand 946 states and 2440 transitions. Second operand has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:12:37,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:12:37,612 INFO L93 Difference]: Finished difference Result 1636 states and 4074 transitions. [2022-01-18 12:12:37,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 12:12:37,613 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:12:37,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:12:37,616 INFO L225 Difference]: With dead ends: 1636 [2022-01-18 12:12:37,616 INFO L226 Difference]: Without dead ends: 1585 [2022-01-18 12:12:37,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 111 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 911 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=676, Invalid=2746, Unknown=0, NotChecked=0, Total=3422 [2022-01-18 12:12:37,617 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 445 mSDsluCounter, 1753 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 1808 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:12:37,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [445 Valid, 1808 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 12:12:37,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2022-01-18 12:12:37,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 942. [2022-01-18 12:12:37,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 941 states have (on average 2.5770456960680126) internal successors, (2425), 941 states have internal predecessors, (2425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:12:37,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 2425 transitions. [2022-01-18 12:12:37,634 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 2425 transitions. Word has length 67 [2022-01-18 12:12:37,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:12:37,634 INFO L470 AbstractCegarLoop]: Abstraction has 942 states and 2425 transitions. [2022-01-18 12:12:37,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:12:37,634 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 2425 transitions. [2022-01-18 12:12:37,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:12:37,636 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:12:37,636 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:12:37,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-01-18 12:12:37,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-01-18 12:12:37,853 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:12:37,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:12:37,853 INFO L85 PathProgramCache]: Analyzing trace with hash -802204853, now seen corresponding path program 14 times [2022-01-18 12:12:37,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:12:37,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835095852] [2022-01-18 12:12:37,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:12:37,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:12:37,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:12:38,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:12:38,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:12:38,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835095852] [2022-01-18 12:12:38,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835095852] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:12:38,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634552787] [2022-01-18 12:12:38,015 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:12:38,015 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:12:38,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:12:38,016 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:12:38,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-01-18 12:12:38,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:12:38,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:12:38,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 12:12:38,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:12:38,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:12:38,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:12:39,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:12:39,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634552787] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:12:39,022 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:12:39,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 37 [2022-01-18 12:12:39,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63733314] [2022-01-18 12:12:39,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:12:39,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 12:12:39,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:12:39,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 12:12:39,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=1105, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 12:12:39,029 INFO L87 Difference]: Start difference. First operand 942 states and 2425 transitions. Second operand has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:12:39,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:12:39,701 INFO L93 Difference]: Finished difference Result 1412 states and 3554 transitions. [2022-01-18 12:12:39,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 12:12:39,701 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:12:39,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:12:39,713 INFO L225 Difference]: With dead ends: 1412 [2022-01-18 12:12:39,713 INFO L226 Difference]: Without dead ends: 1361 [2022-01-18 12:12:39,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 111 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 748 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=497, Invalid=2259, Unknown=0, NotChecked=0, Total=2756 [2022-01-18 12:12:39,715 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 332 mSDsluCounter, 1778 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 1797 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 12:12:39,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [332 Valid, 1797 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 12:12:39,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2022-01-18 12:12:39,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 942. [2022-01-18 12:12:39,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 941 states have (on average 2.5770456960680126) internal successors, (2425), 941 states have internal predecessors, (2425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:12:39,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 2425 transitions. [2022-01-18 12:12:39,737 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 2425 transitions. Word has length 67 [2022-01-18 12:12:39,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:12:39,737 INFO L470 AbstractCegarLoop]: Abstraction has 942 states and 2425 transitions. [2022-01-18 12:12:39,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:12:39,738 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 2425 transitions. [2022-01-18 12:12:39,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:12:39,740 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:12:39,740 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:12:39,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-01-18 12:12:39,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:12:39,946 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:12:39,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:12:39,947 INFO L85 PathProgramCache]: Analyzing trace with hash -731367441, now seen corresponding path program 15 times [2022-01-18 12:12:39,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:12:39,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755952299] [2022-01-18 12:12:39,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:12:39,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:12:39,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:12:40,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:12:40,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:12:40,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755952299] [2022-01-18 12:12:40,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755952299] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:12:40,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004885625] [2022-01-18 12:12:40,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:12:40,123 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:12:40,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:12:40,124 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:12:40,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-01-18 12:12:40,179 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 12:12:40,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:12:40,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 12:12:40,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:12:40,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:12:40,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:12:41,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:12:41,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004885625] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:12:41,071 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:12:41,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 37 [2022-01-18 12:12:41,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285507756] [2022-01-18 12:12:41,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:12:41,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 12:12:41,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:12:41,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 12:12:41,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1113, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 12:12:41,072 INFO L87 Difference]: Start difference. First operand 942 states and 2425 transitions. Second operand has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:12:41,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:12:41,903 INFO L93 Difference]: Finished difference Result 1468 states and 3692 transitions. [2022-01-18 12:12:41,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 12:12:41,903 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:12:41,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:12:41,906 INFO L225 Difference]: With dead ends: 1468 [2022-01-18 12:12:41,906 INFO L226 Difference]: Without dead ends: 1417 [2022-01-18 12:12:41,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 111 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 901 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=593, Invalid=2713, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 12:12:41,907 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 398 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 1784 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 12:12:41,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [398 Valid, 1784 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 12:12:41,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1417 states. [2022-01-18 12:12:41,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1417 to 942. [2022-01-18 12:12:41,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 941 states have (on average 2.5770456960680126) internal successors, (2425), 941 states have internal predecessors, (2425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:12:41,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 2425 transitions. [2022-01-18 12:12:41,922 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 2425 transitions. Word has length 67 [2022-01-18 12:12:41,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:12:41,922 INFO L470 AbstractCegarLoop]: Abstraction has 942 states and 2425 transitions. [2022-01-18 12:12:41,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:12:41,922 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 2425 transitions. [2022-01-18 12:12:41,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:12:41,923 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:12:41,924 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:12:41,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-01-18 12:12:42,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:12:42,140 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:12:42,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:12:42,140 INFO L85 PathProgramCache]: Analyzing trace with hash -2015011739, now seen corresponding path program 16 times [2022-01-18 12:12:42,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:12:42,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843864369] [2022-01-18 12:12:42,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:12:42,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:12:42,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:12:42,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:12:42,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:12:42,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843864369] [2022-01-18 12:12:42,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843864369] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:12:42,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177192259] [2022-01-18 12:12:42,318 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:12:42,319 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:12:42,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:12:42,319 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:12:42,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-01-18 12:12:42,362 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:12:42,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:12:42,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 12:12:42,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:12:42,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:12:42,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:12:43,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:12:43,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177192259] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:12:43,263 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:12:43,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 37 [2022-01-18 12:12:43,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085729105] [2022-01-18 12:12:43,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:12:43,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 12:12:43,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:12:43,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 12:12:43,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1106, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 12:12:43,265 INFO L87 Difference]: Start difference. First operand 942 states and 2425 transitions. Second operand has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:12:44,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:12:44,286 INFO L93 Difference]: Finished difference Result 1596 states and 3999 transitions. [2022-01-18 12:12:44,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 12:12:44,287 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:12:44,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:12:44,289 INFO L225 Difference]: With dead ends: 1596 [2022-01-18 12:12:44,289 INFO L226 Difference]: Without dead ends: 1545 [2022-01-18 12:12:44,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 111 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 983 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=672, Invalid=2868, Unknown=0, NotChecked=0, Total=3540 [2022-01-18 12:12:44,290 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 322 mSDsluCounter, 2417 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 2425 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:12:44,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 2425 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 12:12:44,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1545 states. [2022-01-18 12:12:44,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1545 to 942. [2022-01-18 12:12:44,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 941 states have (on average 2.5770456960680126) internal successors, (2425), 941 states have internal predecessors, (2425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:12:44,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 2425 transitions. [2022-01-18 12:12:44,313 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 2425 transitions. Word has length 67 [2022-01-18 12:12:44,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:12:44,313 INFO L470 AbstractCegarLoop]: Abstraction has 942 states and 2425 transitions. [2022-01-18 12:12:44,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:12:44,314 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 2425 transitions. [2022-01-18 12:12:44,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:12:44,315 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:12:44,315 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:12:44,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-01-18 12:12:44,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-01-18 12:12:44,532 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:12:44,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:12:44,532 INFO L85 PathProgramCache]: Analyzing trace with hash 636220915, now seen corresponding path program 17 times [2022-01-18 12:12:44,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:12:44,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740808483] [2022-01-18 12:12:44,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:12:44,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:12:44,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:12:44,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:12:44,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:12:44,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740808483] [2022-01-18 12:12:44,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740808483] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:12:44,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441148526] [2022-01-18 12:12:44,704 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:12:44,704 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:12:44,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:12:44,705 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:12:44,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-01-18 12:12:44,755 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:12:44,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:12:44,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 12:12:44,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:12:45,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:12:45,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:12:45,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:12:45,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441148526] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:12:45,648 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:12:45,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 37 [2022-01-18 12:12:45,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838171888] [2022-01-18 12:12:45,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:12:45,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 12:12:45,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:12:45,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 12:12:45,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1133, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 12:12:45,650 INFO L87 Difference]: Start difference. First operand 942 states and 2425 transitions. Second operand has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:12:47,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:12:47,386 INFO L93 Difference]: Finished difference Result 2221 states and 5537 transitions. [2022-01-18 12:12:47,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 12:12:47,387 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:12:47,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:12:47,390 INFO L225 Difference]: With dead ends: 2221 [2022-01-18 12:12:47,391 INFO L226 Difference]: Without dead ends: 2170 [2022-01-18 12:12:47,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 112 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1762 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1014, Invalid=5148, Unknown=0, NotChecked=0, Total=6162 [2022-01-18 12:12:47,391 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 563 mSDsluCounter, 3126 mSDsCounter, 0 mSdLazyCounter, 1418 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 3132 SdHoareTripleChecker+Invalid, 1459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:12:47,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [563 Valid, 3132 Invalid, 1459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1418 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:12:47,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2170 states. [2022-01-18 12:12:47,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2170 to 942. [2022-01-18 12:12:47,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 941 states have (on average 2.5770456960680126) internal successors, (2425), 941 states have internal predecessors, (2425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:12:47,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 2425 transitions. [2022-01-18 12:12:47,411 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 2425 transitions. Word has length 67 [2022-01-18 12:12:47,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:12:47,411 INFO L470 AbstractCegarLoop]: Abstraction has 942 states and 2425 transitions. [2022-01-18 12:12:47,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:12:47,411 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 2425 transitions. [2022-01-18 12:12:47,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:12:47,413 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:12:47,413 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:12:47,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-01-18 12:12:47,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:12:47,644 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:12:47,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:12:47,644 INFO L85 PathProgramCache]: Analyzing trace with hash 165029217, now seen corresponding path program 18 times [2022-01-18 12:12:47,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:12:47,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114928325] [2022-01-18 12:12:47,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:12:47,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:12:47,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:12:47,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:12:47,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:12:47,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114928325] [2022-01-18 12:12:47,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114928325] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:12:47,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560156773] [2022-01-18 12:12:47,826 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:12:47,827 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:12:47,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:12:47,828 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:12:47,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-01-18 12:12:47,876 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 12:12:47,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:12:47,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 12:12:47,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:12:48,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:12:48,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:12:48,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:12:48,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560156773] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:12:48,847 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:12:48,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 37 [2022-01-18 12:12:48,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376846424] [2022-01-18 12:12:48,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:12:48,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 12:12:48,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:12:48,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 12:12:48,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1138, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 12:12:48,849 INFO L87 Difference]: Start difference. First operand 942 states and 2425 transitions. Second operand has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:12:51,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:12:51,711 INFO L93 Difference]: Finished difference Result 2430 states and 6089 transitions. [2022-01-18 12:12:51,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-01-18 12:12:51,712 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:12:51,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:12:51,715 INFO L225 Difference]: With dead ends: 2430 [2022-01-18 12:12:51,715 INFO L226 Difference]: Without dead ends: 2379 [2022-01-18 12:12:51,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 111 SyntacticMatches, 2 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2981 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1551, Invalid=8349, Unknown=0, NotChecked=0, Total=9900 [2022-01-18 12:12:51,718 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 874 mSDsluCounter, 2542 mSDsCounter, 0 mSdLazyCounter, 1295 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 2581 SdHoareTripleChecker+Invalid, 1376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:12:51,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [874 Valid, 2581 Invalid, 1376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1295 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:12:51,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2379 states. [2022-01-18 12:12:51,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2379 to 942. [2022-01-18 12:12:51,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 941 states have (on average 2.5770456960680126) internal successors, (2425), 941 states have internal predecessors, (2425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:12:51,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 2425 transitions. [2022-01-18 12:12:51,742 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 2425 transitions. Word has length 67 [2022-01-18 12:12:51,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:12:51,742 INFO L470 AbstractCegarLoop]: Abstraction has 942 states and 2425 transitions. [2022-01-18 12:12:51,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:12:51,742 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 2425 transitions. [2022-01-18 12:12:51,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:12:51,743 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:12:51,744 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:12:51,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-01-18 12:12:51,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:12:51,950 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:12:51,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:12:51,951 INFO L85 PathProgramCache]: Analyzing trace with hash -136244459, now seen corresponding path program 19 times [2022-01-18 12:12:51,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:12:51,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895120469] [2022-01-18 12:12:51,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:12:51,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:12:51,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:12:52,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:12:52,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:12:52,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895120469] [2022-01-18 12:12:52,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895120469] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:12:52,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079222185] [2022-01-18 12:12:52,139 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:12:52,139 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:12:52,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:12:52,140 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:12:52,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-01-18 12:12:52,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:12:52,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 12:12:52,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:12:52,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:12:52,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:12:53,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:12:53,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079222185] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:12:53,104 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:12:53,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 37 [2022-01-18 12:12:53,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870248634] [2022-01-18 12:12:53,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:12:53,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 12:12:53,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:12:53,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 12:12:53,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1131, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 12:12:53,105 INFO L87 Difference]: Start difference. First operand 942 states and 2425 transitions. Second operand has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:12:57,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:12:57,224 INFO L93 Difference]: Finished difference Result 2784 states and 6986 transitions. [2022-01-18 12:12:57,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-01-18 12:12:57,224 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:12:57,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:12:57,228 INFO L225 Difference]: With dead ends: 2784 [2022-01-18 12:12:57,229 INFO L226 Difference]: Without dead ends: 2733 [2022-01-18 12:12:57,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 111 SyntacticMatches, 2 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5121 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2382, Invalid=12870, Unknown=0, NotChecked=0, Total=15252 [2022-01-18 12:12:57,230 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 1087 mSDsluCounter, 2858 mSDsCounter, 0 mSdLazyCounter, 1696 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 2884 SdHoareTripleChecker+Invalid, 1813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:12:57,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1087 Valid, 2884 Invalid, 1813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1696 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 12:12:57,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2733 states. [2022-01-18 12:12:57,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2733 to 942. [2022-01-18 12:12:57,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 941 states have (on average 2.5770456960680126) internal successors, (2425), 941 states have internal predecessors, (2425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:12:57,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 2425 transitions. [2022-01-18 12:12:57,251 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 2425 transitions. Word has length 67 [2022-01-18 12:12:57,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:12:57,251 INFO L470 AbstractCegarLoop]: Abstraction has 942 states and 2425 transitions. [2022-01-18 12:12:57,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:12:57,251 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 2425 transitions. [2022-01-18 12:12:57,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 12:12:57,252 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:12:57,253 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:12:57,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-01-18 12:12:57,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:12:57,469 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:12:57,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:12:57,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1297203849, now seen corresponding path program 20 times [2022-01-18 12:12:57,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:12:57,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930082221] [2022-01-18 12:12:57,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:12:57,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:12:57,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:12:57,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:12:57,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:12:57,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930082221] [2022-01-18 12:12:57,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930082221] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:12:57,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440869989] [2022-01-18 12:12:57,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:12:57,646 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:12:57,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:12:57,647 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:12:57,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-01-18 12:12:57,695 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:12:57,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:12:57,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 12:12:57,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:12:58,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:12:58,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:12:58,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:12:58,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440869989] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:12:58,652 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:12:58,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 37 [2022-01-18 12:12:58,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144176669] [2022-01-18 12:12:58,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:12:58,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 12:12:58,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:12:58,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 12:12:58,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1130, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 12:12:58,653 INFO L87 Difference]: Start difference. First operand 942 states and 2425 transitions. Second operand has 37 states, 37 states have (on average 3.5675675675675675) internal successors, (132), 37 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:01,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:01,239 INFO L93 Difference]: Finished difference Result 3254 states and 8236 transitions. [2022-01-18 12:13:01,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-18 12:13:01,239 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.5675675675675675) internal successors, (132), 37 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 12:13:01,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:01,244 INFO L225 Difference]: With dead ends: 3254 [2022-01-18 12:13:01,244 INFO L226 Difference]: Without dead ends: 3152 [2022-01-18 12:13:01,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 111 SyntacticMatches, 2 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3069 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1706, Invalid=7996, Unknown=0, NotChecked=0, Total=9702 [2022-01-18 12:13:01,245 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 982 mSDsluCounter, 2958 mSDsCounter, 0 mSdLazyCounter, 1600 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 982 SdHoareTripleChecker+Valid, 2943 SdHoareTripleChecker+Invalid, 1710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:01,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [982 Valid, 2943 Invalid, 1710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1600 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 12:13:01,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3152 states. [2022-01-18 12:13:01,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3152 to 947. [2022-01-18 12:13:01,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 947 states, 946 states have (on average 2.5940803382663846) internal successors, (2454), 946 states have internal predecessors, (2454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:01,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 2454 transitions. [2022-01-18 12:13:01,266 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 2454 transitions. Word has length 67 [2022-01-18 12:13:01,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:01,266 INFO L470 AbstractCegarLoop]: Abstraction has 947 states and 2454 transitions. [2022-01-18 12:13:01,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.5675675675675675) internal successors, (132), 37 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:01,266 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 2454 transitions. [2022-01-18 12:13:01,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:13:01,267 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:01,268 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:01,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-01-18 12:13:01,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-01-18 12:13:01,471 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:01,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:01,472 INFO L85 PathProgramCache]: Analyzing trace with hash -732732975, now seen corresponding path program 21 times [2022-01-18 12:13:01,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:01,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755436123] [2022-01-18 12:13:01,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:01,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:01,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:01,692 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:01,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:01,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755436123] [2022-01-18 12:13:01,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755436123] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:01,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317345196] [2022-01-18 12:13:01,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:13:01,692 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:01,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:01,693 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:01,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-01-18 12:13:01,748 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 12:13:01,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:13:01,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 12:13:01,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:02,331 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:02,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:02,959 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:02,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317345196] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:02,959 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:02,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-01-18 12:13:02,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381947459] [2022-01-18 12:13:02,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:02,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 12:13:02,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:02,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 12:13:02,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=1863, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 12:13:02,960 INFO L87 Difference]: Start difference. First operand 947 states and 2454 transitions. Second operand has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:04,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:04,561 INFO L93 Difference]: Finished difference Result 1871 states and 4699 transitions. [2022-01-18 12:13:04,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 12:13:04,561 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:13:04,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:04,563 INFO L225 Difference]: With dead ends: 1871 [2022-01-18 12:13:04,563 INFO L226 Difference]: Without dead ends: 1769 [2022-01-18 12:13:04,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1927 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=772, Invalid=6200, Unknown=0, NotChecked=0, Total=6972 [2022-01-18 12:13:04,565 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 1018 mSDsluCounter, 4095 mSDsCounter, 0 mSdLazyCounter, 1444 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1018 SdHoareTripleChecker+Valid, 4068 SdHoareTripleChecker+Invalid, 1498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:04,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1018 Valid, 4068 Invalid, 1498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1444 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:13:04,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1769 states. [2022-01-18 12:13:04,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1769 to 1047. [2022-01-18 12:13:04,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 1046 states have (on average 2.5822179732313577) internal successors, (2701), 1046 states have internal predecessors, (2701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:04,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 2701 transitions. [2022-01-18 12:13:04,580 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 2701 transitions. Word has length 72 [2022-01-18 12:13:04,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:04,580 INFO L470 AbstractCegarLoop]: Abstraction has 1047 states and 2701 transitions. [2022-01-18 12:13:04,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:04,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 2701 transitions. [2022-01-18 12:13:04,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:13:04,582 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:04,582 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:04,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-01-18 12:13:04,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-01-18 12:13:04,783 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:04,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:04,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1292597427, now seen corresponding path program 1 times [2022-01-18 12:13:04,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:04,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485149993] [2022-01-18 12:13:04,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:04,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:04,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:05,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:05,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:05,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485149993] [2022-01-18 12:13:05,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485149993] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:05,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534063353] [2022-01-18 12:13:05,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:05,019 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:05,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:05,020 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:05,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-01-18 12:13:05,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:05,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:13:05,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:05,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:05,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:05,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:05,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534063353] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:05,925 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:05,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:13:05,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037491919] [2022-01-18 12:13:05,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:05,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:13:05,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:05,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:13:05,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1214, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:13:05,926 INFO L87 Difference]: Start difference. First operand 1047 states and 2701 transitions. Second operand has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:06,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:06,703 INFO L93 Difference]: Finished difference Result 1712 states and 4362 transitions. [2022-01-18 12:13:06,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-18 12:13:06,703 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:13:06,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:06,706 INFO L225 Difference]: With dead ends: 1712 [2022-01-18 12:13:06,706 INFO L226 Difference]: Without dead ends: 1661 [2022-01-18 12:13:06,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 759 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=484, Invalid=2486, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 12:13:06,706 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 413 mSDsluCounter, 2632 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 2660 SdHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:06,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [413 Valid, 2660 Invalid, 1120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1087 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:13:06,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1661 states. [2022-01-18 12:13:06,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1661 to 1067. [2022-01-18 12:13:06,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1067 states, 1066 states have (on average 2.5891181988742966) internal successors, (2760), 1066 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:06,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 2760 transitions. [2022-01-18 12:13:06,721 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 2760 transitions. Word has length 72 [2022-01-18 12:13:06,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:06,722 INFO L470 AbstractCegarLoop]: Abstraction has 1067 states and 2760 transitions. [2022-01-18 12:13:06,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:06,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 2760 transitions. [2022-01-18 12:13:06,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:13:06,723 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:06,723 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:06,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-01-18 12:13:06,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-01-18 12:13:06,924 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:06,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:06,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1763789125, now seen corresponding path program 2 times [2022-01-18 12:13:06,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:06,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923000666] [2022-01-18 12:13:06,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:06,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:06,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:07,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:07,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:07,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923000666] [2022-01-18 12:13:07,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923000666] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:07,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971690009] [2022-01-18 12:13:07,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:13:07,144 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:07,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:07,145 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:07,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-01-18 12:13:07,209 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:13:07,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:13:07,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:13:07,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:07,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:07,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:08,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:08,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971690009] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:08,077 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:08,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:13:08,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310024699] [2022-01-18 12:13:08,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:08,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:13:08,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:08,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:13:08,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1228, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:13:08,079 INFO L87 Difference]: Start difference. First operand 1067 states and 2760 transitions. Second operand has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:09,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:09,479 INFO L93 Difference]: Finished difference Result 1852 states and 4719 transitions. [2022-01-18 12:13:09,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 12:13:09,479 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:13:09,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:09,482 INFO L225 Difference]: With dead ends: 1852 [2022-01-18 12:13:09,482 INFO L226 Difference]: Without dead ends: 1801 [2022-01-18 12:13:09,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1312 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=831, Invalid=4281, Unknown=0, NotChecked=0, Total=5112 [2022-01-18 12:13:09,483 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 531 mSDsluCounter, 2720 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 2772 SdHoareTripleChecker+Invalid, 1257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:09,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 2772 Invalid, 1257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:13:09,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1801 states. [2022-01-18 12:13:09,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1801 to 1083. [2022-01-18 12:13:09,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1083 states, 1082 states have (on average 2.5951940850277264) internal successors, (2808), 1082 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:09,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2808 transitions. [2022-01-18 12:13:09,498 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2808 transitions. Word has length 72 [2022-01-18 12:13:09,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:09,498 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 2808 transitions. [2022-01-18 12:13:09,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:09,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2808 transitions. [2022-01-18 12:13:09,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:13:09,499 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:09,499 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:09,517 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-01-18 12:13:09,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:09,703 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:09,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:09,703 INFO L85 PathProgramCache]: Analyzing trace with hash -2065062801, now seen corresponding path program 3 times [2022-01-18 12:13:09,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:09,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224045543] [2022-01-18 12:13:09,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:09,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:09,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:10,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:10,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:10,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224045543] [2022-01-18 12:13:10,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224045543] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:10,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828302594] [2022-01-18 12:13:10,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:13:10,030 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:10,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:10,031 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:10,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-01-18 12:13:10,087 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 12:13:10,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:13:10,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:13:10,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:10,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:10,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:10,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:10,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828302594] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:10,924 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:10,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:13:10,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131158760] [2022-01-18 12:13:10,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:10,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:13:10,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:10,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:13:10,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1204, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:13:10,925 INFO L87 Difference]: Start difference. First operand 1083 states and 2808 transitions. Second operand has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:12,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:12,793 INFO L93 Difference]: Finished difference Result 2113 states and 5314 transitions. [2022-01-18 12:13:12,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-18 12:13:12,794 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:13:12,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:12,797 INFO L225 Difference]: With dead ends: 2113 [2022-01-18 12:13:12,797 INFO L226 Difference]: Without dead ends: 2062 [2022-01-18 12:13:12,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2004 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1288, Invalid=5684, Unknown=0, NotChecked=0, Total=6972 [2022-01-18 12:13:12,798 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 726 mSDsluCounter, 3248 mSDsCounter, 0 mSdLazyCounter, 1488 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 3256 SdHoareTripleChecker+Invalid, 1557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:12,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [726 Valid, 3256 Invalid, 1557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1488 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:13:12,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2062 states. [2022-01-18 12:13:12,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2062 to 1099. [2022-01-18 12:13:12,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 1098 states have (on average 2.612021857923497) internal successors, (2868), 1098 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:12,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2868 transitions. [2022-01-18 12:13:12,816 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2868 transitions. Word has length 72 [2022-01-18 12:13:12,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:12,817 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2868 transitions. [2022-01-18 12:13:12,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:12,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2868 transitions. [2022-01-18 12:13:12,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:13:12,818 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:12,818 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:12,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-01-18 12:13:13,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:13,031 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:13,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:13,032 INFO L85 PathProgramCache]: Analyzing trace with hash -631614493, now seen corresponding path program 4 times [2022-01-18 12:13:13,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:13,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4418096] [2022-01-18 12:13:13,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:13,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:13,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:13,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:13,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:13,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4418096] [2022-01-18 12:13:13,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4418096] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:13,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697384480] [2022-01-18 12:13:13,254 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:13:13,254 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:13,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:13,255 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:13,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-01-18 12:13:13,306 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:13:13,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:13:13,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:13:13,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:13,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:13,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:14,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:14,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697384480] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:14,191 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:14,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:13:14,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978703769] [2022-01-18 12:13:14,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:14,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:13:14,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:14,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:13:14,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1202, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:13:14,193 INFO L87 Difference]: Start difference. First operand 1099 states and 2868 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:15,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:15,499 INFO L93 Difference]: Finished difference Result 1971 states and 5017 transitions. [2022-01-18 12:13:15,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 12:13:15,499 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:13:15,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:15,502 INFO L225 Difference]: With dead ends: 1971 [2022-01-18 12:13:15,502 INFO L226 Difference]: Without dead ends: 1890 [2022-01-18 12:13:15,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1075 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=738, Invalid=3422, Unknown=0, NotChecked=0, Total=4160 [2022-01-18 12:13:15,503 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 653 mSDsluCounter, 2892 mSDsCounter, 0 mSdLazyCounter, 1273 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 2951 SdHoareTripleChecker+Invalid, 1351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:15,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [653 Valid, 2951 Invalid, 1351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1273 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:13:15,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1890 states. [2022-01-18 12:13:15,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1890 to 1099. [2022-01-18 12:13:15,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 1098 states have (on average 2.604735883424408) internal successors, (2860), 1098 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:15,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2860 transitions. [2022-01-18 12:13:15,521 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2860 transitions. Word has length 72 [2022-01-18 12:13:15,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:15,521 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2860 transitions. [2022-01-18 12:13:15,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:15,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2860 transitions. [2022-01-18 12:13:15,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:13:15,523 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:15,523 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:15,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-01-18 12:13:15,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-01-18 12:13:15,739 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:15,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:15,740 INFO L85 PathProgramCache]: Analyzing trace with hash -961381265, now seen corresponding path program 5 times [2022-01-18 12:13:15,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:15,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306522494] [2022-01-18 12:13:15,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:15,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:15,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:15,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:15,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:15,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306522494] [2022-01-18 12:13:15,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306522494] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:15,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645539048] [2022-01-18 12:13:15,978 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:13:15,978 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:15,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:15,979 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:15,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-01-18 12:13:16,031 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 12:13:16,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:13:16,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:13:16,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:16,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:16,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:16,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:16,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645539048] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:16,866 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:16,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:13:16,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128469155] [2022-01-18 12:13:16,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:16,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:13:16,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:16,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:13:16,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1205, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:13:16,868 INFO L87 Difference]: Start difference. First operand 1099 states and 2860 transitions. Second operand has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:17,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:17,952 INFO L93 Difference]: Finished difference Result 1979 states and 5036 transitions. [2022-01-18 12:13:17,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-18 12:13:17,952 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:13:17,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:17,955 INFO L225 Difference]: With dead ends: 1979 [2022-01-18 12:13:17,955 INFO L226 Difference]: Without dead ends: 1928 [2022-01-18 12:13:17,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 910 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=657, Invalid=3003, Unknown=0, NotChecked=0, Total=3660 [2022-01-18 12:13:17,956 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 760 mSDsluCounter, 2370 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 2388 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:17,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [760 Valid, 2388 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1036 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:13:17,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1928 states. [2022-01-18 12:13:17,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1928 to 1127. [2022-01-18 12:13:17,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1126 states have (on average 2.6261101243339255) internal successors, (2957), 1126 states have internal predecessors, (2957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:17,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 2957 transitions. [2022-01-18 12:13:17,973 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 2957 transitions. Word has length 72 [2022-01-18 12:13:17,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:17,973 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 2957 transitions. [2022-01-18 12:13:17,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:17,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 2957 transitions. [2022-01-18 12:13:17,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:13:17,975 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:17,975 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:17,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-01-18 12:13:18,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-01-18 12:13:18,191 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:18,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:18,192 INFO L85 PathProgramCache]: Analyzing trace with hash 472067043, now seen corresponding path program 6 times [2022-01-18 12:13:18,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:18,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159144146] [2022-01-18 12:13:18,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:18,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:18,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:18,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:18,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:18,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159144146] [2022-01-18 12:13:18,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159144146] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:18,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861634988] [2022-01-18 12:13:18,412 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:13:18,412 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:18,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:18,413 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:18,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-01-18 12:13:18,468 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 12:13:18,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:13:18,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:13:18,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:18,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:18,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:19,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:19,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861634988] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:19,316 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:19,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:13:19,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398588509] [2022-01-18 12:13:19,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:19,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:13:19,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:19,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:13:19,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1223, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:13:19,317 INFO L87 Difference]: Start difference. First operand 1127 states and 2957 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:20,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:20,751 INFO L93 Difference]: Finished difference Result 2027 states and 5233 transitions. [2022-01-18 12:13:20,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 12:13:20,751 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:13:20,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:20,754 INFO L225 Difference]: With dead ends: 2027 [2022-01-18 12:13:20,754 INFO L226 Difference]: Without dead ends: 1901 [2022-01-18 12:13:20,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1279 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=832, Invalid=4138, Unknown=0, NotChecked=0, Total=4970 [2022-01-18 12:13:20,755 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 584 mSDsluCounter, 3264 mSDsCounter, 0 mSdLazyCounter, 1404 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 3284 SdHoareTripleChecker+Invalid, 1483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:20,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [584 Valid, 3284 Invalid, 1483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1404 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:13:20,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1901 states. [2022-01-18 12:13:20,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1901 to 1111. [2022-01-18 12:13:20,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 1110 states have (on average 2.606306306306306) internal successors, (2893), 1110 states have internal predecessors, (2893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:20,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 2893 transitions. [2022-01-18 12:13:20,771 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 2893 transitions. Word has length 72 [2022-01-18 12:13:20,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:20,771 INFO L470 AbstractCegarLoop]: Abstraction has 1111 states and 2893 transitions. [2022-01-18 12:13:20,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:20,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 2893 transitions. [2022-01-18 12:13:20,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:13:20,773 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:20,773 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:20,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-01-18 12:13:20,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:20,983 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:20,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:20,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1677388773, now seen corresponding path program 7 times [2022-01-18 12:13:20,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:20,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063041872] [2022-01-18 12:13:20,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:20,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:20,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:21,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:21,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:21,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063041872] [2022-01-18 12:13:21,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063041872] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:21,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540192760] [2022-01-18 12:13:21,233 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:13:21,234 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:21,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:21,234 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:21,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-01-18 12:13:21,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:21,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:13:21,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:21,715 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:21,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:22,132 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:22,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540192760] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:22,132 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:22,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:13:22,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955954993] [2022-01-18 12:13:22,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:22,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:13:22,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:22,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:13:22,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1215, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:13:22,134 INFO L87 Difference]: Start difference. First operand 1111 states and 2893 transitions. Second operand has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:23,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:23,458 INFO L93 Difference]: Finished difference Result 2109 states and 5327 transitions. [2022-01-18 12:13:23,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 12:13:23,458 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:13:23,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:23,461 INFO L225 Difference]: With dead ends: 2109 [2022-01-18 12:13:23,461 INFO L226 Difference]: Without dead ends: 2058 [2022-01-18 12:13:23,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 973 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=710, Invalid=3450, Unknown=0, NotChecked=0, Total=4160 [2022-01-18 12:13:23,462 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 711 mSDsluCounter, 2659 mSDsCounter, 0 mSdLazyCounter, 1236 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 2671 SdHoareTripleChecker+Invalid, 1314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:23,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [711 Valid, 2671 Invalid, 1314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1236 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:13:23,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2058 states. [2022-01-18 12:13:23,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2058 to 1139. [2022-01-18 12:13:23,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 2.6274165202108963) internal successors, (2990), 1138 states have internal predecessors, (2990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:23,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 2990 transitions. [2022-01-18 12:13:23,483 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 2990 transitions. Word has length 72 [2022-01-18 12:13:23,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:23,483 INFO L470 AbstractCegarLoop]: Abstraction has 1139 states and 2990 transitions. [2022-01-18 12:13:23,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:23,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 2990 transitions. [2022-01-18 12:13:23,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:13:23,484 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:23,484 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:23,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-01-18 12:13:23,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:23,685 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:23,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:23,685 INFO L85 PathProgramCache]: Analyzing trace with hash -243940465, now seen corresponding path program 8 times [2022-01-18 12:13:23,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:23,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69716357] [2022-01-18 12:13:23,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:23,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:23,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:23,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:23,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:23,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69716357] [2022-01-18 12:13:23,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69716357] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:23,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100616722] [2022-01-18 12:13:23,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:13:23,912 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:23,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:23,913 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:23,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-01-18 12:13:23,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:13:23,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:13:23,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:13:23,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:24,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:24,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:24,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:24,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100616722] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:24,832 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:24,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:13:24,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113713884] [2022-01-18 12:13:24,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:24,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:13:24,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:24,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:13:24,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1231, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:13:24,833 INFO L87 Difference]: Start difference. First operand 1139 states and 2990 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:26,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:26,415 INFO L93 Difference]: Finished difference Result 2161 states and 5535 transitions. [2022-01-18 12:13:26,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 12:13:26,415 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:13:26,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:26,418 INFO L225 Difference]: With dead ends: 2161 [2022-01-18 12:13:26,418 INFO L226 Difference]: Without dead ends: 2035 [2022-01-18 12:13:26,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1285 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=852, Invalid=4404, Unknown=0, NotChecked=0, Total=5256 [2022-01-18 12:13:26,419 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 653 mSDsluCounter, 3041 mSDsCounter, 0 mSdLazyCounter, 1310 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 3078 SdHoareTripleChecker+Invalid, 1398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:26,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [653 Valid, 3078 Invalid, 1398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1310 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:13:26,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2035 states. [2022-01-18 12:13:26,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2035 to 1111. [2022-01-18 12:13:26,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 1110 states have (on average 2.606306306306306) internal successors, (2893), 1110 states have internal predecessors, (2893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:26,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 2893 transitions. [2022-01-18 12:13:26,435 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 2893 transitions. Word has length 72 [2022-01-18 12:13:26,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:26,435 INFO L470 AbstractCegarLoop]: Abstraction has 1111 states and 2893 transitions. [2022-01-18 12:13:26,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:26,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 2893 transitions. [2022-01-18 12:13:26,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:13:26,437 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:26,437 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:26,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-01-18 12:13:26,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:26,637 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:26,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:26,637 INFO L85 PathProgramCache]: Analyzing trace with hash 474800259, now seen corresponding path program 9 times [2022-01-18 12:13:26,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:26,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471545245] [2022-01-18 12:13:26,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:26,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:26,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:26,853 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:26,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:26,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471545245] [2022-01-18 12:13:26,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471545245] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:26,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44585846] [2022-01-18 12:13:26,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:13:26,853 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:26,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:26,854 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:26,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-01-18 12:13:26,910 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 12:13:26,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:13:26,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:13:26,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:27,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:27,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:27,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:27,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44585846] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:27,764 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:27,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:13:27,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32266926] [2022-01-18 12:13:27,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:27,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:13:27,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:27,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:13:27,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1235, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:13:27,765 INFO L87 Difference]: Start difference. First operand 1111 states and 2893 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:29,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:29,173 INFO L93 Difference]: Finished difference Result 2074 states and 5310 transitions. [2022-01-18 12:13:29,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 12:13:29,173 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:13:29,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:29,176 INFO L225 Difference]: With dead ends: 2074 [2022-01-18 12:13:29,176 INFO L226 Difference]: Without dead ends: 1963 [2022-01-18 12:13:29,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1340 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=788, Invalid=4324, Unknown=0, NotChecked=0, Total=5112 [2022-01-18 12:13:29,177 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 702 mSDsluCounter, 2887 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 2908 SdHoareTripleChecker+Invalid, 1291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:29,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [702 Valid, 2908 Invalid, 1291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:13:29,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1963 states. [2022-01-18 12:13:29,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1963 to 1119. [2022-01-18 12:13:29,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1118 states have (on average 2.607334525939177) internal successors, (2915), 1118 states have internal predecessors, (2915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:29,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 2915 transitions. [2022-01-18 12:13:29,194 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 2915 transitions. Word has length 72 [2022-01-18 12:13:29,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:29,194 INFO L470 AbstractCegarLoop]: Abstraction has 1119 states and 2915 transitions. [2022-01-18 12:13:29,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:29,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 2915 transitions. [2022-01-18 12:13:29,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:13:29,196 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:29,196 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:29,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-01-18 12:13:29,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-01-18 12:13:29,396 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:29,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:29,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1144771997, now seen corresponding path program 10 times [2022-01-18 12:13:29,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:29,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87433457] [2022-01-18 12:13:29,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:29,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:29,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:29,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:29,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:29,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87433457] [2022-01-18 12:13:29,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87433457] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:29,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631273487] [2022-01-18 12:13:29,630 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:13:29,630 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:29,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:29,631 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:29,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-01-18 12:13:29,684 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:13:29,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:13:29,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:13:29,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:30,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:30,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:30,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:30,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631273487] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:30,538 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:30,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:13:30,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107096415] [2022-01-18 12:13:30,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:30,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:13:30,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:30,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:13:30,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1210, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:13:30,539 INFO L87 Difference]: Start difference. First operand 1119 states and 2915 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:32,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:32,237 INFO L93 Difference]: Finished difference Result 2138 states and 5507 transitions. [2022-01-18 12:13:32,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-18 12:13:32,238 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:13:32,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:32,241 INFO L225 Difference]: With dead ends: 2138 [2022-01-18 12:13:32,241 INFO L226 Difference]: Without dead ends: 2057 [2022-01-18 12:13:32,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1801 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1122, Invalid=5198, Unknown=0, NotChecked=0, Total=6320 [2022-01-18 12:13:32,242 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 732 mSDsluCounter, 2831 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 2873 SdHoareTripleChecker+Invalid, 1355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:32,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [732 Valid, 2873 Invalid, 1355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1284 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:13:32,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2057 states. [2022-01-18 12:13:32,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2057 to 1127. [2022-01-18 12:13:32,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1126 states have (on average 2.6119005328596803) internal successors, (2941), 1126 states have internal predecessors, (2941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:32,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 2941 transitions. [2022-01-18 12:13:32,259 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 2941 transitions. Word has length 72 [2022-01-18 12:13:32,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:32,259 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 2941 transitions. [2022-01-18 12:13:32,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:32,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 2941 transitions. [2022-01-18 12:13:32,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:13:32,261 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:32,261 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:32,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-01-18 12:13:32,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-01-18 12:13:32,462 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:32,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:32,462 INFO L85 PathProgramCache]: Analyzing trace with hash 2123309453, now seen corresponding path program 11 times [2022-01-18 12:13:32,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:32,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149502542] [2022-01-18 12:13:32,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:32,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:32,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:32,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:32,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:32,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149502542] [2022-01-18 12:13:32,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149502542] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:32,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804344096] [2022-01-18 12:13:32,701 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:13:32,701 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:32,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:32,702 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:32,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-01-18 12:13:32,756 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 12:13:32,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:13:32,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:13:32,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:33,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:33,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:33,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:33,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804344096] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:33,619 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:33,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:13:33,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526391789] [2022-01-18 12:13:33,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:33,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:13:33,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:33,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:13:33,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1202, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:13:33,620 INFO L87 Difference]: Start difference. First operand 1127 states and 2941 transitions. Second operand has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:34,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:34,708 INFO L93 Difference]: Finished difference Result 1872 states and 4802 transitions. [2022-01-18 12:13:34,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 12:13:34,708 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:13:34,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:34,711 INFO L225 Difference]: With dead ends: 1872 [2022-01-18 12:13:34,711 INFO L226 Difference]: Without dead ends: 1821 [2022-01-18 12:13:34,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 978 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=683, Invalid=3223, Unknown=0, NotChecked=0, Total=3906 [2022-01-18 12:13:34,712 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 631 mSDsluCounter, 2130 mSDsCounter, 0 mSdLazyCounter, 1019 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 2188 SdHoareTripleChecker+Invalid, 1074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:34,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [631 Valid, 2188 Invalid, 1074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1019 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:13:34,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1821 states. [2022-01-18 12:13:34,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1821 to 1115. [2022-01-18 12:13:34,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 2.606822262118492) internal successors, (2904), 1114 states have internal predecessors, (2904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:34,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 2904 transitions. [2022-01-18 12:13:34,727 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 2904 transitions. Word has length 72 [2022-01-18 12:13:34,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:34,727 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 2904 transitions. [2022-01-18 12:13:34,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:34,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 2904 transitions. [2022-01-18 12:13:34,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:13:34,729 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:34,729 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:34,744 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-01-18 12:13:34,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-01-18 12:13:34,936 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:34,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:34,936 INFO L85 PathProgramCache]: Analyzing trace with hash -407016299, now seen corresponding path program 12 times [2022-01-18 12:13:34,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:34,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116520399] [2022-01-18 12:13:34,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:34,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:34,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:35,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:35,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:35,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116520399] [2022-01-18 12:13:35,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116520399] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:35,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200367251] [2022-01-18 12:13:35,170 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:13:35,170 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:35,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:35,171 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:35,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-01-18 12:13:35,227 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 12:13:35,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:13:35,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:13:35,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:35,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:35,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:36,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:36,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200367251] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:36,116 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:36,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:13:36,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828690240] [2022-01-18 12:13:36,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:36,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:13:36,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:36,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:13:36,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1245, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:13:36,124 INFO L87 Difference]: Start difference. First operand 1115 states and 2904 transitions. Second operand has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:37,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:37,346 INFO L93 Difference]: Finished difference Result 1935 states and 4969 transitions. [2022-01-18 12:13:37,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 12:13:37,346 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:13:37,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:37,349 INFO L225 Difference]: With dead ends: 1935 [2022-01-18 12:13:37,349 INFO L226 Difference]: Without dead ends: 1884 [2022-01-18 12:13:37,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1031 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=599, Invalid=3823, Unknown=0, NotChecked=0, Total=4422 [2022-01-18 12:13:37,350 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 526 mSDsluCounter, 2340 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 2388 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:37,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [526 Valid, 2388 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:13:37,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1884 states. [2022-01-18 12:13:37,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1884 to 1135. [2022-01-18 12:13:37,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1134 states have (on average 2.612874779541446) internal successors, (2963), 1134 states have internal predecessors, (2963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:37,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 2963 transitions. [2022-01-18 12:13:37,365 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 2963 transitions. Word has length 72 [2022-01-18 12:13:37,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:37,365 INFO L470 AbstractCegarLoop]: Abstraction has 1135 states and 2963 transitions. [2022-01-18 12:13:37,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:37,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 2963 transitions. [2022-01-18 12:13:37,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:13:37,367 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:37,367 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:37,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-01-18 12:13:37,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-01-18 12:13:37,567 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:37,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:37,568 INFO L85 PathProgramCache]: Analyzing trace with hash -708289975, now seen corresponding path program 13 times [2022-01-18 12:13:37,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:37,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125940411] [2022-01-18 12:13:37,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:37,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:37,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:37,792 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:37,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:37,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125940411] [2022-01-18 12:13:37,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125940411] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:37,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148030873] [2022-01-18 12:13:37,793 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:13:37,793 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:37,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:37,795 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:37,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-01-18 12:13:37,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:37,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:13:37,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:38,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:38,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:38,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:38,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148030873] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:38,761 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:38,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:13:38,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378124143] [2022-01-18 12:13:38,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:38,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:13:38,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:38,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:13:38,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1238, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:13:38,762 INFO L87 Difference]: Start difference. First operand 1135 states and 2963 transitions. Second operand has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:40,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:40,560 INFO L93 Difference]: Finished difference Result 2213 states and 5601 transitions. [2022-01-18 12:13:40,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-18 12:13:40,561 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:13:40,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:40,564 INFO L225 Difference]: With dead ends: 2213 [2022-01-18 12:13:40,564 INFO L226 Difference]: Without dead ends: 2162 [2022-01-18 12:13:40,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1630 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=982, Invalid=5338, Unknown=0, NotChecked=0, Total=6320 [2022-01-18 12:13:40,565 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 729 mSDsluCounter, 2982 mSDsCounter, 0 mSdLazyCounter, 1402 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 3003 SdHoareTripleChecker+Invalid, 1492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:40,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [729 Valid, 3003 Invalid, 1492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1402 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:13:40,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2162 states. [2022-01-18 12:13:40,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2162 to 1163. [2022-01-18 12:13:40,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 1162 states have (on average 2.629948364888124) internal successors, (3056), 1162 states have internal predecessors, (3056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:40,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 3056 transitions. [2022-01-18 12:13:40,582 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 3056 transitions. Word has length 72 [2022-01-18 12:13:40,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:40,583 INFO L470 AbstractCegarLoop]: Abstraction has 1163 states and 3056 transitions. [2022-01-18 12:13:40,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:40,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 3056 transitions. [2022-01-18 12:13:40,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:13:40,584 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:40,584 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:40,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-01-18 12:13:40,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:40,785 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:40,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:40,785 INFO L85 PathProgramCache]: Analyzing trace with hash 725158333, now seen corresponding path program 14 times [2022-01-18 12:13:40,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:40,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306651966] [2022-01-18 12:13:40,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:40,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:40,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:41,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:41,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:41,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306651966] [2022-01-18 12:13:41,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306651966] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:41,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851250409] [2022-01-18 12:13:41,012 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:13:41,012 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:41,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:41,013 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:41,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-01-18 12:13:41,071 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:13:41,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:13:41,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:13:41,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:41,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:41,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:41,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:41,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851250409] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:41,915 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:41,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:13:41,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119922924] [2022-01-18 12:13:41,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:41,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:13:41,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:41,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:13:41,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1231, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:13:41,918 INFO L87 Difference]: Start difference. First operand 1163 states and 3056 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:43,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:43,317 INFO L93 Difference]: Finished difference Result 2099 states and 5377 transitions. [2022-01-18 12:13:43,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 12:13:43,318 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:13:43,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:43,320 INFO L225 Difference]: With dead ends: 2099 [2022-01-18 12:13:43,320 INFO L226 Difference]: Without dead ends: 2018 [2022-01-18 12:13:43,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1166 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=694, Invalid=3998, Unknown=0, NotChecked=0, Total=4692 [2022-01-18 12:13:43,321 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 612 mSDsluCounter, 2651 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 2694 SdHoareTripleChecker+Invalid, 1247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:43,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [612 Valid, 2694 Invalid, 1247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:13:43,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2018 states. [2022-01-18 12:13:43,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2018 to 1139. [2022-01-18 12:13:43,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 2.609841827768014) internal successors, (2970), 1138 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:43,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 2970 transitions. [2022-01-18 12:13:43,338 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 2970 transitions. Word has length 72 [2022-01-18 12:13:43,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:43,338 INFO L470 AbstractCegarLoop]: Abstraction has 1139 states and 2970 transitions. [2022-01-18 12:13:43,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:43,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 2970 transitions. [2022-01-18 12:13:43,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:13:43,339 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:43,339 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:43,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-01-18 12:13:43,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-01-18 12:13:43,540 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:43,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:43,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1770743811, now seen corresponding path program 15 times [2022-01-18 12:13:43,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:43,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070147444] [2022-01-18 12:13:43,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:43,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:43,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:43,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:43,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:43,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070147444] [2022-01-18 12:13:43,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070147444] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:43,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295740883] [2022-01-18 12:13:43,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:13:43,744 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:43,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:43,745 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:43,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-01-18 12:13:43,802 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 12:13:43,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:13:43,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:13:43,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:44,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:44,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:44,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:44,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295740883] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:44,658 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:44,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:13:44,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842257540] [2022-01-18 12:13:44,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:44,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:13:44,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:44,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:13:44,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1255, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:13:44,659 INFO L87 Difference]: Start difference. First operand 1139 states and 2970 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:46,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:46,136 INFO L93 Difference]: Finished difference Result 2052 states and 5250 transitions. [2022-01-18 12:13:46,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 12:13:46,136 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:13:46,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:46,139 INFO L225 Difference]: With dead ends: 2052 [2022-01-18 12:13:46,139 INFO L226 Difference]: Without dead ends: 1956 [2022-01-18 12:13:46,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1159 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=617, Invalid=4353, Unknown=0, NotChecked=0, Total=4970 [2022-01-18 12:13:46,143 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 532 mSDsluCounter, 3464 mSDsCounter, 0 mSdLazyCounter, 1409 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 3460 SdHoareTripleChecker+Invalid, 1461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:46,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [532 Valid, 3460 Invalid, 1461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1409 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:13:46,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1956 states. [2022-01-18 12:13:46,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1956 to 1147. [2022-01-18 12:13:46,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 1146 states have (on average 2.6108202443280977) internal successors, (2992), 1146 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:46,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 2992 transitions. [2022-01-18 12:13:46,160 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 2992 transitions. Word has length 72 [2022-01-18 12:13:46,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:46,160 INFO L470 AbstractCegarLoop]: Abstraction has 1147 states and 2992 transitions. [2022-01-18 12:13:46,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:46,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 2992 transitions. [2022-01-18 12:13:46,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:13:46,162 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:46,162 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:46,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-01-18 12:13:46,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:46,362 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:46,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:46,362 INFO L85 PathProgramCache]: Analyzing trace with hash 904651229, now seen corresponding path program 16 times [2022-01-18 12:13:46,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:46,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002639503] [2022-01-18 12:13:46,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:46,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:46,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:46,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:46,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:46,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002639503] [2022-01-18 12:13:46,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002639503] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:46,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56821730] [2022-01-18 12:13:46,607 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:13:46,607 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:46,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:46,608 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:46,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-01-18 12:13:46,688 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:13:46,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:13:46,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:13:46,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:47,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:47,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:47,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:47,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56821730] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:47,531 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:47,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:13:47,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848957569] [2022-01-18 12:13:47,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:47,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:13:47,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:47,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:13:47,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1245, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:13:47,532 INFO L87 Difference]: Start difference. First operand 1147 states and 2992 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:49,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:49,269 INFO L93 Difference]: Finished difference Result 2310 states and 5913 transitions. [2022-01-18 12:13:49,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 12:13:49,269 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:13:49,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:49,272 INFO L225 Difference]: With dead ends: 2310 [2022-01-18 12:13:49,272 INFO L226 Difference]: Without dead ends: 2184 [2022-01-18 12:13:49,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1411 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=860, Invalid=4992, Unknown=0, NotChecked=0, Total=5852 [2022-01-18 12:13:49,273 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 767 mSDsluCounter, 3517 mSDsCounter, 0 mSdLazyCounter, 1570 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 3528 SdHoareTripleChecker+Invalid, 1652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:49,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [767 Valid, 3528 Invalid, 1652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1570 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 12:13:49,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2184 states. [2022-01-18 12:13:49,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2184 to 1151. [2022-01-18 12:13:49,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 1150 states have (on average 2.614782608695652) internal successors, (3007), 1150 states have internal predecessors, (3007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:49,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 3007 transitions. [2022-01-18 12:13:49,298 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 3007 transitions. Word has length 72 [2022-01-18 12:13:49,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:49,298 INFO L470 AbstractCegarLoop]: Abstraction has 1151 states and 3007 transitions. [2022-01-18 12:13:49,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:49,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 3007 transitions. [2022-01-18 12:13:49,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:13:49,299 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:49,299 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:49,316 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-01-18 12:13:49,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:49,500 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:49,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:49,501 INFO L85 PathProgramCache]: Analyzing trace with hash -122234617, now seen corresponding path program 17 times [2022-01-18 12:13:49,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:49,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758277880] [2022-01-18 12:13:49,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:49,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:49,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:49,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:49,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:49,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758277880] [2022-01-18 12:13:49,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758277880] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:49,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282600688] [2022-01-18 12:13:49,746 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:13:49,746 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:49,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:49,747 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:49,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-01-18 12:13:49,809 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 12:13:49,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:13:49,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:13:49,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:50,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:50,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:50,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:50,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282600688] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:50,673 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:50,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:13:50,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473302723] [2022-01-18 12:13:50,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:50,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:13:50,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:50,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:13:50,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1232, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:13:50,674 INFO L87 Difference]: Start difference. First operand 1151 states and 3007 transitions. Second operand has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:51,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:51,853 INFO L93 Difference]: Finished difference Result 2015 states and 5147 transitions. [2022-01-18 12:13:51,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 12:13:51,853 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:13:51,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:51,856 INFO L225 Difference]: With dead ends: 2015 [2022-01-18 12:13:51,856 INFO L226 Difference]: Without dead ends: 1964 [2022-01-18 12:13:51,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 921 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=590, Invalid=3442, Unknown=0, NotChecked=0, Total=4032 [2022-01-18 12:13:51,857 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 559 mSDsluCounter, 2467 mSDsCounter, 0 mSdLazyCounter, 1194 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 2504 SdHoareTripleChecker+Invalid, 1273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:51,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [559 Valid, 2504 Invalid, 1273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1194 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:13:51,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1964 states. [2022-01-18 12:13:51,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1964 to 1131. [2022-01-18 12:13:51,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 1130 states have (on average 2.6088495575221238) internal successors, (2948), 1130 states have internal predecessors, (2948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:51,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 2948 transitions. [2022-01-18 12:13:51,881 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 2948 transitions. Word has length 72 [2022-01-18 12:13:51,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:51,881 INFO L470 AbstractCegarLoop]: Abstraction has 1131 states and 2948 transitions. [2022-01-18 12:13:51,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:51,882 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 2948 transitions. [2022-01-18 12:13:51,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:13:51,883 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:51,883 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:51,899 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2022-01-18 12:13:52,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-01-18 12:13:52,084 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:52,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:52,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1615670163, now seen corresponding path program 18 times [2022-01-18 12:13:52,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:52,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426743196] [2022-01-18 12:13:52,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:52,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:52,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:52,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:52,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:52,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426743196] [2022-01-18 12:13:52,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426743196] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:52,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91874457] [2022-01-18 12:13:52,282 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:13:52,282 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:52,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:52,283 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:52,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-01-18 12:13:52,341 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 12:13:52,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:13:52,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:13:52,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:52,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:52,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:53,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:53,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91874457] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:53,192 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:53,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:13:53,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611878484] [2022-01-18 12:13:53,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:53,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:13:53,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:53,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:13:53,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1250, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:13:53,193 INFO L87 Difference]: Start difference. First operand 1131 states and 2948 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:54,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:54,838 INFO L93 Difference]: Finished difference Result 2197 states and 5638 transitions. [2022-01-18 12:13:54,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-18 12:13:54,838 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:13:54,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:54,841 INFO L225 Difference]: With dead ends: 2197 [2022-01-18 12:13:54,841 INFO L226 Difference]: Without dead ends: 2086 [2022-01-18 12:13:54,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1701 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=904, Invalid=5576, Unknown=0, NotChecked=0, Total=6480 [2022-01-18 12:13:54,841 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 681 mSDsluCounter, 2955 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 2988 SdHoareTripleChecker+Invalid, 1308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:54,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [681 Valid, 2988 Invalid, 1308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1239 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:13:54,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2086 states. [2022-01-18 12:13:54,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2086 to 1139. [2022-01-18 12:13:54,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 2.609841827768014) internal successors, (2970), 1138 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:54,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 2970 transitions. [2022-01-18 12:13:54,857 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 2970 transitions. Word has length 72 [2022-01-18 12:13:54,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:54,857 INFO L470 AbstractCegarLoop]: Abstraction has 1139 states and 2970 transitions. [2022-01-18 12:13:54,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:54,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 2970 transitions. [2022-01-18 12:13:54,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:13:54,859 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:54,859 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:54,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-01-18 12:13:55,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-01-18 12:13:55,060 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:55,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:55,060 INFO L85 PathProgramCache]: Analyzing trace with hash -3902093, now seen corresponding path program 19 times [2022-01-18 12:13:55,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:55,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88721890] [2022-01-18 12:13:55,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:55,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:55,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:55,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:55,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:55,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88721890] [2022-01-18 12:13:55,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88721890] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:55,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255882458] [2022-01-18 12:13:55,271 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:13:55,271 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:55,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:55,280 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:55,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-01-18 12:13:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:55,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:13:55,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:55,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:55,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:56,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:56,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255882458] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:56,188 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:56,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:13:56,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275449632] [2022-01-18 12:13:56,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:56,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:13:56,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:56,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:13:56,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1230, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:13:56,189 INFO L87 Difference]: Start difference. First operand 1139 states and 2970 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:58,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:13:58,029 INFO L93 Difference]: Finished difference Result 2225 states and 5748 transitions. [2022-01-18 12:13:58,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-18 12:13:58,029 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:13:58,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:13:58,032 INFO L225 Difference]: With dead ends: 2225 [2022-01-18 12:13:58,033 INFO L226 Difference]: Without dead ends: 2144 [2022-01-18 12:13:58,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2113 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1205, Invalid=6277, Unknown=0, NotChecked=0, Total=7482 [2022-01-18 12:13:58,033 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 717 mSDsluCounter, 2927 mSDsCounter, 0 mSdLazyCounter, 1388 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 2965 SdHoareTripleChecker+Invalid, 1474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:13:58,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [717 Valid, 2965 Invalid, 1474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1388 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:13:58,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2144 states. [2022-01-18 12:13:58,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2144 to 1147. [2022-01-18 12:13:58,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 1146 states have (on average 2.614310645724258) internal successors, (2996), 1146 states have internal predecessors, (2996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:58,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 2996 transitions. [2022-01-18 12:13:58,051 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 2996 transitions. Word has length 72 [2022-01-18 12:13:58,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:13:58,051 INFO L470 AbstractCegarLoop]: Abstraction has 1147 states and 2996 transitions. [2022-01-18 12:13:58,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:13:58,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 2996 transitions. [2022-01-18 12:13:58,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:13:58,052 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:13:58,053 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:13:58,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-01-18 12:13:58,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-01-18 12:13:58,268 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:13:58,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:13:58,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1030787939, now seen corresponding path program 20 times [2022-01-18 12:13:58,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:13:58,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738459927] [2022-01-18 12:13:58,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:13:58,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:13:58,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:13:58,464 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:58,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:13:58,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738459927] [2022-01-18 12:13:58,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738459927] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:13:58,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183088788] [2022-01-18 12:13:58,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:13:58,465 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:13:58,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:13:58,466 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:13:58,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-01-18 12:13:58,526 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:13:58,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:13:58,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:13:58,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:13:58,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:58,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:13:59,372 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:13:59,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183088788] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:13:59,373 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:13:59,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:13:59,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641685135] [2022-01-18 12:13:59,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:13:59,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:13:59,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:13:59,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:13:59,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1223, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:13:59,375 INFO L87 Difference]: Start difference. First operand 1147 states and 2996 transitions. Second operand has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:00,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:00,805 INFO L93 Difference]: Finished difference Result 1995 states and 5130 transitions. [2022-01-18 12:14:00,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 12:14:00,806 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:14:00,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:00,808 INFO L225 Difference]: With dead ends: 1995 [2022-01-18 12:14:00,808 INFO L226 Difference]: Without dead ends: 1944 [2022-01-18 12:14:00,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1258 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=792, Invalid=4320, Unknown=0, NotChecked=0, Total=5112 [2022-01-18 12:14:00,809 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 533 mSDsluCounter, 2823 mSDsCounter, 0 mSdLazyCounter, 1331 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 2865 SdHoareTripleChecker+Invalid, 1393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:00,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [533 Valid, 2865 Invalid, 1393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1331 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:14:00,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1944 states. [2022-01-18 12:14:00,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1944 to 1123. [2022-01-18 12:14:00,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 2.607843137254902) internal successors, (2926), 1122 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:00,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 2926 transitions. [2022-01-18 12:14:00,825 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 2926 transitions. Word has length 72 [2022-01-18 12:14:00,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:00,825 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 2926 transitions. [2022-01-18 12:14:00,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:00,825 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 2926 transitions. [2022-01-18 12:14:00,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:14:00,827 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:00,827 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:00,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-01-18 12:14:01,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-01-18 12:14:01,027 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:01,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:01,028 INFO L85 PathProgramCache]: Analyzing trace with hash 924694273, now seen corresponding path program 21 times [2022-01-18 12:14:01,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:01,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566950859] [2022-01-18 12:14:01,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:01,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:01,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:01,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:01,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:01,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566950859] [2022-01-18 12:14:01,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566950859] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:01,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188457222] [2022-01-18 12:14:01,220 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:14:01,220 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:01,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:01,221 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:14:01,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-01-18 12:14:01,281 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 12:14:01,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:14:01,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:14:01,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:01,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:01,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:02,156 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:02,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188457222] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:02,156 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:02,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:14:02,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347472711] [2022-01-18 12:14:02,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:02,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:14:02,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:02,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:14:02,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1241, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:14:02,157 INFO L87 Difference]: Start difference. First operand 1123 states and 2926 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:04,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:04,724 INFO L93 Difference]: Finished difference Result 2728 states and 6932 transitions. [2022-01-18 12:14:04,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-01-18 12:14:04,724 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:14:04,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:04,728 INFO L225 Difference]: With dead ends: 2728 [2022-01-18 12:14:04,728 INFO L226 Difference]: Without dead ends: 2566 [2022-01-18 12:14:04,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3288 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1241, Invalid=9265, Unknown=0, NotChecked=0, Total=10506 [2022-01-18 12:14:04,729 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 964 mSDsluCounter, 3961 mSDsCounter, 0 mSdLazyCounter, 1786 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 964 SdHoareTripleChecker+Valid, 3948 SdHoareTripleChecker+Invalid, 1887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:04,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [964 Valid, 3948 Invalid, 1887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1786 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 12:14:04,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2566 states. [2022-01-18 12:14:04,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2566 to 1201. [2022-01-18 12:14:04,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 1200 states have (on average 2.62) internal successors, (3144), 1200 states have internal predecessors, (3144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:04,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 3144 transitions. [2022-01-18 12:14:04,748 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 3144 transitions. Word has length 72 [2022-01-18 12:14:04,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:04,748 INFO L470 AbstractCegarLoop]: Abstraction has 1201 states and 3144 transitions. [2022-01-18 12:14:04,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:04,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 3144 transitions. [2022-01-18 12:14:04,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:14:04,750 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:04,750 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:04,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-01-18 12:14:04,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:04,950 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:04,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:04,950 INFO L85 PathProgramCache]: Analyzing trace with hash -694877983, now seen corresponding path program 22 times [2022-01-18 12:14:04,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:04,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930095901] [2022-01-18 12:14:04,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:04,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:04,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:05,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:05,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:05,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930095901] [2022-01-18 12:14:05,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930095901] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:05,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855711359] [2022-01-18 12:14:05,140 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:14:05,141 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:05,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:05,142 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:14:05,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-01-18 12:14:05,198 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:14:05,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:14:05,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:14:05,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:05,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:05,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:06,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:06,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855711359] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:06,040 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:06,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:14:06,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128110626] [2022-01-18 12:14:06,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:06,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:14:06,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:06,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:14:06,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1218, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:14:06,041 INFO L87 Difference]: Start difference. First operand 1201 states and 3144 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:08,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:08,969 INFO L93 Difference]: Finished difference Result 3002 states and 7626 transitions. [2022-01-18 12:14:08,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-01-18 12:14:08,969 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:14:08,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:08,973 INFO L225 Difference]: With dead ends: 3002 [2022-01-18 12:14:08,973 INFO L226 Difference]: Without dead ends: 2870 [2022-01-18 12:14:08,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3893 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1626, Invalid=10364, Unknown=0, NotChecked=0, Total=11990 [2022-01-18 12:14:08,974 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 1326 mSDsluCounter, 2960 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1326 SdHoareTripleChecker+Valid, 2975 SdHoareTripleChecker+Invalid, 1514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:08,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1326 Valid, 2975 Invalid, 1514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1398 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:14:08,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2870 states. [2022-01-18 12:14:08,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2870 to 1217. [2022-01-18 12:14:08,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 1216 states have (on average 2.6282894736842106) internal successors, (3196), 1216 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:08,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 3196 transitions. [2022-01-18 12:14:08,995 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 3196 transitions. Word has length 72 [2022-01-18 12:14:08,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:08,995 INFO L470 AbstractCegarLoop]: Abstraction has 1217 states and 3196 transitions. [2022-01-18 12:14:08,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:08,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 3196 transitions. [2022-01-18 12:14:08,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:14:08,997 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:08,997 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:09,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-01-18 12:14:09,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-01-18 12:14:09,205 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:09,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:09,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1721763829, now seen corresponding path program 23 times [2022-01-18 12:14:09,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:09,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001740605] [2022-01-18 12:14:09,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:09,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:09,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:09,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:09,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:09,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001740605] [2022-01-18 12:14:09,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001740605] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:09,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923798416] [2022-01-18 12:14:09,407 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:14:09,408 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:09,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:09,408 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:14:09,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-01-18 12:14:09,469 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 12:14:09,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:14:09,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:14:09,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:09,880 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:09,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:10,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:10,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923798416] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:10,295 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:10,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:14:10,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774296442] [2022-01-18 12:14:10,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:10,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:14:10,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:10,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:14:10,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1205, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:14:10,296 INFO L87 Difference]: Start difference. First operand 1217 states and 3196 transitions. Second operand has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:12,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:12,268 INFO L93 Difference]: Finished difference Result 2780 states and 7141 transitions. [2022-01-18 12:14:12,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-01-18 12:14:12,268 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:14:12,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:12,272 INFO L225 Difference]: With dead ends: 2780 [2022-01-18 12:14:12,272 INFO L226 Difference]: Without dead ends: 2678 [2022-01-18 12:14:12,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2151 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1112, Invalid=6198, Unknown=0, NotChecked=0, Total=7310 [2022-01-18 12:14:12,273 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 1003 mSDsluCounter, 2985 mSDsCounter, 0 mSdLazyCounter, 1369 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1003 SdHoareTripleChecker+Valid, 2960 SdHoareTripleChecker+Invalid, 1459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:12,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1003 Valid, 2960 Invalid, 1459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1369 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:14:12,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2678 states. [2022-01-18 12:14:12,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2678 to 1201. [2022-01-18 12:14:12,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 1200 states have (on average 2.6233333333333335) internal successors, (3148), 1200 states have internal predecessors, (3148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:12,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 3148 transitions. [2022-01-18 12:14:12,292 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 3148 transitions. Word has length 72 [2022-01-18 12:14:12,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:12,292 INFO L470 AbstractCegarLoop]: Abstraction has 1201 states and 3148 transitions. [2022-01-18 12:14:12,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:12,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 3148 transitions. [2022-01-18 12:14:12,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:14:12,294 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:12,294 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:12,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-01-18 12:14:12,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:12,495 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:12,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:12,495 INFO L85 PathProgramCache]: Analyzing trace with hash -610475651, now seen corresponding path program 24 times [2022-01-18 12:14:12,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:12,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72410436] [2022-01-18 12:14:12,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:12,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:12,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:12,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:12,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:12,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72410436] [2022-01-18 12:14:12,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72410436] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:12,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498298773] [2022-01-18 12:14:12,676 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:14:12,676 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:12,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:12,678 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:14:12,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-01-18 12:14:12,738 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 12:14:12,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:14:12,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 12:14:12,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:13,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:13,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:13,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:13,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498298773] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:13,684 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:13,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 41 [2022-01-18 12:14:13,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199822466] [2022-01-18 12:14:13,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:13,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 12:14:13,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:13,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 12:14:13,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=1382, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 12:14:13,685 INFO L87 Difference]: Start difference. First operand 1201 states and 3148 transitions. Second operand has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:14,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:14,594 INFO L93 Difference]: Finished difference Result 2142 states and 5492 transitions. [2022-01-18 12:14:14,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 12:14:14,595 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:14:14,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:14,597 INFO L225 Difference]: With dead ends: 2142 [2022-01-18 12:14:14,598 INFO L226 Difference]: Without dead ends: 2016 [2022-01-18 12:14:14,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1003 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=700, Invalid=3460, Unknown=0, NotChecked=0, Total=4160 [2022-01-18 12:14:14,598 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 697 mSDsluCounter, 3086 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 3075 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:14,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [697 Valid, 3075 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1211 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:14:14,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2016 states. [2022-01-18 12:14:14,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2016 to 1245. [2022-01-18 12:14:14,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1245 states, 1244 states have (on average 2.627813504823151) internal successors, (3269), 1244 states have internal predecessors, (3269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:14,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 3269 transitions. [2022-01-18 12:14:14,615 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 3269 transitions. Word has length 72 [2022-01-18 12:14:14,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:14,615 INFO L470 AbstractCegarLoop]: Abstraction has 1245 states and 3269 transitions. [2022-01-18 12:14:14,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:14,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 3269 transitions. [2022-01-18 12:14:14,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:14:14,617 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:14,617 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:14,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-01-18 12:14:14,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2022-01-18 12:14:14,817 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:14,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:14,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1037850845, now seen corresponding path program 22 times [2022-01-18 12:14:14,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:14,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365339316] [2022-01-18 12:14:14,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:14,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:14,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:14,998 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:14,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:14,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365339316] [2022-01-18 12:14:14,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365339316] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:14,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420674993] [2022-01-18 12:14:14,998 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:14:14,998 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:14,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:14,999 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:14:15,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-01-18 12:14:15,063 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:14:15,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:14:15,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 12:14:15,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:15,666 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:15,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:16,287 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:16,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420674993] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:16,287 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:16,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-01-18 12:14:16,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152697597] [2022-01-18 12:14:16,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:16,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 12:14:16,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:16,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 12:14:16,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=1870, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 12:14:16,288 INFO L87 Difference]: Start difference. First operand 1245 states and 3269 transitions. Second operand has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:19,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:19,497 INFO L93 Difference]: Finished difference Result 3061 states and 7816 transitions. [2022-01-18 12:14:19,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-01-18 12:14:19,497 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:14:19,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:19,501 INFO L225 Difference]: With dead ends: 3061 [2022-01-18 12:14:19,501 INFO L226 Difference]: Without dead ends: 2959 [2022-01-18 12:14:19,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4039 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1335, Invalid=12005, Unknown=0, NotChecked=0, Total=13340 [2022-01-18 12:14:19,502 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 1079 mSDsluCounter, 4769 mSDsCounter, 0 mSdLazyCounter, 2048 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1079 SdHoareTripleChecker+Valid, 4748 SdHoareTripleChecker+Invalid, 2139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 2048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:19,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1079 Valid, 4748 Invalid, 2139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 2048 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 12:14:19,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2959 states. [2022-01-18 12:14:19,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2959 to 1249. [2022-01-18 12:14:19,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1249 states, 1248 states have (on average 2.6314102564102564) internal successors, (3284), 1248 states have internal predecessors, (3284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:19,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 3284 transitions. [2022-01-18 12:14:19,524 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 3284 transitions. Word has length 72 [2022-01-18 12:14:19,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:19,524 INFO L470 AbstractCegarLoop]: Abstraction has 1249 states and 3284 transitions. [2022-01-18 12:14:19,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:19,524 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 3284 transitions. [2022-01-18 12:14:19,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:14:19,526 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:19,526 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:19,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-01-18 12:14:19,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:19,739 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:19,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:19,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1799078455, now seen corresponding path program 25 times [2022-01-18 12:14:19,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:19,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100879591] [2022-01-18 12:14:19,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:19,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:19,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:19,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:19,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:19,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100879591] [2022-01-18 12:14:19,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100879591] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:19,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939985802] [2022-01-18 12:14:19,952 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:14:19,952 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:19,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:19,953 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:14:19,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-01-18 12:14:20,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:20,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:14:20,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:20,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:20,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:20,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:20,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939985802] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:20,851 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:20,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:14:20,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527302495] [2022-01-18 12:14:20,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:20,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:14:20,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:20,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:14:20,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1247, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:14:20,852 INFO L87 Difference]: Start difference. First operand 1249 states and 3284 transitions. Second operand has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:22,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:22,207 INFO L93 Difference]: Finished difference Result 2180 states and 5660 transitions. [2022-01-18 12:14:22,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 12:14:22,207 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:14:22,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:22,210 INFO L225 Difference]: With dead ends: 2180 [2022-01-18 12:14:22,211 INFO L226 Difference]: Without dead ends: 2129 [2022-01-18 12:14:22,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1183 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=633, Invalid=4197, Unknown=0, NotChecked=0, Total=4830 [2022-01-18 12:14:22,211 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 549 mSDsluCounter, 3142 mSDsCounter, 0 mSdLazyCounter, 1394 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 3156 SdHoareTripleChecker+Invalid, 1464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:22,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [549 Valid, 3156 Invalid, 1464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1394 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:14:22,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2129 states. [2022-01-18 12:14:22,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2129 to 1269. [2022-01-18 12:14:22,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1269 states, 1268 states have (on average 2.6364353312302837) internal successors, (3343), 1268 states have internal predecessors, (3343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:22,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 3343 transitions. [2022-01-18 12:14:22,229 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 3343 transitions. Word has length 72 [2022-01-18 12:14:22,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:22,229 INFO L470 AbstractCegarLoop]: Abstraction has 1269 states and 3343 transitions. [2022-01-18 12:14:22,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:22,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 3343 transitions. [2022-01-18 12:14:22,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:14:22,231 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:22,231 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:22,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-01-18 12:14:22,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:22,447 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:22,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:22,448 INFO L85 PathProgramCache]: Analyzing trace with hash -2100352131, now seen corresponding path program 26 times [2022-01-18 12:14:22,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:22,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969386552] [2022-01-18 12:14:22,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:22,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:22,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:22,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:22,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:22,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969386552] [2022-01-18 12:14:22,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969386552] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:22,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90711641] [2022-01-18 12:14:22,631 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:14:22,631 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:22,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:22,632 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:14:22,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-01-18 12:14:22,694 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:14:22,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:14:22,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:14:22,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:23,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:23,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:23,515 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:23,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90711641] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:23,515 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:23,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:14:23,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402843298] [2022-01-18 12:14:23,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:23,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:14:23,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:23,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:14:23,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1249, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:14:23,516 INFO L87 Difference]: Start difference. First operand 1269 states and 3343 transitions. Second operand has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:25,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:25,607 INFO L93 Difference]: Finished difference Result 2435 states and 6231 transitions. [2022-01-18 12:14:25,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-18 12:14:25,608 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:14:25,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:25,611 INFO L225 Difference]: With dead ends: 2435 [2022-01-18 12:14:25,611 INFO L226 Difference]: Without dead ends: 2384 [2022-01-18 12:14:25,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1947 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1019, Invalid=6291, Unknown=0, NotChecked=0, Total=7310 [2022-01-18 12:14:25,612 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 864 mSDsluCounter, 3497 mSDsCounter, 0 mSdLazyCounter, 1733 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 3511 SdHoareTripleChecker+Invalid, 1825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:25,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [864 Valid, 3511 Invalid, 1825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1733 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 12:14:25,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2384 states. [2022-01-18 12:14:25,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2384 to 1301. [2022-01-18 12:14:25,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1301 states, 1300 states have (on average 2.6546153846153846) internal successors, (3451), 1300 states have internal predecessors, (3451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:25,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1301 states to 1301 states and 3451 transitions. [2022-01-18 12:14:25,632 INFO L78 Accepts]: Start accepts. Automaton has 1301 states and 3451 transitions. Word has length 72 [2022-01-18 12:14:25,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:25,633 INFO L470 AbstractCegarLoop]: Abstraction has 1301 states and 3451 transitions. [2022-01-18 12:14:25,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:25,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1301 states and 3451 transitions. [2022-01-18 12:14:25,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:14:25,634 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:25,635 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:25,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-01-18 12:14:25,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2022-01-18 12:14:25,839 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:25,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:25,840 INFO L85 PathProgramCache]: Analyzing trace with hash -666903823, now seen corresponding path program 27 times [2022-01-18 12:14:25,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:25,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179340284] [2022-01-18 12:14:25,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:25,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:25,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:26,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:26,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:26,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179340284] [2022-01-18 12:14:26,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179340284] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:26,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769705284] [2022-01-18 12:14:26,070 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:14:26,070 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:26,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:26,071 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:14:26,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-01-18 12:14:26,137 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 12:14:26,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:14:26,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:14:26,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:26,558 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:26,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:26,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:26,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769705284] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:26,979 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:26,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:14:26,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706782150] [2022-01-18 12:14:26,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:26,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:14:26,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:26,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:14:26,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1242, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:14:26,980 INFO L87 Difference]: Start difference. First operand 1301 states and 3451 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:28,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:28,774 INFO L93 Difference]: Finished difference Result 2345 states and 6069 transitions. [2022-01-18 12:14:28,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 12:14:28,774 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:14:28,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:28,777 INFO L225 Difference]: With dead ends: 2345 [2022-01-18 12:14:28,777 INFO L226 Difference]: Without dead ends: 2264 [2022-01-18 12:14:28,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1548 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=808, Invalid=5198, Unknown=0, NotChecked=0, Total=6006 [2022-01-18 12:14:28,778 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 675 mSDsluCounter, 3507 mSDsCounter, 0 mSdLazyCounter, 1582 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 3539 SdHoareTripleChecker+Invalid, 1665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:28,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [675 Valid, 3539 Invalid, 1665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1582 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 12:14:28,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2264 states. [2022-01-18 12:14:28,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2264 to 1277. [2022-01-18 12:14:28,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1277 states, 1276 states have (on average 2.6371473354231973) internal successors, (3365), 1276 states have internal predecessors, (3365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:28,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 3365 transitions. [2022-01-18 12:14:28,796 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 3365 transitions. Word has length 72 [2022-01-18 12:14:28,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:28,797 INFO L470 AbstractCegarLoop]: Abstraction has 1277 states and 3365 transitions. [2022-01-18 12:14:28,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:28,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 3365 transitions. [2022-01-18 12:14:28,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:14:28,798 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:28,799 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:28,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-01-18 12:14:28,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2022-01-18 12:14:28,999 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:28,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:28,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1132161329, now seen corresponding path program 28 times [2022-01-18 12:14:28,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:29,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263890191] [2022-01-18 12:14:29,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:29,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:29,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:29,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:29,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:29,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263890191] [2022-01-18 12:14:29,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263890191] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:29,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013255954] [2022-01-18 12:14:29,249 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:14:29,249 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:29,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:29,250 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:14:29,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-01-18 12:14:29,316 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:14:29,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:14:29,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:14:29,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:29,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:29,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:30,182 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:30,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013255954] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:30,182 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:30,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:14:30,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394594143] [2022-01-18 12:14:30,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:30,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:14:30,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:30,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:14:30,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1254, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:14:30,183 INFO L87 Difference]: Start difference. First operand 1277 states and 3365 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:31,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:31,793 INFO L93 Difference]: Finished difference Result 2293 states and 5930 transitions. [2022-01-18 12:14:31,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 12:14:31,793 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:14:31,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:31,796 INFO L225 Difference]: With dead ends: 2293 [2022-01-18 12:14:31,796 INFO L226 Difference]: Without dead ends: 2197 [2022-01-18 12:14:31,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1354 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=669, Invalid=4881, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 12:14:31,797 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 590 mSDsluCounter, 3689 mSDsCounter, 0 mSdLazyCounter, 1577 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 3687 SdHoareTripleChecker+Invalid, 1638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:31,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [590 Valid, 3687 Invalid, 1638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1577 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:14:31,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2197 states. [2022-01-18 12:14:31,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2197 to 1285. [2022-01-18 12:14:31,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1285 states, 1284 states have (on average 2.6378504672897196) internal successors, (3387), 1284 states have internal predecessors, (3387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:31,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1285 states to 1285 states and 3387 transitions. [2022-01-18 12:14:31,815 INFO L78 Accepts]: Start accepts. Automaton has 1285 states and 3387 transitions. Word has length 72 [2022-01-18 12:14:31,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:31,815 INFO L470 AbstractCegarLoop]: Abstraction has 1285 states and 3387 transitions. [2022-01-18 12:14:31,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:31,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1285 states and 3387 transitions. [2022-01-18 12:14:31,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:14:31,817 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:31,817 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:31,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-01-18 12:14:32,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2022-01-18 12:14:32,018 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:32,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:32,018 INFO L85 PathProgramCache]: Analyzing trace with hash -487410927, now seen corresponding path program 29 times [2022-01-18 12:14:32,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:32,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377940302] [2022-01-18 12:14:32,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:32,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:32,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:32,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:32,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:32,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377940302] [2022-01-18 12:14:32,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377940302] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:32,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455045473] [2022-01-18 12:14:32,247 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:14:32,247 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:32,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:32,252 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:14:32,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-01-18 12:14:32,320 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:14:32,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:14:32,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 12:14:32,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:32,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:32,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:33,284 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:33,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455045473] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:33,285 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:33,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 41 [2022-01-18 12:14:33,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837981495] [2022-01-18 12:14:33,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:33,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 12:14:33,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:33,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 12:14:33,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=1407, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 12:14:33,286 INFO L87 Difference]: Start difference. First operand 1285 states and 3387 transitions. Second operand has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:35,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:35,416 INFO L93 Difference]: Finished difference Result 2570 states and 6644 transitions. [2022-01-18 12:14:35,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-18 12:14:35,417 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:14:35,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:35,420 INFO L225 Difference]: With dead ends: 2570 [2022-01-18 12:14:35,420 INFO L226 Difference]: Without dead ends: 2474 [2022-01-18 12:14:35,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2354 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1461, Invalid=7469, Unknown=0, NotChecked=0, Total=8930 [2022-01-18 12:14:35,421 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 948 mSDsluCounter, 3588 mSDsCounter, 0 mSdLazyCounter, 1747 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 3614 SdHoareTripleChecker+Invalid, 1858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:35,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [948 Valid, 3614 Invalid, 1858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1747 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 12:14:35,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2474 states. [2022-01-18 12:14:35,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2474 to 1333. [2022-01-18 12:14:35,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1333 states, 1332 states have (on average 2.650900900900901) internal successors, (3531), 1332 states have internal predecessors, (3531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:35,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 3531 transitions. [2022-01-18 12:14:35,441 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 3531 transitions. Word has length 72 [2022-01-18 12:14:35,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:35,441 INFO L470 AbstractCegarLoop]: Abstraction has 1333 states and 3531 transitions. [2022-01-18 12:14:35,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:35,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 3531 transitions. [2022-01-18 12:14:35,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:14:35,443 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:35,443 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:35,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-01-18 12:14:35,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2022-01-18 12:14:35,660 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:35,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:35,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1514296773, now seen corresponding path program 30 times [2022-01-18 12:14:35,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:35,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572812205] [2022-01-18 12:14:35,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:35,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:35,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:35,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:35,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:35,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572812205] [2022-01-18 12:14:35,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572812205] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:35,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488500121] [2022-01-18 12:14:35,867 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:14:35,867 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:35,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:35,868 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:14:35,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-01-18 12:14:35,935 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 12:14:35,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:14:35,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:14:35,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:36,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:36,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:36,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:36,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488500121] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:36,793 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:36,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:14:36,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290589180] [2022-01-18 12:14:36,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:36,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:14:36,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:36,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:14:36,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1251, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:14:36,794 INFO L87 Difference]: Start difference. First operand 1333 states and 3531 transitions. Second operand has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:38,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:38,853 INFO L93 Difference]: Finished difference Result 2528 states and 6508 transitions. [2022-01-18 12:14:38,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-18 12:14:38,854 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:14:38,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:38,857 INFO L225 Difference]: With dead ends: 2528 [2022-01-18 12:14:38,857 INFO L226 Difference]: Without dead ends: 2477 [2022-01-18 12:14:38,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1618 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=852, Invalid=5790, Unknown=0, NotChecked=0, Total=6642 [2022-01-18 12:14:38,858 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 704 mSDsluCounter, 3970 mSDsCounter, 0 mSdLazyCounter, 1943 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 3934 SdHoareTripleChecker+Invalid, 2016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:38,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [704 Valid, 3934 Invalid, 2016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1943 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 12:14:38,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2477 states. [2022-01-18 12:14:38,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2477 to 1337. [2022-01-18 12:14:38,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1337 states, 1336 states have (on average 2.663173652694611) internal successors, (3558), 1336 states have internal predecessors, (3558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:38,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 3558 transitions. [2022-01-18 12:14:38,877 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 3558 transitions. Word has length 72 [2022-01-18 12:14:38,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:38,877 INFO L470 AbstractCegarLoop]: Abstraction has 1337 states and 3558 transitions. [2022-01-18 12:14:38,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:38,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 3558 transitions. [2022-01-18 12:14:38,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:14:38,879 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:38,879 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:38,895 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2022-01-18 12:14:39,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-01-18 12:14:39,083 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:39,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:39,084 INFO L85 PathProgramCache]: Analyzing trace with hash 223608007, now seen corresponding path program 31 times [2022-01-18 12:14:39,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:39,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011786044] [2022-01-18 12:14:39,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:39,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:39,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:39,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:39,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:39,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011786044] [2022-01-18 12:14:39,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011786044] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:39,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775231432] [2022-01-18 12:14:39,276 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:14:39,276 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:39,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:39,277 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:14:39,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-01-18 12:14:39,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:39,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:14:39,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:39,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:39,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:40,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:40,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775231432] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:40,208 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:40,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:14:40,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341882836] [2022-01-18 12:14:40,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:40,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:14:40,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:40,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:14:40,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1259, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:14:40,209 INFO L87 Difference]: Start difference. First operand 1337 states and 3558 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:42,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:42,247 INFO L93 Difference]: Finished difference Result 2516 states and 6569 transitions. [2022-01-18 12:14:42,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-18 12:14:42,247 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:14:42,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:42,251 INFO L225 Difference]: With dead ends: 2516 [2022-01-18 12:14:42,251 INFO L226 Difference]: Without dead ends: 2405 [2022-01-18 12:14:42,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2188 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=988, Invalid=7022, Unknown=0, NotChecked=0, Total=8010 [2022-01-18 12:14:42,252 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 734 mSDsluCounter, 3620 mSDsCounter, 0 mSdLazyCounter, 1614 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 3652 SdHoareTripleChecker+Invalid, 1690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:42,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [734 Valid, 3652 Invalid, 1690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1614 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:14:42,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2405 states. [2022-01-18 12:14:42,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2405 to 1345. [2022-01-18 12:14:42,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1345 states, 1344 states have (on average 2.6607142857142856) internal successors, (3576), 1344 states have internal predecessors, (3576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:42,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1345 states to 1345 states and 3576 transitions. [2022-01-18 12:14:42,273 INFO L78 Accepts]: Start accepts. Automaton has 1345 states and 3576 transitions. Word has length 72 [2022-01-18 12:14:42,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:42,273 INFO L470 AbstractCegarLoop]: Abstraction has 1345 states and 3576 transitions. [2022-01-18 12:14:42,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:42,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1345 states and 3576 transitions. [2022-01-18 12:14:42,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:14:42,275 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:42,275 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:42,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-01-18 12:14:42,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-01-18 12:14:42,476 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:42,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:42,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1395964249, now seen corresponding path program 32 times [2022-01-18 12:14:42,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:42,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384184827] [2022-01-18 12:14:42,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:42,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:42,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:42,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:42,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:42,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384184827] [2022-01-18 12:14:42,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384184827] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:42,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763757950] [2022-01-18 12:14:42,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:14:42,694 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:42,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:42,695 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:14:42,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-01-18 12:14:42,765 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:14:42,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:14:42,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:14:42,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:43,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:43,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:43,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:43,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763757950] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:43,623 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:43,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:14:43,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096521114] [2022-01-18 12:14:43,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:43,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:14:43,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:43,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:14:43,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1243, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:14:43,624 INFO L87 Difference]: Start difference. First operand 1345 states and 3576 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:46,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:46,695 INFO L93 Difference]: Finished difference Result 2687 states and 7038 transitions. [2022-01-18 12:14:46,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-01-18 12:14:46,695 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:14:46,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:46,699 INFO L225 Difference]: With dead ends: 2687 [2022-01-18 12:14:46,699 INFO L226 Difference]: Without dead ends: 2606 [2022-01-18 12:14:46,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3896 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1702, Invalid=10954, Unknown=0, NotChecked=0, Total=12656 [2022-01-18 12:14:46,700 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 856 mSDsluCounter, 4432 mSDsCounter, 0 mSdLazyCounter, 2046 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 4488 SdHoareTripleChecker+Invalid, 2137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 2046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:46,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [856 Valid, 4488 Invalid, 2137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 2046 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 12:14:46,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2606 states. [2022-01-18 12:14:46,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2606 to 1321. [2022-01-18 12:14:46,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1321 states, 1320 states have (on average 2.65) internal successors, (3498), 1320 states have internal predecessors, (3498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:46,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1321 states to 1321 states and 3498 transitions. [2022-01-18 12:14:46,720 INFO L78 Accepts]: Start accepts. Automaton has 1321 states and 3498 transitions. Word has length 72 [2022-01-18 12:14:46,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:46,720 INFO L470 AbstractCegarLoop]: Abstraction has 1321 states and 3498 transitions. [2022-01-18 12:14:46,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:46,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1321 states and 3498 transitions. [2022-01-18 12:14:46,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:14:46,722 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:46,722 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:46,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-01-18 12:14:46,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:46,923 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:46,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:46,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1872117201, now seen corresponding path program 33 times [2022-01-18 12:14:46,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:46,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151260969] [2022-01-18 12:14:46,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:46,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:46,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:47,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:47,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:47,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151260969] [2022-01-18 12:14:47,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151260969] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:47,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57043615] [2022-01-18 12:14:47,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:14:47,122 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:47,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:47,123 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:14:47,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-01-18 12:14:47,190 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 12:14:47,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:14:47,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:14:47,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:47,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:47,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:48,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:48,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57043615] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:48,018 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:48,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:14:48,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279022883] [2022-01-18 12:14:48,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:48,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:14:48,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:48,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:14:48,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1236, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:14:48,019 INFO L87 Difference]: Start difference. First operand 1321 states and 3498 transitions. Second operand has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:49,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:49,720 INFO L93 Difference]: Finished difference Result 2285 states and 5971 transitions. [2022-01-18 12:14:49,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-18 12:14:49,720 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:14:49,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:49,723 INFO L225 Difference]: With dead ends: 2285 [2022-01-18 12:14:49,723 INFO L226 Difference]: Without dead ends: 2234 [2022-01-18 12:14:49,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1659 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=873, Invalid=5607, Unknown=0, NotChecked=0, Total=6480 [2022-01-18 12:14:49,724 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 675 mSDsluCounter, 2773 mSDsCounter, 0 mSdLazyCounter, 1329 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 2824 SdHoareTripleChecker+Invalid, 1404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:49,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [675 Valid, 2824 Invalid, 1404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1329 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:14:49,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2234 states. [2022-01-18 12:14:49,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2234 to 1309. [2022-01-18 12:14:49,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1309 states, 1308 states have (on average 2.6490825688073394) internal successors, (3465), 1308 states have internal predecessors, (3465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:49,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1309 states to 1309 states and 3465 transitions. [2022-01-18 12:14:49,742 INFO L78 Accepts]: Start accepts. Automaton has 1309 states and 3465 transitions. Word has length 72 [2022-01-18 12:14:49,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:49,742 INFO L470 AbstractCegarLoop]: Abstraction has 1309 states and 3465 transitions. [2022-01-18 12:14:49,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:49,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1309 states and 3465 transitions. [2022-01-18 12:14:49,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:14:49,744 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:49,744 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:49,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-01-18 12:14:49,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:49,944 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:49,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:49,945 INFO L85 PathProgramCache]: Analyzing trace with hash -467367883, now seen corresponding path program 34 times [2022-01-18 12:14:49,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:49,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244272731] [2022-01-18 12:14:49,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:49,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:49,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:50,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:50,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:50,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244272731] [2022-01-18 12:14:50,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244272731] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:50,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255739494] [2022-01-18 12:14:50,124 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:14:50,124 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:50,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:50,126 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:14:50,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-01-18 12:14:50,193 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:14:50,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:14:50,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:14:50,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:50,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:50,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:51,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:51,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255739494] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:51,034 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:51,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:14:51,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626969275] [2022-01-18 12:14:51,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:51,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:14:51,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:51,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:14:51,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1256, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:14:51,035 INFO L87 Difference]: Start difference. First operand 1309 states and 3465 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:54,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:54,611 INFO L93 Difference]: Finished difference Result 3240 states and 8347 transitions. [2022-01-18 12:14:54,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-01-18 12:14:54,611 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:14:54,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:54,615 INFO L225 Difference]: With dead ends: 3240 [2022-01-18 12:14:54,615 INFO L226 Difference]: Without dead ends: 3078 [2022-01-18 12:14:54,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5603 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1739, Invalid=14773, Unknown=0, NotChecked=0, Total=16512 [2022-01-18 12:14:54,616 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 1241 mSDsluCounter, 4014 mSDsCounter, 0 mSdLazyCounter, 1840 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1241 SdHoareTripleChecker+Valid, 4026 SdHoareTripleChecker+Invalid, 1966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:54,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1241 Valid, 4026 Invalid, 1966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1840 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 12:14:54,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3078 states. [2022-01-18 12:14:54,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3078 to 1381. [2022-01-18 12:14:54,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1381 states, 1380 states have (on average 2.6717391304347826) internal successors, (3687), 1380 states have internal predecessors, (3687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:54,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 3687 transitions. [2022-01-18 12:14:54,637 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 3687 transitions. Word has length 72 [2022-01-18 12:14:54,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:54,638 INFO L470 AbstractCegarLoop]: Abstraction has 1381 states and 3687 transitions. [2022-01-18 12:14:54,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:54,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 3687 transitions. [2022-01-18 12:14:54,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:14:54,639 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:54,639 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:54,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-01-18 12:14:54,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:54,844 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:54,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:54,844 INFO L85 PathProgramCache]: Analyzing trace with hash -2086940139, now seen corresponding path program 35 times [2022-01-18 12:14:54,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:54,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642453979] [2022-01-18 12:14:54,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:54,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:54,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:55,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:55,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:55,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642453979] [2022-01-18 12:14:55,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642453979] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:55,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459080144] [2022-01-18 12:14:55,040 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:14:55,040 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:55,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:55,041 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:14:55,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-01-18 12:14:55,106 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:14:55,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:14:55,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 12:14:55,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:55,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:55,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:56,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:56,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459080144] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:56,058 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:56,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 41 [2022-01-18 12:14:56,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407963049] [2022-01-18 12:14:56,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:56,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 12:14:56,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:56,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 12:14:56,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=1379, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 12:14:56,059 INFO L87 Difference]: Start difference. First operand 1381 states and 3687 transitions. Second operand has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:58,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:58,399 INFO L93 Difference]: Finished difference Result 2915 states and 7622 transitions. [2022-01-18 12:14:58,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-01-18 12:14:58,399 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:14:58,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:58,403 INFO L225 Difference]: With dead ends: 2915 [2022-01-18 12:14:58,403 INFO L226 Difference]: Without dead ends: 2804 [2022-01-18 12:14:58,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3317 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2042, Invalid=8878, Unknown=0, NotChecked=0, Total=10920 [2022-01-18 12:14:58,405 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 1160 mSDsluCounter, 2949 mSDsCounter, 0 mSdLazyCounter, 1404 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1160 SdHoareTripleChecker+Valid, 2957 SdHoareTripleChecker+Invalid, 1540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:58,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1160 Valid, 2957 Invalid, 1540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1404 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:14:58,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2804 states. [2022-01-18 12:14:58,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2804 to 1401. [2022-01-18 12:14:58,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1401 states, 1400 states have (on average 2.6785714285714284) internal successors, (3750), 1400 states have internal predecessors, (3750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:58,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1401 states to 1401 states and 3750 transitions. [2022-01-18 12:14:58,427 INFO L78 Accepts]: Start accepts. Automaton has 1401 states and 3750 transitions. Word has length 72 [2022-01-18 12:14:58,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:58,427 INFO L470 AbstractCegarLoop]: Abstraction has 1401 states and 3750 transitions. [2022-01-18 12:14:58,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:14:58,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1401 states and 3750 transitions. [2022-01-18 12:14:58,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:14:58,428 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:58,428 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:58,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2022-01-18 12:14:58,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:58,629 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:58,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:58,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1181141311, now seen corresponding path program 36 times [2022-01-18 12:14:58,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:58,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396480165] [2022-01-18 12:14:58,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:58,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:58,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:58,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:58,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:58,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396480165] [2022-01-18 12:14:58,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396480165] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:58,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571321805] [2022-01-18 12:14:58,806 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:14:58,806 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:58,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:58,807 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:14:58,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-01-18 12:14:58,875 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 12:14:58,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:14:58,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:14:58,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:59,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:59,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:59,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:59,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571321805] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:59,697 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:59,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:14:59,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750774712] [2022-01-18 12:14:59,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:59,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:14:59,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:59,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:14:59,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1230, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:14:59,698 INFO L87 Difference]: Start difference. First operand 1401 states and 3750 transitions. Second operand has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:15:02,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:15:02,749 INFO L93 Difference]: Finished difference Result 3430 states and 8947 transitions. [2022-01-18 12:15:02,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-01-18 12:15:02,749 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:15:02,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:15:02,753 INFO L225 Difference]: With dead ends: 3430 [2022-01-18 12:15:02,753 INFO L226 Difference]: Without dead ends: 3328 [2022-01-18 12:15:02,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4252 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1760, Invalid=11350, Unknown=0, NotChecked=0, Total=13110 [2022-01-18 12:15:02,755 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 1297 mSDsluCounter, 3686 mSDsCounter, 0 mSdLazyCounter, 1736 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1297 SdHoareTripleChecker+Valid, 3664 SdHoareTripleChecker+Invalid, 1882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:15:02,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1297 Valid, 3664 Invalid, 1882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1736 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 12:15:02,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3328 states. [2022-01-18 12:15:02,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3328 to 1425. [2022-01-18 12:15:02,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1425 states, 1424 states have (on average 2.699438202247191) internal successors, (3844), 1424 states have internal predecessors, (3844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:15:02,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 3844 transitions. [2022-01-18 12:15:02,778 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 3844 transitions. Word has length 72 [2022-01-18 12:15:02,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:15:02,778 INFO L470 AbstractCegarLoop]: Abstraction has 1425 states and 3844 transitions. [2022-01-18 12:15:02,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:15:02,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 3844 transitions. [2022-01-18 12:15:02,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:15:02,780 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:15:02,780 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:15:02,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-01-18 12:15:02,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2022-01-18 12:15:02,986 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:15:02,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:15:02,986 INFO L85 PathProgramCache]: Analyzing trace with hash -2002537807, now seen corresponding path program 37 times [2022-01-18 12:15:02,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:15:02,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468941436] [2022-01-18 12:15:02,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:15:02,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:15:02,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:15:03,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:03,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:15:03,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468941436] [2022-01-18 12:15:03,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468941436] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:15:03,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021176180] [2022-01-18 12:15:03,190 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:15:03,190 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:03,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:15:03,191 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:15:03,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-01-18 12:15:03,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:15:03,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:15:03,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:15:03,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:03,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:15:04,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:04,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021176180] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:15:04,079 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:15:04,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:15:04,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637519889] [2022-01-18 12:15:04,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:15:04,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:15:04,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:15:04,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:15:04,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1253, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:15:04,080 INFO L87 Difference]: Start difference. First operand 1425 states and 3844 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:15:05,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:15:05,199 INFO L93 Difference]: Finished difference Result 2375 states and 6273 transitions. [2022-01-18 12:15:05,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 12:15:05,199 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:15:05,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:15:05,202 INFO L225 Difference]: With dead ends: 2375 [2022-01-18 12:15:05,202 INFO L226 Difference]: Without dead ends: 2249 [2022-01-18 12:15:05,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1174 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=536, Invalid=4156, Unknown=0, NotChecked=0, Total=4692 [2022-01-18 12:15:05,203 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 642 mSDsluCounter, 2854 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 2877 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:15:05,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [642 Valid, 2877 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:15:05,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2249 states. [2022-01-18 12:15:05,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2249 to 1425. [2022-01-18 12:15:05,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1425 states, 1424 states have (on average 2.693820224719101) internal successors, (3836), 1424 states have internal predecessors, (3836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:15:05,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 3836 transitions. [2022-01-18 12:15:05,221 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 3836 transitions. Word has length 72 [2022-01-18 12:15:05,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:15:05,221 INFO L470 AbstractCegarLoop]: Abstraction has 1425 states and 3836 transitions. [2022-01-18 12:15:05,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:15:05,221 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 3836 transitions. [2022-01-18 12:15:05,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:15:05,222 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:15:05,222 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:15:05,238 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2022-01-18 12:15:05,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2022-01-18 12:15:05,423 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:15:05,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:15:05,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1441977873, now seen corresponding path program 23 times [2022-01-18 12:15:05,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:15:05,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615235970] [2022-01-18 12:15:05,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:15:05,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:15:05,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:15:05,603 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:05,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:15:05,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615235970] [2022-01-18 12:15:05,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615235970] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:15:05,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090420837] [2022-01-18 12:15:05,603 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:15:05,603 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:05,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:15:05,604 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:15:05,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-01-18 12:15:05,672 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 12:15:05,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:15:05,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 12:15:05,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:15:06,242 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:06,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:15:06,874 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:06,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090420837] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:15:06,874 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:15:06,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-01-18 12:15:06,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636809802] [2022-01-18 12:15:06,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:15:06,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 12:15:06,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:15:06,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 12:15:06,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1866, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 12:15:06,875 INFO L87 Difference]: Start difference. First operand 1425 states and 3836 transitions. Second operand has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:15:11,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:15:11,825 INFO L93 Difference]: Finished difference Result 3799 states and 9840 transitions. [2022-01-18 12:15:11,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-01-18 12:15:11,826 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:15:11,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:15:11,831 INFO L225 Difference]: With dead ends: 3799 [2022-01-18 12:15:11,831 INFO L226 Difference]: Without dead ends: 3697 [2022-01-18 12:15:11,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7627 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=2451, Invalid=20199, Unknown=0, NotChecked=0, Total=22650 [2022-01-18 12:15:11,833 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 1669 mSDsluCounter, 4749 mSDsCounter, 0 mSdLazyCounter, 2290 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1669 SdHoareTripleChecker+Valid, 4791 SdHoareTripleChecker+Invalid, 2461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 2290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 12:15:11,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1669 Valid, 4791 Invalid, 2461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 2290 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 12:15:11,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3697 states. [2022-01-18 12:15:11,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3697 to 1481. [2022-01-18 12:15:11,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1481 states, 1480 states have (on average 2.7256756756756757) internal successors, (4034), 1480 states have internal predecessors, (4034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:15:11,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 4034 transitions. [2022-01-18 12:15:11,860 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 4034 transitions. Word has length 72 [2022-01-18 12:15:11,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:15:11,861 INFO L470 AbstractCegarLoop]: Abstraction has 1481 states and 4034 transitions. [2022-01-18 12:15:11,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:15:11,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 4034 transitions. [2022-01-18 12:15:11,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:15:11,862 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:15:11,862 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:15:11,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-01-18 12:15:12,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:12,063 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:15:12,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:15:12,063 INFO L85 PathProgramCache]: Analyzing trace with hash -300154625, now seen corresponding path program 38 times [2022-01-18 12:15:12,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:15:12,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401207907] [2022-01-18 12:15:12,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:15:12,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:15:12,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:15:12,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:12,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:15:12,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401207907] [2022-01-18 12:15:12,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401207907] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:15:12,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993655645] [2022-01-18 12:15:12,240 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:15:12,240 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:12,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:15:12,241 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:15:12,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-01-18 12:15:12,311 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:15:12,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:15:12,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:15:12,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:15:12,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:12,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:15:13,119 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:13,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993655645] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:15:13,119 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:15:13,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:15:13,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093039051] [2022-01-18 12:15:13,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:15:13,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:15:13,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:15:13,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:15:13,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1228, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:15:13,120 INFO L87 Difference]: Start difference. First operand 1481 states and 4034 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:15:17,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:15:17,759 INFO L93 Difference]: Finished difference Result 4297 states and 11095 transitions. [2022-01-18 12:15:17,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2022-01-18 12:15:17,759 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:15:17,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:15:17,765 INFO L225 Difference]: With dead ends: 4297 [2022-01-18 12:15:17,765 INFO L226 Difference]: Without dead ends: 4054 [2022-01-18 12:15:17,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7882 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=2815, Invalid=18941, Unknown=0, NotChecked=0, Total=21756 [2022-01-18 12:15:17,767 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 1795 mSDsluCounter, 4143 mSDsCounter, 0 mSdLazyCounter, 2000 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1795 SdHoareTripleChecker+Valid, 4150 SdHoareTripleChecker+Invalid, 2189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 2000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 12:15:17,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1795 Valid, 4150 Invalid, 2189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 2000 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 12:15:17,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4054 states. [2022-01-18 12:15:17,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4054 to 1533. [2022-01-18 12:15:17,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1533 states, 1532 states have (on average 2.7578328981723237) internal successors, (4225), 1532 states have internal predecessors, (4225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:15:17,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1533 states to 1533 states and 4225 transitions. [2022-01-18 12:15:17,798 INFO L78 Accepts]: Start accepts. Automaton has 1533 states and 4225 transitions. Word has length 72 [2022-01-18 12:15:17,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:15:17,798 INFO L470 AbstractCegarLoop]: Abstraction has 1533 states and 4225 transitions. [2022-01-18 12:15:17,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:15:17,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1533 states and 4225 transitions. [2022-01-18 12:15:17,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:15:17,807 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:15:17,807 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:15:17,824 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2022-01-18 12:15:18,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:18,015 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:15:18,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:15:18,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1763276851, now seen corresponding path program 39 times [2022-01-18 12:15:18,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:15:18,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118797793] [2022-01-18 12:15:18,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:15:18,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:15:18,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:15:18,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:18,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:15:18,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118797793] [2022-01-18 12:15:18,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118797793] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:15:18,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258369510] [2022-01-18 12:15:18,210 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:15:18,210 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:18,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:15:18,211 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:15:18,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-01-18 12:15:18,287 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 12:15:18,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:15:18,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:15:18,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:15:18,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:18,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:15:19,077 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:19,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258369510] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:15:19,078 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:15:19,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:15:19,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209770851] [2022-01-18 12:15:19,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:15:19,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:15:19,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:15:19,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:15:19,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1220, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:15:19,079 INFO L87 Difference]: Start difference. First operand 1533 states and 4225 transitions. Second operand has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:15:21,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:15:21,938 INFO L93 Difference]: Finished difference Result 3300 states and 8541 transitions. [2022-01-18 12:15:21,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-01-18 12:15:21,938 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:15:21,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:15:21,943 INFO L225 Difference]: With dead ends: 3300 [2022-01-18 12:15:21,943 INFO L226 Difference]: Without dead ends: 3147 [2022-01-18 12:15:21,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3928 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1690, Invalid=10520, Unknown=0, NotChecked=0, Total=12210 [2022-01-18 12:15:21,944 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 1194 mSDsluCounter, 4093 mSDsCounter, 0 mSdLazyCounter, 1952 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1194 SdHoareTripleChecker+Valid, 4083 SdHoareTripleChecker+Invalid, 2055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 12:15:21,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1194 Valid, 4083 Invalid, 2055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1952 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 12:15:21,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3147 states. [2022-01-18 12:15:21,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3147 to 1509. [2022-01-18 12:15:21,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1509 states, 1508 states have (on average 2.75) internal successors, (4147), 1508 states have internal predecessors, (4147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:15:21,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 4147 transitions. [2022-01-18 12:15:21,970 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 4147 transitions. Word has length 72 [2022-01-18 12:15:21,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:15:21,970 INFO L470 AbstractCegarLoop]: Abstraction has 1509 states and 4147 transitions. [2022-01-18 12:15:21,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:15:21,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 4147 transitions. [2022-01-18 12:15:21,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:15:21,971 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:15:21,971 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:15:21,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-01-18 12:15:22,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2022-01-18 12:15:22,173 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:15:22,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:15:22,174 INFO L85 PathProgramCache]: Analyzing trace with hash -651988673, now seen corresponding path program 40 times [2022-01-18 12:15:22,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:15:22,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792081464] [2022-01-18 12:15:22,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:15:22,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:15:22,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:15:22,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:22,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:15:22,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792081464] [2022-01-18 12:15:22,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792081464] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:15:22,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495428284] [2022-01-18 12:15:22,337 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:15:22,337 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:22,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:15:22,338 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:15:22,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-01-18 12:15:22,404 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:15:22,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:15:22,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:15:22,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:15:22,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:22,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:15:23,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:23,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495428284] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:15:23,177 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:15:23,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:15:23,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696471278] [2022-01-18 12:15:23,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:15:23,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:15:23,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:15:23,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:15:23,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1245, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:15:23,178 INFO L87 Difference]: Start difference. First operand 1509 states and 4147 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:15:24,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:15:24,922 INFO L93 Difference]: Finished difference Result 2910 states and 7556 transitions. [2022-01-18 12:15:24,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-18 12:15:24,923 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:15:24,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:15:24,927 INFO L225 Difference]: With dead ends: 2910 [2022-01-18 12:15:24,927 INFO L226 Difference]: Without dead ends: 2733 [2022-01-18 12:15:24,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1991 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=863, Invalid=6277, Unknown=0, NotChecked=0, Total=7140 [2022-01-18 12:15:24,928 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 897 mSDsluCounter, 3419 mSDsCounter, 0 mSdLazyCounter, 1393 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 3408 SdHoareTripleChecker+Invalid, 1466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:15:24,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [897 Valid, 3408 Invalid, 1466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1393 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:15:24,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2733 states. [2022-01-18 12:15:24,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2733 to 1531. [2022-01-18 12:15:24,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1531 states, 1530 states have (on average 2.73921568627451) internal successors, (4191), 1530 states have internal predecessors, (4191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:15:24,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1531 states to 1531 states and 4191 transitions. [2022-01-18 12:15:24,952 INFO L78 Accepts]: Start accepts. Automaton has 1531 states and 4191 transitions. Word has length 72 [2022-01-18 12:15:24,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:15:24,952 INFO L470 AbstractCegarLoop]: Abstraction has 1531 states and 4191 transitions. [2022-01-18 12:15:24,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:15:24,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1531 states and 4191 transitions. [2022-01-18 12:15:24,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:15:24,953 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:15:24,954 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:15:24,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-01-18 12:15:25,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-01-18 12:15:25,171 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:15:25,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:15:25,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1891688521, now seen corresponding path program 41 times [2022-01-18 12:15:25,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:15:25,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735771077] [2022-01-18 12:15:25,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:15:25,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:15:25,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:15:25,331 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:25,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:15:25,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735771077] [2022-01-18 12:15:25,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735771077] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:15:25,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408535631] [2022-01-18 12:15:25,332 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:15:25,332 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:25,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:15:25,333 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:15:25,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-01-18 12:15:25,402 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:15:25,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:15:25,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 12:15:25,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:15:25,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:25,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:15:26,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:26,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408535631] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:15:26,307 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:15:26,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 41 [2022-01-18 12:15:26,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231912290] [2022-01-18 12:15:26,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:15:26,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 12:15:26,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:15:26,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 12:15:26,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=1391, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 12:15:26,308 INFO L87 Difference]: Start difference. First operand 1531 states and 4191 transitions. Second operand has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:15:27,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:15:27,282 INFO L93 Difference]: Finished difference Result 2300 states and 6085 transitions. [2022-01-18 12:15:27,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-18 12:15:27,283 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:15:27,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:15:27,286 INFO L225 Difference]: With dead ends: 2300 [2022-01-18 12:15:27,286 INFO L226 Difference]: Without dead ends: 2159 [2022-01-18 12:15:27,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1115 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=701, Invalid=3855, Unknown=0, NotChecked=0, Total=4556 [2022-01-18 12:15:27,287 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 744 mSDsluCounter, 3089 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 3088 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:15:27,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [744 Valid, 3088 Invalid, 1293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:15:27,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2159 states. [2022-01-18 12:15:27,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2159 to 1531. [2022-01-18 12:15:27,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1531 states, 1530 states have (on average 2.7366013071895425) internal successors, (4187), 1530 states have internal predecessors, (4187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:15:27,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1531 states to 1531 states and 4187 transitions. [2022-01-18 12:15:27,306 INFO L78 Accepts]: Start accepts. Automaton has 1531 states and 4187 transitions. Word has length 72 [2022-01-18 12:15:27,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:15:27,306 INFO L470 AbstractCegarLoop]: Abstraction has 1531 states and 4187 transitions. [2022-01-18 12:15:27,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:15:27,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1531 states and 4187 transitions. [2022-01-18 12:15:27,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:15:27,308 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:15:27,308 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:15:27,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-01-18 12:15:27,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:27,508 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:15:27,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:15:27,509 INFO L85 PathProgramCache]: Analyzing trace with hash 53724637, now seen corresponding path program 24 times [2022-01-18 12:15:27,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:15:27,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483766979] [2022-01-18 12:15:27,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:15:27,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:15:27,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:15:27,706 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:27,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:15:27,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483766979] [2022-01-18 12:15:27,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483766979] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:15:27,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909765424] [2022-01-18 12:15:27,707 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:15:27,707 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:27,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:15:27,708 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:15:27,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-01-18 12:15:27,780 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 12:15:27,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:15:27,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 12:15:27,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:15:28,368 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:28,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:15:29,004 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:29,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909765424] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:15:29,005 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:15:29,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-01-18 12:15:29,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576246794] [2022-01-18 12:15:29,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:15:29,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 12:15:29,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:15:29,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 12:15:29,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1868, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 12:15:29,006 INFO L87 Difference]: Start difference. First operand 1531 states and 4187 transitions. Second operand has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:15:34,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:15:34,507 INFO L93 Difference]: Finished difference Result 3872 states and 10071 transitions. [2022-01-18 12:15:34,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-01-18 12:15:34,508 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:15:34,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:15:34,512 INFO L225 Difference]: With dead ends: 3872 [2022-01-18 12:15:34,512 INFO L226 Difference]: Without dead ends: 3770 [2022-01-18 12:15:34,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7356 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=2479, Invalid=19871, Unknown=0, NotChecked=0, Total=22350 [2022-01-18 12:15:34,513 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 1177 mSDsluCounter, 5301 mSDsCounter, 0 mSdLazyCounter, 2618 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1177 SdHoareTripleChecker+Valid, 5336 SdHoareTripleChecker+Invalid, 2784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 2618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 12:15:34,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1177 Valid, 5336 Invalid, 2784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 2618 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 12:15:34,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3770 states. [2022-01-18 12:15:34,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3770 to 1535. [2022-01-18 12:15:34,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1535 states, 1534 states have (on average 2.7392438070404173) internal successors, (4202), 1534 states have internal predecessors, (4202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:15:34,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 4202 transitions. [2022-01-18 12:15:34,539 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 4202 transitions. Word has length 72 [2022-01-18 12:15:34,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:15:34,539 INFO L470 AbstractCegarLoop]: Abstraction has 1535 states and 4202 transitions. [2022-01-18 12:15:34,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:15:34,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 4202 transitions. [2022-01-18 12:15:34,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:15:34,541 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:15:34,541 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:15:34,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-01-18 12:15:34,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable71 [2022-01-18 12:15:34,742 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:15:34,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:15:34,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1130907407, now seen corresponding path program 25 times [2022-01-18 12:15:34,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:15:34,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806834188] [2022-01-18 12:15:34,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:15:34,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:15:34,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:15:34,926 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:34,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:15:34,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806834188] [2022-01-18 12:15:34,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806834188] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:15:34,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20665518] [2022-01-18 12:15:34,927 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:15:34,927 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:34,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:15:34,928 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:15:34,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-01-18 12:15:34,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:15:34,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 12:15:34,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:15:35,574 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:35,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:15:36,223 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:36,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20665518] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:15:36,223 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:15:36,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-01-18 12:15:36,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669573509] [2022-01-18 12:15:36,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:15:36,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 12:15:36,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:15:36,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 12:15:36,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1868, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 12:15:36,225 INFO L87 Difference]: Start difference. First operand 1535 states and 4202 transitions. Second operand has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:15:42,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:15:42,868 INFO L93 Difference]: Finished difference Result 4721 states and 12303 transitions. [2022-01-18 12:15:42,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2022-01-18 12:15:42,868 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:15:42,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:15:42,874 INFO L225 Difference]: With dead ends: 4721 [2022-01-18 12:15:42,875 INFO L226 Difference]: Without dead ends: 4619 [2022-01-18 12:15:42,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10482 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=3348, Invalid=26408, Unknown=0, NotChecked=0, Total=29756 [2022-01-18 12:15:42,876 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 1417 mSDsluCounter, 5837 mSDsCounter, 0 mSdLazyCounter, 3296 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1417 SdHoareTripleChecker+Valid, 5886 SdHoareTripleChecker+Invalid, 3470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 3296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:15:42,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1417 Valid, 5886 Invalid, 3470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 3296 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 12:15:42,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4619 states. [2022-01-18 12:15:42,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4619 to 1539. [2022-01-18 12:15:42,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1539 states, 1538 states have (on average 2.7418725617685307) internal successors, (4217), 1538 states have internal predecessors, (4217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:15:42,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1539 states to 1539 states and 4217 transitions. [2022-01-18 12:15:42,906 INFO L78 Accepts]: Start accepts. Automaton has 1539 states and 4217 transitions. Word has length 72 [2022-01-18 12:15:42,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:15:42,906 INFO L470 AbstractCegarLoop]: Abstraction has 1539 states and 4217 transitions. [2022-01-18 12:15:42,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:15:42,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1539 states and 4217 transitions. [2022-01-18 12:15:42,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:15:42,908 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:15:42,908 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:15:42,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-01-18 12:15:43,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:43,109 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:15:43,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:15:43,109 INFO L85 PathProgramCache]: Analyzing trace with hash -2097938847, now seen corresponding path program 26 times [2022-01-18 12:15:43,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:15:43,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18110695] [2022-01-18 12:15:43,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:15:43,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:15:43,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:15:43,304 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:43,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:15:43,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18110695] [2022-01-18 12:15:43,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18110695] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:15:43,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569557614] [2022-01-18 12:15:43,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:15:43,304 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:43,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:15:43,305 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:15:43,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-01-18 12:15:43,376 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:15:43,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:15:43,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 12:15:43,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:15:43,956 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:43,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:15:44,641 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:44,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569557614] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:15:44,641 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:15:44,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-01-18 12:15:44,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83415350] [2022-01-18 12:15:44,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:15:44,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 12:15:44,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:15:44,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 12:15:44,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1883, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 12:15:44,642 INFO L87 Difference]: Start difference. First operand 1539 states and 4217 transitions. Second operand has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:15:53,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:15:53,997 INFO L93 Difference]: Finished difference Result 5467 states and 14367 transitions. [2022-01-18 12:15:53,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2022-01-18 12:15:53,997 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:15:53,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:15:54,016 INFO L225 Difference]: With dead ends: 5467 [2022-01-18 12:15:54,016 INFO L226 Difference]: Without dead ends: 5365 [2022-01-18 12:15:54,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17054 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=5192, Invalid=39540, Unknown=0, NotChecked=0, Total=44732 [2022-01-18 12:15:54,019 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 1829 mSDsluCounter, 7227 mSDsCounter, 0 mSdLazyCounter, 3954 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1829 SdHoareTripleChecker+Valid, 7292 SdHoareTripleChecker+Invalid, 4237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 3954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:15:54,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1829 Valid, 7292 Invalid, 4237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 3954 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 12:15:54,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5365 states. [2022-01-18 12:15:54,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5365 to 1543. [2022-01-18 12:15:54,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 1542 states have (on average 2.7444876783398184) internal successors, (4232), 1542 states have internal predecessors, (4232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:15:54,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 4232 transitions. [2022-01-18 12:15:54,067 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 4232 transitions. Word has length 72 [2022-01-18 12:15:54,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:15:54,067 INFO L470 AbstractCegarLoop]: Abstraction has 1543 states and 4232 transitions. [2022-01-18 12:15:54,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:15:54,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 4232 transitions. [2022-01-18 12:15:54,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:15:54,069 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:15:54,070 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:15:54,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2022-01-18 12:15:54,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:54,286 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:15:54,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:15:54,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1162022189, now seen corresponding path program 27 times [2022-01-18 12:15:54,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:15:54,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748900617] [2022-01-18 12:15:54,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:15:54,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:15:54,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:15:54,499 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:54,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:15:54,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748900617] [2022-01-18 12:15:54,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748900617] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:15:54,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82089793] [2022-01-18 12:15:54,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:15:54,499 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:54,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:15:54,500 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:15:54,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-01-18 12:15:54,577 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 12:15:54,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:15:54,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 12:15:54,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:15:55,168 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:55,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:15:55,844 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:55,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82089793] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:15:55,845 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:15:55,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-01-18 12:15:55,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264284666] [2022-01-18 12:15:55,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:15:55,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 12:15:55,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:15:55,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 12:15:55,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1878, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 12:15:55,846 INFO L87 Difference]: Start difference. First operand 1543 states and 4232 transitions. Second operand has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:06,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:16:06,895 INFO L93 Difference]: Finished difference Result 5592 states and 14455 transitions. [2022-01-18 12:16:06,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2022-01-18 12:16:06,896 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:16:06,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:16:06,905 INFO L225 Difference]: With dead ends: 5592 [2022-01-18 12:16:06,905 INFO L226 Difference]: Without dead ends: 5490 [2022-01-18 12:16:06,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21115 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=6380, Invalid=48142, Unknown=0, NotChecked=0, Total=54522 [2022-01-18 12:16:06,907 INFO L933 BasicCegarLoop]: 353 mSDtfsCounter, 2302 mSDsluCounter, 6379 mSDsCounter, 0 mSdLazyCounter, 3753 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2302 SdHoareTripleChecker+Valid, 6461 SdHoareTripleChecker+Invalid, 4073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 3753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:16:06,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2302 Valid, 6461 Invalid, 4073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 3753 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 12:16:06,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5490 states. [2022-01-18 12:16:06,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5490 to 1519. [2022-01-18 12:16:06,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1519 states, 1518 states have (on average 2.7417654808959155) internal successors, (4162), 1518 states have internal predecessors, (4162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:06,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 4162 transitions. [2022-01-18 12:16:06,943 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 4162 transitions. Word has length 72 [2022-01-18 12:16:06,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:16:06,943 INFO L470 AbstractCegarLoop]: Abstraction has 1519 states and 4162 transitions. [2022-01-18 12:16:06,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:06,943 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 4162 transitions. [2022-01-18 12:16:06,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:16:06,945 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:16:06,945 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:16:06,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-01-18 12:16:07,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2022-01-18 12:16:07,159 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:16:07,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:16:07,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1007505865, now seen corresponding path program 28 times [2022-01-18 12:16:07,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:16:07,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270031753] [2022-01-18 12:16:07,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:16:07,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:16:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:16:07,351 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:07,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:16:07,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270031753] [2022-01-18 12:16:07,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270031753] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:16:07,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830126804] [2022-01-18 12:16:07,352 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:16:07,352 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:16:07,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:16:07,353 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:16:07,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-01-18 12:16:07,423 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:16:07,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:16:07,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 12:16:07,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:16:07,987 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:07,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:16:08,624 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:08,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830126804] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:16:08,624 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:16:08,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-01-18 12:16:08,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724866629] [2022-01-18 12:16:08,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:16:08,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 12:16:08,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:16:08,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 12:16:08,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=1867, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 12:16:08,625 INFO L87 Difference]: Start difference. First operand 1519 states and 4162 transitions. Second operand has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:11,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:16:11,643 INFO L93 Difference]: Finished difference Result 3279 states and 8628 transitions. [2022-01-18 12:16:11,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-01-18 12:16:11,644 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:16:11,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:16:11,649 INFO L225 Difference]: With dead ends: 3279 [2022-01-18 12:16:11,649 INFO L226 Difference]: Without dead ends: 3177 [2022-01-18 12:16:11,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4059 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1266, Invalid=12306, Unknown=0, NotChecked=0, Total=13572 [2022-01-18 12:16:11,650 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 1119 mSDsluCounter, 4739 mSDsCounter, 0 mSdLazyCounter, 2055 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1119 SdHoareTripleChecker+Valid, 4735 SdHoareTripleChecker+Invalid, 2151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 2055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 12:16:11,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1119 Valid, 4735 Invalid, 2151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 2055 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 12:16:11,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3177 states. [2022-01-18 12:16:11,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3177 to 1555. [2022-01-18 12:16:11,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1555 states, 1554 states have (on average 2.7419562419562418) internal successors, (4261), 1554 states have internal predecessors, (4261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:11,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 4261 transitions. [2022-01-18 12:16:11,674 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 4261 transitions. Word has length 72 [2022-01-18 12:16:11,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:16:11,674 INFO L470 AbstractCegarLoop]: Abstraction has 1555 states and 4261 transitions. [2022-01-18 12:16:11,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:11,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 4261 transitions. [2022-01-18 12:16:11,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:16:11,676 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:16:11,676 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:16:11,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-01-18 12:16:11,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:16:11,891 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:16:11,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:16:11,892 INFO L85 PathProgramCache]: Analyzing trace with hash 246278255, now seen corresponding path program 42 times [2022-01-18 12:16:11,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:16:11,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769079522] [2022-01-18 12:16:11,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:16:11,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:16:11,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:16:12,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:12,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:16:12,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769079522] [2022-01-18 12:16:12,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769079522] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:16:12,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007918046] [2022-01-18 12:16:12,106 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:16:12,106 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:16:12,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:16:12,107 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:16:12,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-01-18 12:16:12,186 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 12:16:12,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:16:12,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:16:12,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:16:12,617 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:12,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:16:13,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:13,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007918046] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:16:13,026 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:16:13,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:16:13,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653988847] [2022-01-18 12:16:13,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:16:13,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:16:13,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:16:13,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:16:13,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1254, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:16:13,027 INFO L87 Difference]: Start difference. First operand 1555 states and 4261 transitions. Second operand has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:14,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:16:14,957 INFO L93 Difference]: Finished difference Result 2700 states and 7143 transitions. [2022-01-18 12:16:14,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-01-18 12:16:14,957 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:16:14,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:16:14,962 INFO L225 Difference]: With dead ends: 2700 [2022-01-18 12:16:14,962 INFO L226 Difference]: Without dead ends: 2598 [2022-01-18 12:16:14,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2285 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=919, Invalid=7271, Unknown=0, NotChecked=0, Total=8190 [2022-01-18 12:16:14,963 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 810 mSDsluCounter, 3225 mSDsCounter, 0 mSdLazyCounter, 1380 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 3284 SdHoareTripleChecker+Invalid, 1479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:16:14,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [810 Valid, 3284 Invalid, 1479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1380 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:16:14,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2598 states. [2022-01-18 12:16:14,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2598 to 1595. [2022-01-18 12:16:14,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1595 states, 1594 states have (on average 2.747176913425345) internal successors, (4379), 1594 states have internal predecessors, (4379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:14,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 4379 transitions. [2022-01-18 12:16:14,985 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 4379 transitions. Word has length 72 [2022-01-18 12:16:14,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:16:14,986 INFO L470 AbstractCegarLoop]: Abstraction has 1595 states and 4379 transitions. [2022-01-18 12:16:14,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:14,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 4379 transitions. [2022-01-18 12:16:14,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:16:14,988 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:16:14,988 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:16:15,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-01-18 12:16:15,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:16:15,195 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:16:15,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:16:15,196 INFO L85 PathProgramCache]: Analyzing trace with hash -54995421, now seen corresponding path program 43 times [2022-01-18 12:16:15,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:16:15,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854846603] [2022-01-18 12:16:15,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:16:15,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:16:15,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:16:15,375 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:15,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:16:15,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854846603] [2022-01-18 12:16:15,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854846603] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:16:15,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744082833] [2022-01-18 12:16:15,376 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:16:15,376 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:16:15,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:16:15,377 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:16:15,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-01-18 12:16:15,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:16:15,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:16:15,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:16:15,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:15,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:16:16,259 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:16,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744082833] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:16:16,260 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:16:16,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:16:16,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652725974] [2022-01-18 12:16:16,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:16:16,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:16:16,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:16:16,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:16:16,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1253, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:16:16,261 INFO L87 Difference]: Start difference. First operand 1595 states and 4379 transitions. Second operand has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:18,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:16:18,990 INFO L93 Difference]: Finished difference Result 3114 states and 8114 transitions. [2022-01-18 12:16:18,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-01-18 12:16:18,990 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:16:18,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:16:18,996 INFO L225 Difference]: With dead ends: 3114 [2022-01-18 12:16:18,996 INFO L226 Difference]: Without dead ends: 3012 [2022-01-18 12:16:18,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3526 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1370, Invalid=10186, Unknown=0, NotChecked=0, Total=11556 [2022-01-18 12:16:18,997 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 1081 mSDsluCounter, 4514 mSDsCounter, 0 mSdLazyCounter, 2058 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1081 SdHoareTripleChecker+Valid, 4510 SdHoareTripleChecker+Invalid, 2172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 12:16:18,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1081 Valid, 4510 Invalid, 2172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 2058 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 12:16:19,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3012 states. [2022-01-18 12:16:19,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3012 to 1619. [2022-01-18 12:16:19,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1619 states, 1618 states have (on average 2.754635352286774) internal successors, (4457), 1618 states have internal predecessors, (4457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:19,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1619 states to 1619 states and 4457 transitions. [2022-01-18 12:16:19,024 INFO L78 Accepts]: Start accepts. Automaton has 1619 states and 4457 transitions. Word has length 72 [2022-01-18 12:16:19,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:16:19,025 INFO L470 AbstractCegarLoop]: Abstraction has 1619 states and 4457 transitions. [2022-01-18 12:16:19,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:19,025 INFO L276 IsEmpty]: Start isEmpty. Operand 1619 states and 4457 transitions. [2022-01-18 12:16:19,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:16:19,027 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:16:19,027 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:16:19,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2022-01-18 12:16:19,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:16:19,239 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:16:19,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:16:19,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1378452887, now seen corresponding path program 44 times [2022-01-18 12:16:19,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:16:19,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431297107] [2022-01-18 12:16:19,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:16:19,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:16:19,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:16:19,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:19,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:16:19,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431297107] [2022-01-18 12:16:19,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431297107] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:16:19,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758416310] [2022-01-18 12:16:19,439 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:16:19,440 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:16:19,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:16:19,440 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:16:19,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-01-18 12:16:19,514 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:16:19,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:16:19,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:16:19,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:16:19,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:19,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:16:20,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:20,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758416310] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:16:20,350 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:16:20,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:16:20,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687388554] [2022-01-18 12:16:20,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:16:20,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:16:20,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:16:20,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:16:20,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1248, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:16:20,351 INFO L87 Difference]: Start difference. First operand 1619 states and 4457 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:22,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:16:22,712 INFO L93 Difference]: Finished difference Result 2974 states and 7844 transitions. [2022-01-18 12:16:22,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-01-18 12:16:22,712 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:16:22,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:16:22,716 INFO L225 Difference]: With dead ends: 2974 [2022-01-18 12:16:22,716 INFO L226 Difference]: Without dead ends: 2842 [2022-01-18 12:16:22,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2808 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1098, Invalid=8408, Unknown=0, NotChecked=0, Total=9506 [2022-01-18 12:16:22,716 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 942 mSDsluCounter, 3810 mSDsCounter, 0 mSdLazyCounter, 1652 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 3864 SdHoareTripleChecker+Invalid, 1771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:16:22,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [942 Valid, 3864 Invalid, 1771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1652 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 12:16:22,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2022-01-18 12:16:22,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1599. [2022-01-18 12:16:22,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1599 states, 1598 states have (on average 2.74468085106383) internal successors, (4386), 1598 states have internal predecessors, (4386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:22,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1599 states to 1599 states and 4386 transitions. [2022-01-18 12:16:22,737 INFO L78 Accepts]: Start accepts. Automaton has 1599 states and 4386 transitions. Word has length 72 [2022-01-18 12:16:22,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:16:22,737 INFO L470 AbstractCegarLoop]: Abstraction has 1599 states and 4386 transitions. [2022-01-18 12:16:22,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:22,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1599 states and 4386 transitions. [2022-01-18 12:16:22,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:16:22,739 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:16:22,739 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:16:22,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-01-18 12:16:22,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2022-01-18 12:16:22,939 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:16:22,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:16:22,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1117449257, now seen corresponding path program 45 times [2022-01-18 12:16:22,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:16:22,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407882182] [2022-01-18 12:16:22,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:16:22,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:16:22,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:16:23,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:23,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:16:23,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407882182] [2022-01-18 12:16:23,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407882182] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:16:23,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463483869] [2022-01-18 12:16:23,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:16:23,140 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:16:23,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:16:23,141 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:16:23,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-01-18 12:16:23,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 12:16:23,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:16:23,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:16:23,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:16:23,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:23,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:16:24,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:24,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463483869] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:16:24,063 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:16:24,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:16:24,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278619558] [2022-01-18 12:16:24,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:16:24,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:16:24,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:16:24,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:16:24,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1264, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:16:24,064 INFO L87 Difference]: Start difference. First operand 1599 states and 4386 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:26,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:16:26,417 INFO L93 Difference]: Finished difference Result 2965 states and 7805 transitions. [2022-01-18 12:16:26,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-18 12:16:26,417 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:16:26,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:16:26,421 INFO L225 Difference]: With dead ends: 2965 [2022-01-18 12:16:26,421 INFO L226 Difference]: Without dead ends: 2818 [2022-01-18 12:16:26,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3010 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=997, Invalid=9305, Unknown=0, NotChecked=0, Total=10302 [2022-01-18 12:16:26,422 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 947 mSDsluCounter, 3370 mSDsCounter, 0 mSdLazyCounter, 1382 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 947 SdHoareTripleChecker+Valid, 3429 SdHoareTripleChecker+Invalid, 1486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:16:26,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [947 Valid, 3429 Invalid, 1486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1382 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:16:26,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2818 states. [2022-01-18 12:16:26,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2818 to 1615. [2022-01-18 12:16:26,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1615 states, 1614 states have (on average 2.7472118959107807) internal successors, (4434), 1614 states have internal predecessors, (4434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:26,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 4434 transitions. [2022-01-18 12:16:26,447 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 4434 transitions. Word has length 72 [2022-01-18 12:16:26,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:16:26,447 INFO L470 AbstractCegarLoop]: Abstraction has 1615 states and 4434 transitions. [2022-01-18 12:16:26,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:26,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 4434 transitions. [2022-01-18 12:16:26,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:16:26,449 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:16:26,449 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:16:26,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-01-18 12:16:26,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:16:26,649 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:16:26,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:16:26,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1557945783, now seen corresponding path program 46 times [2022-01-18 12:16:26,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:16:26,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205133443] [2022-01-18 12:16:26,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:16:26,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:16:26,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:16:26,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:26,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:16:26,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205133443] [2022-01-18 12:16:26,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205133443] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:16:26,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029552582] [2022-01-18 12:16:26,869 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:16:26,869 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:16:26,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:16:26,870 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:16:26,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-01-18 12:16:26,943 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:16:26,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:16:26,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:16:26,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:16:27,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:27,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:16:27,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:27,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029552582] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:16:27,804 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:16:27,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:16:27,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937989609] [2022-01-18 12:16:27,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:16:27,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:16:27,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:16:27,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:16:27,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1254, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:16:27,805 INFO L87 Difference]: Start difference. First operand 1615 states and 4434 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:30,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:16:30,694 INFO L93 Difference]: Finished difference Result 3317 states and 8697 transitions. [2022-01-18 12:16:30,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-01-18 12:16:30,694 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:16:30,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:16:30,698 INFO L225 Difference]: With dead ends: 3317 [2022-01-18 12:16:30,698 INFO L226 Difference]: Without dead ends: 3170 [2022-01-18 12:16:30,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3783 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1338, Invalid=11094, Unknown=0, NotChecked=0, Total=12432 [2022-01-18 12:16:30,699 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 1144 mSDsluCounter, 4597 mSDsCounter, 0 mSdLazyCounter, 2052 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1144 SdHoareTripleChecker+Valid, 4600 SdHoareTripleChecker+Invalid, 2174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 2052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 12:16:30,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1144 Valid, 4600 Invalid, 2174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 2052 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 12:16:30,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3170 states. [2022-01-18 12:16:30,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3170 to 1615. [2022-01-18 12:16:30,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1615 states, 1614 states have (on average 2.7496902106567536) internal successors, (4438), 1614 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:30,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 4438 transitions. [2022-01-18 12:16:30,723 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 4438 transitions. Word has length 72 [2022-01-18 12:16:30,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:16:30,724 INFO L470 AbstractCegarLoop]: Abstraction has 1615 states and 4438 transitions. [2022-01-18 12:16:30,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:30,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 4438 transitions. [2022-01-18 12:16:30,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:16:30,725 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:16:30,725 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:16:30,741 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2022-01-18 12:16:30,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:16:30,927 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:16:30,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:16:30,927 INFO L85 PathProgramCache]: Analyzing trace with hash 531059937, now seen corresponding path program 47 times [2022-01-18 12:16:30,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:16:30,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732364448] [2022-01-18 12:16:30,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:16:30,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:16:30,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:16:31,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:31,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:16:31,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732364448] [2022-01-18 12:16:31,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732364448] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:16:31,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728588485] [2022-01-18 12:16:31,133 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:16:31,133 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:16:31,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:16:31,134 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:16:31,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-01-18 12:16:31,217 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 12:16:31,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:16:31,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:16:31,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:16:31,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:31,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:16:32,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:32,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728588485] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:16:32,051 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:16:32,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:16:32,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891728456] [2022-01-18 12:16:32,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:16:32,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:16:32,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:16:32,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:16:32,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1257, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:16:32,052 INFO L87 Difference]: Start difference. First operand 1615 states and 4438 transitions. Second operand has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:34,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:16:34,207 INFO L93 Difference]: Finished difference Result 2970 states and 7818 transitions. [2022-01-18 12:16:34,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-01-18 12:16:34,208 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:16:34,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:16:34,212 INFO L225 Difference]: With dead ends: 2970 [2022-01-18 12:16:34,212 INFO L226 Difference]: Without dead ends: 2868 [2022-01-18 12:16:34,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2615 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1064, Invalid=8248, Unknown=0, NotChecked=0, Total=9312 [2022-01-18 12:16:34,213 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 1003 mSDsluCounter, 3327 mSDsCounter, 0 mSdLazyCounter, 1546 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1003 SdHoareTripleChecker+Valid, 3366 SdHoareTripleChecker+Invalid, 1654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:16:34,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1003 Valid, 3366 Invalid, 1654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1546 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:16:34,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2868 states. [2022-01-18 12:16:34,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2868 to 1591. [2022-01-18 12:16:34,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1591 states, 1590 states have (on average 2.7446540880503143) internal successors, (4364), 1590 states have internal predecessors, (4364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:34,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1591 states to 1591 states and 4364 transitions. [2022-01-18 12:16:34,236 INFO L78 Accepts]: Start accepts. Automaton has 1591 states and 4364 transitions. Word has length 72 [2022-01-18 12:16:34,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:16:34,236 INFO L470 AbstractCegarLoop]: Abstraction has 1591 states and 4364 transitions. [2022-01-18 12:16:34,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:34,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1591 states and 4364 transitions. [2022-01-18 12:16:34,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:16:34,238 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:16:34,238 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:16:34,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-01-18 12:16:34,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2022-01-18 12:16:34,439 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:16:34,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:16:34,439 INFO L85 PathProgramCache]: Analyzing trace with hash -2026002579, now seen corresponding path program 48 times [2022-01-18 12:16:34,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:16:34,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254153704] [2022-01-18 12:16:34,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:16:34,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:16:34,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:16:34,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:34,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:16:34,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254153704] [2022-01-18 12:16:34,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254153704] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:16:34,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458503848] [2022-01-18 12:16:34,621 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:16:34,621 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:16:34,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:16:34,622 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:16:34,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-01-18 12:16:34,697 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 12:16:34,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:16:34,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:16:34,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:16:35,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:35,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:16:35,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:35,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458503848] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:16:35,536 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:16:35,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:16:35,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310220479] [2022-01-18 12:16:35,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:16:35,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:16:35,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:16:35,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:16:35,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1263, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:16:35,537 INFO L87 Difference]: Start difference. First operand 1591 states and 4364 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:38,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:16:38,142 INFO L93 Difference]: Finished difference Result 3141 states and 8276 transitions. [2022-01-18 12:16:38,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-01-18 12:16:38,142 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:16:38,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:16:38,146 INFO L225 Difference]: With dead ends: 3141 [2022-01-18 12:16:38,147 INFO L226 Difference]: Without dead ends: 2979 [2022-01-18 12:16:38,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3942 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1292, Invalid=11364, Unknown=0, NotChecked=0, Total=12656 [2022-01-18 12:16:38,148 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 1152 mSDsluCounter, 3693 mSDsCounter, 0 mSdLazyCounter, 1610 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1152 SdHoareTripleChecker+Valid, 3745 SdHoareTripleChecker+Invalid, 1721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:16:38,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1152 Valid, 3745 Invalid, 1721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1610 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 12:16:38,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2979 states. [2022-01-18 12:16:38,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2979 to 1615. [2022-01-18 12:16:38,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1615 states, 1614 states have (on average 2.7496902106567536) internal successors, (4438), 1614 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:38,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 4438 transitions. [2022-01-18 12:16:38,183 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 4438 transitions. Word has length 72 [2022-01-18 12:16:38,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:16:38,183 INFO L470 AbstractCegarLoop]: Abstraction has 1615 states and 4438 transitions. [2022-01-18 12:16:38,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:38,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 4438 transitions. [2022-01-18 12:16:38,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:16:38,185 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:16:38,185 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:16:38,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2022-01-18 12:16:38,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:16:38,385 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:16:38,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:16:38,386 INFO L85 PathProgramCache]: Analyzing trace with hash 649392461, now seen corresponding path program 49 times [2022-01-18 12:16:38,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:16:38,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484094611] [2022-01-18 12:16:38,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:16:38,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:16:38,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:16:38,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:38,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:16:38,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484094611] [2022-01-18 12:16:38,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484094611] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:16:38,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971644682] [2022-01-18 12:16:38,576 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:16:38,576 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:16:38,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:16:38,577 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:16:38,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-01-18 12:16:38,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:16:38,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:16:38,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:16:39,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:39,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:16:39,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:39,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971644682] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:16:39,485 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:16:39,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:16:39,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162927575] [2022-01-18 12:16:39,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:16:39,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:16:39,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:16:39,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:16:39,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1249, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:16:39,486 INFO L87 Difference]: Start difference. First operand 1615 states and 4438 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:42,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:16:42,794 INFO L93 Difference]: Finished difference Result 3402 states and 8932 transitions. [2022-01-18 12:16:42,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-01-18 12:16:42,794 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:16:42,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:16:42,799 INFO L225 Difference]: With dead ends: 3402 [2022-01-18 12:16:42,799 INFO L226 Difference]: Without dead ends: 3270 [2022-01-18 12:16:42,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5169 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1734, Invalid=14016, Unknown=0, NotChecked=0, Total=15750 [2022-01-18 12:16:42,801 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 1111 mSDsluCounter, 4748 mSDsCounter, 0 mSdLazyCounter, 2110 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1111 SdHoareTripleChecker+Valid, 4748 SdHoareTripleChecker+Invalid, 2215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 2110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 12:16:42,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1111 Valid, 4748 Invalid, 2215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 2110 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 12:16:42,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3270 states. [2022-01-18 12:16:42,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3270 to 1615. [2022-01-18 12:16:42,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1615 states, 1614 states have (on average 2.752168525402726) internal successors, (4442), 1614 states have internal predecessors, (4442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:42,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 4442 transitions. [2022-01-18 12:16:42,828 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 4442 transitions. Word has length 72 [2022-01-18 12:16:42,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:16:42,828 INFO L470 AbstractCegarLoop]: Abstraction has 1615 states and 4442 transitions. [2022-01-18 12:16:42,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:42,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 4442 transitions. [2022-01-18 12:16:42,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:16:42,830 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:16:42,830 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:16:42,845 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2022-01-18 12:16:43,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:16:43,031 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:16:43,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:16:43,031 INFO L85 PathProgramCache]: Analyzing trace with hash -377493385, now seen corresponding path program 50 times [2022-01-18 12:16:43,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:16:43,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940470861] [2022-01-18 12:16:43,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:16:43,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:16:43,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:16:43,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:43,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:16:43,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940470861] [2022-01-18 12:16:43,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940470861] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:16:43,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940300822] [2022-01-18 12:16:43,214 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:16:43,214 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:16:43,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:16:43,215 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:16:43,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-01-18 12:16:43,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:16:43,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:16:43,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:16:43,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:16:43,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:43,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:16:44,171 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:44,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940300822] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:16:44,171 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:16:44,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:16:44,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689934250] [2022-01-18 12:16:44,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:16:44,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:16:44,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:16:44,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:16:44,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1244, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:16:44,172 INFO L87 Difference]: Start difference. First operand 1615 states and 4442 transitions. Second operand has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:46,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:16:46,321 INFO L93 Difference]: Finished difference Result 2948 states and 7773 transitions. [2022-01-18 12:16:46,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-01-18 12:16:46,321 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:16:46,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:16:46,335 INFO L225 Difference]: With dead ends: 2948 [2022-01-18 12:16:46,335 INFO L226 Difference]: Without dead ends: 2846 [2022-01-18 12:16:46,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2575 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1111, Invalid=7819, Unknown=0, NotChecked=0, Total=8930 [2022-01-18 12:16:46,336 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 960 mSDsluCounter, 3890 mSDsCounter, 0 mSdLazyCounter, 1809 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 960 SdHoareTripleChecker+Valid, 3907 SdHoareTripleChecker+Invalid, 1892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:16:46,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [960 Valid, 3907 Invalid, 1892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1809 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 12:16:46,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2846 states. [2022-01-18 12:16:46,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2846 to 1583. [2022-01-18 12:16:46,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1583 states, 1582 states have (on average 2.7446270543615676) internal successors, (4342), 1582 states have internal predecessors, (4342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:46,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 4342 transitions. [2022-01-18 12:16:46,358 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 4342 transitions. Word has length 72 [2022-01-18 12:16:46,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:16:46,358 INFO L470 AbstractCegarLoop]: Abstraction has 1583 states and 4342 transitions. [2022-01-18 12:16:46,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:46,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 4342 transitions. [2022-01-18 12:16:46,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:16:46,361 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:16:46,361 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:16:46,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-01-18 12:16:46,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:16:46,561 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:16:46,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:16:46,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1577988827, now seen corresponding path program 51 times [2022-01-18 12:16:46,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:16:46,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872327348] [2022-01-18 12:16:46,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:16:46,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:16:46,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:16:46,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:46,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:16:46,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872327348] [2022-01-18 12:16:46,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872327348] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:16:46,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971173927] [2022-01-18 12:16:46,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:16:46,758 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:16:46,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:16:46,759 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:16:46,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-01-18 12:16:46,839 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 12:16:46,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:16:46,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:16:46,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:16:47,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:47,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:16:47,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:47,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971173927] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:16:47,662 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:16:47,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:16:47,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714443111] [2022-01-18 12:16:47,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:16:47,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:16:47,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:16:47,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:16:47,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1256, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:16:47,663 INFO L87 Difference]: Start difference. First operand 1583 states and 4342 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:51,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:16:51,016 INFO L93 Difference]: Finished difference Result 3443 states and 9061 transitions. [2022-01-18 12:16:51,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-01-18 12:16:51,016 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:16:51,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:16:51,021 INFO L225 Difference]: With dead ends: 3443 [2022-01-18 12:16:51,021 INFO L226 Difference]: Without dead ends: 3281 [2022-01-18 12:16:51,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5412 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1591, Invalid=14411, Unknown=0, NotChecked=0, Total=16002 [2022-01-18 12:16:51,023 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 1305 mSDsluCounter, 3689 mSDsCounter, 0 mSdLazyCounter, 1648 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1305 SdHoareTripleChecker+Valid, 3729 SdHoareTripleChecker+Invalid, 1777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:16:51,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1305 Valid, 3729 Invalid, 1777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1648 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 12:16:51,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3281 states. [2022-01-18 12:16:51,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3281 to 1619. [2022-01-18 12:16:51,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1619 states, 1618 states have (on average 2.754635352286774) internal successors, (4457), 1618 states have internal predecessors, (4457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:51,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1619 states to 1619 states and 4457 transitions. [2022-01-18 12:16:51,050 INFO L78 Accepts]: Start accepts. Automaton has 1619 states and 4457 transitions. Word has length 72 [2022-01-18 12:16:51,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:16:51,050 INFO L470 AbstractCegarLoop]: Abstraction has 1619 states and 4457 transitions. [2022-01-18 12:16:51,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:51,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1619 states and 4457 transitions. [2022-01-18 12:16:51,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:16:51,052 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:16:51,052 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:16:51,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-01-18 12:16:51,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2022-01-18 12:16:51,253 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:16:51,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:16:51,253 INFO L85 PathProgramCache]: Analyzing trace with hash -41583429, now seen corresponding path program 52 times [2022-01-18 12:16:51,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:16:51,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923370834] [2022-01-18 12:16:51,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:16:51,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:16:51,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:16:51,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:51,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:16:51,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923370834] [2022-01-18 12:16:51,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923370834] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:16:51,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204160706] [2022-01-18 12:16:51,458 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:16:51,458 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:16:51,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:16:51,459 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:16:51,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-01-18 12:16:51,542 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:16:51,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:16:51,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:16:51,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:16:51,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:51,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:16:52,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:52,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204160706] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:16:52,380 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:16:52,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:16:52,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993550943] [2022-01-18 12:16:52,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:16:52,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:16:52,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:16:52,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:16:52,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1245, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:16:52,381 INFO L87 Difference]: Start difference. First operand 1619 states and 4457 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:56,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:16:56,279 INFO L93 Difference]: Finished difference Result 3890 states and 10167 transitions. [2022-01-18 12:16:56,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2022-01-18 12:16:56,279 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:16:56,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:16:56,284 INFO L225 Difference]: With dead ends: 3890 [2022-01-18 12:16:56,284 INFO L226 Difference]: Without dead ends: 3758 [2022-01-18 12:16:56,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6984 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=2142, Invalid=17598, Unknown=0, NotChecked=0, Total=19740 [2022-01-18 12:16:56,286 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 1510 mSDsluCounter, 4211 mSDsCounter, 0 mSdLazyCounter, 1962 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 4214 SdHoareTripleChecker+Invalid, 2100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 12:16:56,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1510 Valid, 4214 Invalid, 2100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1962 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 12:16:56,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3758 states. [2022-01-18 12:16:56,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3758 to 1619. [2022-01-18 12:16:56,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1619 states, 1618 states have (on average 2.7571075401730534) internal successors, (4461), 1618 states have internal predecessors, (4461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:56,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1619 states to 1619 states and 4461 transitions. [2022-01-18 12:16:56,314 INFO L78 Accepts]: Start accepts. Automaton has 1619 states and 4461 transitions. Word has length 72 [2022-01-18 12:16:56,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:16:56,314 INFO L470 AbstractCegarLoop]: Abstraction has 1619 states and 4461 transitions. [2022-01-18 12:16:56,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:56,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1619 states and 4461 transitions. [2022-01-18 12:16:56,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:16:56,316 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:16:56,316 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:16:56,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2022-01-18 12:16:56,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2022-01-18 12:16:56,532 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:16:56,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:16:56,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1068469275, now seen corresponding path program 53 times [2022-01-18 12:16:56,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:16:56,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397892453] [2022-01-18 12:16:56,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:16:56,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:16:56,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:16:56,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:56,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:16:56,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397892453] [2022-01-18 12:16:56,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397892453] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:16:56,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152950909] [2022-01-18 12:16:56,707 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:16:56,707 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:16:56,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:16:56,708 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:16:56,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-01-18 12:16:56,789 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 12:16:56,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:16:56,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:16:56,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:16:57,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:57,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:16:57,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:57,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152950909] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:16:57,606 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:16:57,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:16:57,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801672114] [2022-01-18 12:16:57,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:16:57,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:16:57,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:16:57,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:16:57,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1240, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:16:57,607 INFO L87 Difference]: Start difference. First operand 1619 states and 4461 transitions. Second operand has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:17:00,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:17:00,146 INFO L93 Difference]: Finished difference Result 3596 states and 9476 transitions. [2022-01-18 12:17:00,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-01-18 12:17:00,146 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:17:00,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:17:00,151 INFO L225 Difference]: With dead ends: 3596 [2022-01-18 12:17:00,151 INFO L226 Difference]: Without dead ends: 3494 [2022-01-18 12:17:00,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3595 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1438, Invalid=9904, Unknown=0, NotChecked=0, Total=11342 [2022-01-18 12:17:00,152 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 1213 mSDsluCounter, 3619 mSDsCounter, 0 mSdLazyCounter, 1689 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1213 SdHoareTripleChecker+Valid, 3629 SdHoareTripleChecker+Invalid, 1788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:17:00,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1213 Valid, 3629 Invalid, 1788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1689 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 12:17:00,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3494 states. [2022-01-18 12:17:00,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3494 to 1587. [2022-01-18 12:17:00,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1587 states, 1586 states have (on average 2.7471626733921815) internal successors, (4357), 1586 states have internal predecessors, (4357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:17:00,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 4357 transitions. [2022-01-18 12:17:00,178 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 4357 transitions. Word has length 72 [2022-01-18 12:17:00,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:17:00,178 INFO L470 AbstractCegarLoop]: Abstraction has 1587 states and 4357 transitions. [2022-01-18 12:17:00,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:17:00,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 4357 transitions. [2022-01-18 12:17:00,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:17:00,180 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:17:00,180 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:17:00,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2022-01-18 12:17:00,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2022-01-18 12:17:00,395 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:17:00,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:17:00,396 INFO L85 PathProgramCache]: Analyzing trace with hash 42818903, now seen corresponding path program 54 times [2022-01-18 12:17:00,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:17:00,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095904170] [2022-01-18 12:17:00,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:17:00,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:17:00,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:17:00,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:17:00,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:17:00,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095904170] [2022-01-18 12:17:00,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095904170] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:17:00,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057184425] [2022-01-18 12:17:00,568 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:17:00,569 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:17:00,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:17:00,570 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:17:00,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-01-18 12:17:00,647 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 12:17:00,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:17:00,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 12:17:00,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:17:01,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:17:01,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:17:01,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:17:01,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057184425] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:17:01,578 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:17:01,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 41 [2022-01-18 12:17:01,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304541877] [2022-01-18 12:17:01,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:17:01,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 12:17:01,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:17:01,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 12:17:01,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=1398, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 12:17:01,579 INFO L87 Difference]: Start difference. First operand 1587 states and 4357 transitions. Second operand has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:17:02,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:17:02,719 INFO L93 Difference]: Finished difference Result 2399 states and 6403 transitions. [2022-01-18 12:17:02,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 12:17:02,720 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:17:02,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:17:02,723 INFO L225 Difference]: With dead ends: 2399 [2022-01-18 12:17:02,723 INFO L226 Difference]: Without dead ends: 2273 [2022-01-18 12:17:02,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1183 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=765, Invalid=4347, Unknown=0, NotChecked=0, Total=5112 [2022-01-18 12:17:02,724 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 666 mSDsluCounter, 3305 mSDsCounter, 0 mSdLazyCounter, 1343 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 3324 SdHoareTripleChecker+Invalid, 1415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:17:02,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [666 Valid, 3324 Invalid, 1415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1343 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:17:02,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2273 states. [2022-01-18 12:17:02,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2273 to 1587. [2022-01-18 12:17:02,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1587 states, 1586 states have (on average 2.7471626733921815) internal successors, (4357), 1586 states have internal predecessors, (4357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:17:02,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 4357 transitions. [2022-01-18 12:17:02,744 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 4357 transitions. Word has length 72 [2022-01-18 12:17:02,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:17:02,744 INFO L470 AbstractCegarLoop]: Abstraction has 1587 states and 4357 transitions. [2022-01-18 12:17:02,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:17:02,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 4357 transitions. [2022-01-18 12:17:02,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:17:02,746 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:17:02,746 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:17:02,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2022-01-18 12:17:02,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2022-01-18 12:17:02,947 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:17:02,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:17:02,947 INFO L85 PathProgramCache]: Analyzing trace with hash 603378837, now seen corresponding path program 29 times [2022-01-18 12:17:02,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:17:02,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312498517] [2022-01-18 12:17:02,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:17:02,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:17:02,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:17:03,173 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:17:03,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:17:03,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312498517] [2022-01-18 12:17:03,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312498517] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:17:03,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51409238] [2022-01-18 12:17:03,173 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:17:03,173 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:17:03,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:17:03,174 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:17:03,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-01-18 12:17:03,253 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 12:17:03,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:17:03,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 12:17:03,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:17:03,791 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:17:03,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:17:04,314 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:17:04,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51409238] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:17:04,314 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:17:04,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 45 [2022-01-18 12:17:04,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528063667] [2022-01-18 12:17:04,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:17:04,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-18 12:17:04,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:17:04,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-18 12:17:04,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1790, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 12:17:04,315 INFO L87 Difference]: Start difference. First operand 1587 states and 4357 transitions. Second operand has 45 states, 45 states have (on average 3.3333333333333335) internal successors, (150), 45 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:17:09,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:17:09,785 INFO L93 Difference]: Finished difference Result 4209 states and 10994 transitions. [2022-01-18 12:17:09,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2022-01-18 12:17:09,785 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.3333333333333335) internal successors, (150), 45 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:17:09,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:17:09,791 INFO L225 Difference]: With dead ends: 4209 [2022-01-18 12:17:09,791 INFO L226 Difference]: Without dead ends: 4107 [2022-01-18 12:17:09,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10355 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=2875, Invalid=26537, Unknown=0, NotChecked=0, Total=29412 [2022-01-18 12:17:09,793 INFO L933 BasicCegarLoop]: 307 mSDtfsCounter, 1398 mSDsluCounter, 5573 mSDsCounter, 0 mSdLazyCounter, 2563 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1398 SdHoareTripleChecker+Valid, 5606 SdHoareTripleChecker+Invalid, 2732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 2563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 12:17:09,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1398 Valid, 5606 Invalid, 2732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 2563 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 12:17:09,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4107 states. [2022-01-18 12:17:09,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4107 to 1603. [2022-01-18 12:17:09,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1603 states, 1602 states have (on average 2.762172284644195) internal successors, (4425), 1602 states have internal predecessors, (4425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:17:09,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1603 states to 1603 states and 4425 transitions. [2022-01-18 12:17:09,825 INFO L78 Accepts]: Start accepts. Automaton has 1603 states and 4425 transitions. Word has length 72 [2022-01-18 12:17:09,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:17:09,825 INFO L470 AbstractCegarLoop]: Abstraction has 1603 states and 4425 transitions. [2022-01-18 12:17:09,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.3333333333333335) internal successors, (150), 45 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:17:09,825 INFO L276 IsEmpty]: Start isEmpty. Operand 1603 states and 4425 transitions. [2022-01-18 12:17:09,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:17:09,827 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:17:09,827 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:17:09,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2022-01-18 12:17:10,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:17:10,034 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:17:10,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:17:10,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1829604417, now seen corresponding path program 55 times [2022-01-18 12:17:10,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:17:10,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785783162] [2022-01-18 12:17:10,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:17:10,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:17:10,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:17:10,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:17:10,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:17:10,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785783162] [2022-01-18 12:17:10,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785783162] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:17:10,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563370333] [2022-01-18 12:17:10,203 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:17:10,203 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:17:10,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:17:10,204 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:17:10,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-01-18 12:17:10,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:17:10,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:17:10,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:17:10,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:17:10,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:17:11,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:17:11,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563370333] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:17:11,080 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:17:11,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:17:11,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77361387] [2022-01-18 12:17:11,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:17:11,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:17:11,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:17:11,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:17:11,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1255, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:17:11,081 INFO L87 Difference]: Start difference. First operand 1603 states and 4425 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:17:13,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:17:13,768 INFO L93 Difference]: Finished difference Result 3310 states and 8642 transitions. [2022-01-18 12:17:13,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-01-18 12:17:13,769 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:17:13,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:17:13,773 INFO L225 Difference]: With dead ends: 3310 [2022-01-18 12:17:13,773 INFO L226 Difference]: Without dead ends: 3133 [2022-01-18 12:17:13,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3598 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1230, Invalid=10326, Unknown=0, NotChecked=0, Total=11556 [2022-01-18 12:17:13,774 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 1105 mSDsluCounter, 4404 mSDsCounter, 0 mSdLazyCounter, 1692 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 4361 SdHoareTripleChecker+Invalid, 1800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:17:13,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1105 Valid, 4361 Invalid, 1800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1692 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 12:17:13,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3133 states. [2022-01-18 12:17:13,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3133 to 1631. [2022-01-18 12:17:13,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 1630 states have (on average 2.78159509202454) internal successors, (4534), 1630 states have internal predecessors, (4534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:17:13,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 4534 transitions. [2022-01-18 12:17:13,799 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 4534 transitions. Word has length 72 [2022-01-18 12:17:13,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:17:13,799 INFO L470 AbstractCegarLoop]: Abstraction has 1631 states and 4534 transitions. [2022-01-18 12:17:13,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:17:13,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 4534 transitions. [2022-01-18 12:17:13,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:17:13,801 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:17:13,802 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:17:13,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2022-01-18 12:17:14,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:17:14,002 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:17:14,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:17:14,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1366429335, now seen corresponding path program 56 times [2022-01-18 12:17:14,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:17:14,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938453467] [2022-01-18 12:17:14,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:17:14,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:17:14,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:17:14,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:17:14,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:17:14,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938453467] [2022-01-18 12:17:14,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938453467] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:17:14,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938712664] [2022-01-18 12:17:14,174 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:17:14,174 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:17:14,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:17:14,176 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:17:14,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-01-18 12:17:14,253 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:17:14,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:17:14,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:17:14,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:17:14,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:17:14,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:17:15,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:17:15,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938712664] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:17:15,042 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:17:15,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:17:15,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39199164] [2022-01-18 12:17:15,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:17:15,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:17:15,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:17:15,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:17:15,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1260, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:17:15,043 INFO L87 Difference]: Start difference. First operand 1631 states and 4534 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:17:19,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:17:19,644 INFO L93 Difference]: Finished difference Result 4000 states and 10489 transitions. [2022-01-18 12:17:19,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2022-01-18 12:17:19,645 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:17:19,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:17:19,650 INFO L225 Difference]: With dead ends: 4000 [2022-01-18 12:17:19,650 INFO L226 Difference]: Without dead ends: 3838 [2022-01-18 12:17:19,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8293 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=2280, Invalid=20370, Unknown=0, NotChecked=0, Total=22650 [2022-01-18 12:17:19,651 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 1628 mSDsluCounter, 4785 mSDsCounter, 0 mSdLazyCounter, 2173 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1628 SdHoareTripleChecker+Valid, 4753 SdHoareTripleChecker+Invalid, 2363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 2173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 12:17:19,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1628 Valid, 4753 Invalid, 2363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 2173 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 12:17:19,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3838 states. [2022-01-18 12:17:19,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3838 to 1643. [2022-01-18 12:17:19,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1643 states, 1642 states have (on average 2.78136419001218) internal successors, (4567), 1642 states have internal predecessors, (4567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:17:19,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1643 states to 1643 states and 4567 transitions. [2022-01-18 12:17:19,680 INFO L78 Accepts]: Start accepts. Automaton has 1643 states and 4567 transitions. Word has length 72 [2022-01-18 12:17:19,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:17:19,680 INFO L470 AbstractCegarLoop]: Abstraction has 1643 states and 4567 transitions. [2022-01-18 12:17:19,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:17:19,680 INFO L276 IsEmpty]: Start isEmpty. Operand 1643 states and 4567 transitions. [2022-01-18 12:17:19,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:17:19,682 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:17:19,682 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:17:19,701 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2022-01-18 12:17:19,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:17:19,898 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:17:19,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:17:19,898 INFO L85 PathProgramCache]: Analyzing trace with hash 282079859, now seen corresponding path program 57 times [2022-01-18 12:17:19,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:17:19,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834874286] [2022-01-18 12:17:19,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:17:19,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:17:19,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:17:20,078 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:17:20,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:17:20,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834874286] [2022-01-18 12:17:20,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834874286] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:17:20,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9640159] [2022-01-18 12:17:20,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:17:20,079 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:17:20,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:17:20,080 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:17:20,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-01-18 12:17:20,160 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 12:17:20,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:17:20,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:17:20,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:17:20,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:17:20,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:17:20,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:17:20,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9640159] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:17:20,947 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:17:20,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:17:20,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473030212] [2022-01-18 12:17:20,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:17:20,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:17:20,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:17:20,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:17:20,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1238, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:17:20,948 INFO L87 Difference]: Start difference. First operand 1643 states and 4567 transitions. Second operand has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:17:23,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:17:23,912 INFO L93 Difference]: Finished difference Result 3539 states and 9216 transitions. [2022-01-18 12:17:23,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-01-18 12:17:23,912 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:17:23,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:17:23,917 INFO L225 Difference]: With dead ends: 3539 [2022-01-18 12:17:23,917 INFO L226 Difference]: Without dead ends: 3437 [2022-01-18 12:17:23,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4613 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1705, Invalid=12337, Unknown=0, NotChecked=0, Total=14042 [2022-01-18 12:17:23,919 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 1744 mSDsluCounter, 4214 mSDsCounter, 0 mSdLazyCounter, 1875 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1744 SdHoareTripleChecker+Valid, 4174 SdHoareTripleChecker+Invalid, 2022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:17:23,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1744 Valid, 4174 Invalid, 2022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1875 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 12:17:23,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3437 states. [2022-01-18 12:17:23,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3437 to 1631. [2022-01-18 12:17:23,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 1630 states have (on average 2.78159509202454) internal successors, (4534), 1630 states have internal predecessors, (4534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:17:23,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 4534 transitions. [2022-01-18 12:17:23,947 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 4534 transitions. Word has length 72 [2022-01-18 12:17:23,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:17:23,947 INFO L470 AbstractCegarLoop]: Abstraction has 1631 states and 4534 transitions. [2022-01-18 12:17:23,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:17:23,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 4534 transitions. [2022-01-18 12:17:23,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:17:23,949 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:17:23,949 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:17:23,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2022-01-18 12:17:24,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:17:24,163 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:17:24,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:17:24,164 INFO L85 PathProgramCache]: Analyzing trace with hash -391793397, now seen corresponding path program 58 times [2022-01-18 12:17:24,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:17:24,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679291782] [2022-01-18 12:17:24,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:17:24,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:17:24,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:17:24,339 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:17:24,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:17:24,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679291782] [2022-01-18 12:17:24,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679291782] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:17:24,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339951029] [2022-01-18 12:17:24,339 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:17:24,339 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:17:24,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:17:24,340 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:17:24,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-01-18 12:17:24,416 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:17:24,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:17:24,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:17:24,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:17:24,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:17:24,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:17:25,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:17:25,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339951029] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:17:25,213 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:17:25,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:17:25,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157733158] [2022-01-18 12:17:25,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:17:25,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:17:25,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:17:25,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:17:25,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1244, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:17:25,214 INFO L87 Difference]: Start difference. First operand 1631 states and 4534 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:17:30,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:17:30,285 INFO L93 Difference]: Finished difference Result 4142 states and 10879 transitions. [2022-01-18 12:17:30,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2022-01-18 12:17:30,286 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:17:30,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:17:30,291 INFO L225 Difference]: With dead ends: 4142 [2022-01-18 12:17:30,291 INFO L226 Difference]: Without dead ends: 4025 [2022-01-18 12:17:30,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9870 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=2936, Invalid=23146, Unknown=0, NotChecked=0, Total=26082 [2022-01-18 12:17:30,292 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 1967 mSDsluCounter, 3987 mSDsCounter, 0 mSdLazyCounter, 1850 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1967 SdHoareTripleChecker+Valid, 3973 SdHoareTripleChecker+Invalid, 2095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 1850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 12:17:30,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1967 Valid, 3973 Invalid, 2095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 1850 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 12:17:30,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4025 states. [2022-01-18 12:17:30,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4025 to 1603. [2022-01-18 12:17:30,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1603 states, 1602 states have (on average 2.774656679151061) internal successors, (4445), 1602 states have internal predecessors, (4445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:17:30,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1603 states to 1603 states and 4445 transitions. [2022-01-18 12:17:30,320 INFO L78 Accepts]: Start accepts. Automaton has 1603 states and 4445 transitions. Word has length 72 [2022-01-18 12:17:30,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:17:30,320 INFO L470 AbstractCegarLoop]: Abstraction has 1603 states and 4445 transitions. [2022-01-18 12:17:30,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:17:30,320 INFO L276 IsEmpty]: Start isEmpty. Operand 1603 states and 4445 transitions. [2022-01-18 12:17:30,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:17:30,322 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:17:30,322 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:17:30,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2022-01-18 12:17:30,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:17:30,522 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:17:30,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:17:30,522 INFO L85 PathProgramCache]: Analyzing trace with hash -357922065, now seen corresponding path program 59 times [2022-01-18 12:17:30,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:17:30,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737594519] [2022-01-18 12:17:30,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:17:30,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:17:30,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:17:30,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:17:30,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:17:30,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737594519] [2022-01-18 12:17:30,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737594519] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:17:30,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067810355] [2022-01-18 12:17:30,679 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:17:30,679 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:17:30,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:17:30,680 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:17:30,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-01-18 12:17:30,760 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:17:30,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:17:30,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 12:17:30,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:17:31,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:17:31,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:17:31,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:17:31,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067810355] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:17:31,689 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:17:31,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 41 [2022-01-18 12:17:31,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484122367] [2022-01-18 12:17:31,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:17:31,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 12:17:31,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:17:31,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 12:17:31,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=1398, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 12:17:31,691 INFO L87 Difference]: Start difference. First operand 1603 states and 4445 transitions. Second operand has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:17:33,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:17:33,004 INFO L93 Difference]: Finished difference Result 2416 states and 6464 transitions. [2022-01-18 12:17:33,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 12:17:33,004 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:17:33,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:17:33,007 INFO L225 Difference]: With dead ends: 2416 [2022-01-18 12:17:33,007 INFO L226 Difference]: Without dead ends: 2275 [2022-01-18 12:17:33,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1518 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=857, Invalid=5305, Unknown=0, NotChecked=0, Total=6162 [2022-01-18 12:17:33,008 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 826 mSDsluCounter, 3790 mSDsCounter, 0 mSdLazyCounter, 1472 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 3772 SdHoareTripleChecker+Invalid, 1559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:17:33,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [826 Valid, 3772 Invalid, 1559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1472 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:17:33,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2275 states. [2022-01-18 12:17:33,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2275 to 1603. [2022-01-18 12:17:33,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1603 states, 1602 states have (on average 2.772159800249688) internal successors, (4441), 1602 states have internal predecessors, (4441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:17:33,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1603 states to 1603 states and 4441 transitions. [2022-01-18 12:17:33,028 INFO L78 Accepts]: Start accepts. Automaton has 1603 states and 4441 transitions. Word has length 72 [2022-01-18 12:17:33,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:17:33,028 INFO L470 AbstractCegarLoop]: Abstraction has 1603 states and 4441 transitions. [2022-01-18 12:17:33,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:17:33,028 INFO L276 IsEmpty]: Start isEmpty. Operand 1603 states and 4441 transitions. [2022-01-18 12:17:33,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:17:33,030 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:17:33,030 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:17:33,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2022-01-18 12:17:33,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable94 [2022-01-18 12:17:33,231 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:17:33,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:17:33,231 INFO L85 PathProgramCache]: Analyzing trace with hash 2099081347, now seen corresponding path program 30 times [2022-01-18 12:17:33,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:17:33,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128060135] [2022-01-18 12:17:33,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:17:33,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:17:33,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:17:33,410 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:17:33,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:17:33,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128060135] [2022-01-18 12:17:33,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128060135] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:17:33,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110457354] [2022-01-18 12:17:33,410 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:17:33,410 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:17:33,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:17:33,411 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:17:33,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-01-18 12:17:33,491 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 12:17:33,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:17:33,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 12:17:33,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:17:34,042 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:17:34,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:17:34,656 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:17:34,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110457354] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:17:34,657 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:17:34,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-01-18 12:17:34,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202631341] [2022-01-18 12:17:34,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:17:34,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 12:17:34,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:17:34,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 12:17:34,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1868, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 12:17:34,658 INFO L87 Difference]: Start difference. First operand 1603 states and 4441 transitions. Second operand has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:17:40,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:17:40,962 INFO L93 Difference]: Finished difference Result 4237 states and 11064 transitions. [2022-01-18 12:17:40,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2022-01-18 12:17:40,962 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:17:40,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:17:40,967 INFO L225 Difference]: With dead ends: 4237 [2022-01-18 12:17:40,967 INFO L226 Difference]: Without dead ends: 4135 [2022-01-18 12:17:40,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12006 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=3347, Invalid=29959, Unknown=0, NotChecked=0, Total=33306 [2022-01-18 12:17:40,969 INFO L933 BasicCegarLoop]: 296 mSDtfsCounter, 1392 mSDsluCounter, 6089 mSDsCounter, 0 mSdLazyCounter, 3006 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1392 SdHoareTripleChecker+Valid, 6133 SdHoareTripleChecker+Invalid, 3168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 3006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:17:40,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1392 Valid, 6133 Invalid, 3168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 3006 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 12:17:40,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4135 states. [2022-01-18 12:17:40,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4135 to 1611. [2022-01-18 12:17:40,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1611 states, 1610 states have (on average 2.7770186335403726) internal successors, (4471), 1610 states have internal predecessors, (4471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:17:40,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1611 states to 1611 states and 4471 transitions. [2022-01-18 12:17:40,994 INFO L78 Accepts]: Start accepts. Automaton has 1611 states and 4471 transitions. Word has length 72 [2022-01-18 12:17:40,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:17:40,995 INFO L470 AbstractCegarLoop]: Abstraction has 1611 states and 4471 transitions. [2022-01-18 12:17:40,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:17:40,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1611 states and 4471 transitions. [2022-01-18 12:17:40,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:17:40,996 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:17:40,997 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:17:41,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2022-01-18 12:17:41,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2022-01-18 12:17:41,198 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:17:41,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:17:41,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1118703179, now seen corresponding path program 31 times [2022-01-18 12:17:41,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:17:41,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337518152] [2022-01-18 12:17:41,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:17:41,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:17:41,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:17:41,377 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:17:41,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:17:41,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337518152] [2022-01-18 12:17:41,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337518152] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:17:41,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395773184] [2022-01-18 12:17:41,377 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:17:41,377 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:17:41,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:17:41,378 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:17:41,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-01-18 12:17:41,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:17:41,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 12:17:41,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:17:42,002 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:17:42,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:17:42,657 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:17:42,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395773184] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:17:42,657 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:17:42,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-01-18 12:17:42,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973912389] [2022-01-18 12:17:42,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:17:42,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 12:17:42,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:17:42,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 12:17:42,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 12:17:42,658 INFO L87 Difference]: Start difference. First operand 1611 states and 4471 transitions. Second operand has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:17:52,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:17:52,078 INFO L93 Difference]: Finished difference Result 5720 states and 15021 transitions. [2022-01-18 12:17:52,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2022-01-18 12:17:52,078 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:17:52,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:17:52,085 INFO L225 Difference]: With dead ends: 5720 [2022-01-18 12:17:52,085 INFO L226 Difference]: Without dead ends: 5618 [2022-01-18 12:17:52,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20591 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=5488, Invalid=47182, Unknown=0, NotChecked=0, Total=52670 [2022-01-18 12:17:52,088 INFO L933 BasicCegarLoop]: 326 mSDtfsCounter, 1739 mSDsluCounter, 6889 mSDsCounter, 0 mSdLazyCounter, 3847 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1739 SdHoareTripleChecker+Valid, 6947 SdHoareTripleChecker+Invalid, 4064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 3847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:17:52,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1739 Valid, 6947 Invalid, 4064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 3847 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 12:17:52,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5618 states. [2022-01-18 12:17:52,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5618 to 1635. [2022-01-18 12:17:52,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1635 states, 1634 states have (on average 2.7937576499388004) internal successors, (4565), 1634 states have internal predecessors, (4565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:17:52,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1635 states to 1635 states and 4565 transitions. [2022-01-18 12:17:52,124 INFO L78 Accepts]: Start accepts. Automaton has 1635 states and 4565 transitions. Word has length 72 [2022-01-18 12:17:52,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:17:52,124 INFO L470 AbstractCegarLoop]: Abstraction has 1635 states and 4565 transitions. [2022-01-18 12:17:52,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:17:52,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1635 states and 4565 transitions. [2022-01-18 12:17:52,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:17:52,126 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:17:52,126 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:17:52,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2022-01-18 12:17:52,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:17:52,327 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:17:52,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:17:52,327 INFO L85 PathProgramCache]: Analyzing trace with hash -52582137, now seen corresponding path program 32 times [2022-01-18 12:17:52,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:17:52,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660878402] [2022-01-18 12:17:52,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:17:52,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:17:52,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:17:52,543 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:17:52,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:17:52,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660878402] [2022-01-18 12:17:52,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660878402] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:17:52,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141145262] [2022-01-18 12:17:52,543 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:17:52,543 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:17:52,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:17:52,544 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:17:52,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-01-18 12:17:52,626 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:17:52,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:17:52,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 12:17:52,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:17:53,222 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:17:53,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:17:53,917 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:17:53,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141145262] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:17:53,917 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:17:53,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-01-18 12:17:53,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921127370] [2022-01-18 12:17:53,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:17:53,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 12:17:53,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:17:53,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 12:17:53,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1885, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 12:17:53,918 INFO L87 Difference]: Start difference. First operand 1635 states and 4565 transitions. Second operand has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:18:06,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:18:06,049 INFO L93 Difference]: Finished difference Result 6525 states and 17134 transitions. [2022-01-18 12:18:06,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2022-01-18 12:18:06,050 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:18:06,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:18:06,059 INFO L225 Difference]: With dead ends: 6525 [2022-01-18 12:18:06,059 INFO L226 Difference]: Without dead ends: 6423 [2022-01-18 12:18:06,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 250 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24868 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=7184, Invalid=56068, Unknown=0, NotChecked=0, Total=63252 [2022-01-18 12:18:06,062 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 1587 mSDsluCounter, 11115 mSDsCounter, 0 mSdLazyCounter, 5582 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1587 SdHoareTripleChecker+Valid, 10999 SdHoareTripleChecker+Invalid, 5840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 5582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-18 12:18:06,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1587 Valid, 10999 Invalid, 5840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 5582 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-18 12:18:06,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6423 states. [2022-01-18 12:18:06,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6423 to 1639. [2022-01-18 12:18:06,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1639 states, 1638 states have (on average 2.796092796092796) internal successors, (4580), 1638 states have internal predecessors, (4580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:18:06,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1639 states to 1639 states and 4580 transitions. [2022-01-18 12:18:06,104 INFO L78 Accepts]: Start accepts. Automaton has 1639 states and 4580 transitions. Word has length 72 [2022-01-18 12:18:06,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:18:06,104 INFO L470 AbstractCegarLoop]: Abstraction has 1639 states and 4580 transitions. [2022-01-18 12:18:06,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:18:06,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1639 states and 4580 transitions. [2022-01-18 12:18:06,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:18:06,106 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:18:06,106 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:18:06,122 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2022-01-18 12:18:06,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:18:06,307 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:18:06,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:18:06,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1087588397, now seen corresponding path program 33 times [2022-01-18 12:18:06,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:18:06,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481979691] [2022-01-18 12:18:06,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:18:06,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:18:06,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:18:06,529 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:18:06,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:18:06,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481979691] [2022-01-18 12:18:06,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481979691] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:18:06,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123530806] [2022-01-18 12:18:06,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:18:06,530 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:18:06,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:18:06,531 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:18:06,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-01-18 12:18:06,613 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 12:18:06,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:18:06,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 12:18:06,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:18:07,186 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:18:07,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:18:07,820 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:18:07,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123530806] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:18:07,821 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:18:07,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-01-18 12:18:07,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675980767] [2022-01-18 12:18:07,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:18:07,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 12:18:07,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:18:07,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 12:18:07,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=1870, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 12:18:07,822 INFO L87 Difference]: Start difference. First operand 1639 states and 4580 transitions. Second operand has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:18:23,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:18:23,771 INFO L93 Difference]: Finished difference Result 6738 states and 17549 transitions. [2022-01-18 12:18:23,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 275 states. [2022-01-18 12:18:23,772 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:18:23,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:18:23,780 INFO L225 Difference]: With dead ends: 6738 [2022-01-18 12:18:23,780 INFO L226 Difference]: Without dead ends: 6636 [2022-01-18 12:18:23,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 303 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38375 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=9745, Invalid=82975, Unknown=0, NotChecked=0, Total=92720 [2022-01-18 12:18:23,783 INFO L933 BasicCegarLoop]: 384 mSDtfsCounter, 2268 mSDsluCounter, 9175 mSDsCounter, 0 mSdLazyCounter, 5457 mSolverCounterSat, 334 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2268 SdHoareTripleChecker+Valid, 9121 SdHoareTripleChecker+Invalid, 5791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 334 IncrementalHoareTripleChecker+Valid, 5457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-18 12:18:23,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2268 Valid, 9121 Invalid, 5791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [334 Valid, 5457 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-18 12:18:23,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6636 states. [2022-01-18 12:18:23,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6636 to 1619. [2022-01-18 12:18:23,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1619 states, 1618 states have (on average 2.7818294190358466) internal successors, (4501), 1618 states have internal predecessors, (4501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:18:23,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1619 states to 1619 states and 4501 transitions. [2022-01-18 12:18:23,818 INFO L78 Accepts]: Start accepts. Automaton has 1619 states and 4501 transitions. Word has length 72 [2022-01-18 12:18:23,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:18:23,819 INFO L470 AbstractCegarLoop]: Abstraction has 1619 states and 4501 transitions. [2022-01-18 12:18:23,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:18:23,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1619 states and 4501 transitions. [2022-01-18 12:18:23,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:18:23,820 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:18:23,821 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:18:23,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2022-01-18 12:18:24,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:18:24,021 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:18:24,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:18:24,021 INFO L85 PathProgramCache]: Analyzing trace with hash 780707329, now seen corresponding path program 34 times [2022-01-18 12:18:24,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:18:24,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157851753] [2022-01-18 12:18:24,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:18:24,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:18:24,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:18:24,244 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:18:24,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:18:24,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157851753] [2022-01-18 12:18:24,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157851753] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:18:24,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696155206] [2022-01-18 12:18:24,245 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:18:24,245 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:18:24,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:18:24,246 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:18:24,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-01-18 12:18:24,337 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:18:24,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:18:24,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 12:18:24,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:18:24,907 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:18:24,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:18:25,564 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:18:25,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696155206] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:18:25,564 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:18:25,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-01-18 12:18:25,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67153640] [2022-01-18 12:18:25,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:18:25,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 12:18:25,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:18:25,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 12:18:25,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1866, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 12:18:25,565 INFO L87 Difference]: Start difference. First operand 1619 states and 4501 transitions. Second operand has 46 states, 46 states have (on average 3.1956521739130435) internal successors, (147), 46 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:18:37,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:18:37,867 INFO L93 Difference]: Finished difference Result 6698 states and 17536 transitions. [2022-01-18 12:18:37,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 230 states. [2022-01-18 12:18:37,867 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.1956521739130435) internal successors, (147), 46 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:18:37,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:18:37,876 INFO L225 Difference]: With dead ends: 6698 [2022-01-18 12:18:37,877 INFO L226 Difference]: Without dead ends: 6596 [2022-01-18 12:18:37,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 258 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27045 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=8345, Invalid=58995, Unknown=0, NotChecked=0, Total=67340 [2022-01-18 12:18:37,880 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 2167 mSDsluCounter, 7590 mSDsCounter, 0 mSdLazyCounter, 4393 mSolverCounterSat, 387 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2167 SdHoareTripleChecker+Valid, 7476 SdHoareTripleChecker+Invalid, 4780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 387 IncrementalHoareTripleChecker+Valid, 4393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:18:37,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2167 Valid, 7476 Invalid, 4780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [387 Valid, 4393 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-18 12:18:37,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6596 states. [2022-01-18 12:18:37,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6596 to 1635. [2022-01-18 12:18:37,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1635 states, 1634 states have (on average 2.7937576499388004) internal successors, (4565), 1634 states have internal predecessors, (4565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:18:37,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1635 states to 1635 states and 4565 transitions. [2022-01-18 12:18:37,923 INFO L78 Accepts]: Start accepts. Automaton has 1635 states and 4565 transitions. Word has length 72 [2022-01-18 12:18:37,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:18:37,923 INFO L470 AbstractCegarLoop]: Abstraction has 1635 states and 4565 transitions. [2022-01-18 12:18:37,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.1956521739130435) internal successors, (147), 46 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:18:37,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1635 states and 4565 transitions. [2022-01-18 12:18:37,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:18:37,925 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:18:37,925 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:18:37,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2022-01-18 12:18:38,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:18:38,126 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:18:38,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:18:38,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1292297647, now seen corresponding path program 35 times [2022-01-18 12:18:38,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:18:38,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701903707] [2022-01-18 12:18:38,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:18:38,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:18:38,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:18:38,303 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:18:38,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:18:38,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701903707] [2022-01-18 12:18:38,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701903707] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:18:38,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250445125] [2022-01-18 12:18:38,303 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:18:38,303 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:18:38,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:18:38,304 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:18:38,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-01-18 12:18:38,412 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 12:18:38,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:18:38,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 12:18:38,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:18:38,963 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:18:38,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:18:39,566 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:18:39,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250445125] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:18:39,566 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:18:39,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-01-18 12:18:39,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904711471] [2022-01-18 12:18:39,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:18:39,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 12:18:39,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:18:39,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 12:18:39,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=1849, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 12:18:39,568 INFO L87 Difference]: Start difference. First operand 1635 states and 4565 transitions. Second operand has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:18:43,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:18:43,982 INFO L93 Difference]: Finished difference Result 3942 states and 10486 transitions. [2022-01-18 12:18:43,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2022-01-18 12:18:43,982 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:18:43,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:18:43,988 INFO L225 Difference]: With dead ends: 3942 [2022-01-18 12:18:43,988 INFO L226 Difference]: Without dead ends: 3840 [2022-01-18 12:18:43,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7926 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=2499, Invalid=20151, Unknown=0, NotChecked=0, Total=22650 [2022-01-18 12:18:43,989 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 1681 mSDsluCounter, 5310 mSDsCounter, 0 mSdLazyCounter, 2336 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1681 SdHoareTripleChecker+Valid, 5308 SdHoareTripleChecker+Invalid, 2498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 2336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 12:18:43,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1681 Valid, 5308 Invalid, 2498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 2336 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 12:18:43,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3840 states. [2022-01-18 12:18:44,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3840 to 1663. [2022-01-18 12:18:44,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1663 states, 1662 states have (on average 2.8008423586040916) internal successors, (4655), 1662 states have internal predecessors, (4655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:18:44,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1663 states to 1663 states and 4655 transitions. [2022-01-18 12:18:44,018 INFO L78 Accepts]: Start accepts. Automaton has 1663 states and 4655 transitions. Word has length 72 [2022-01-18 12:18:44,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:18:44,018 INFO L470 AbstractCegarLoop]: Abstraction has 1663 states and 4655 transitions. [2022-01-18 12:18:44,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:18:44,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1663 states and 4655 transitions. [2022-01-18 12:18:44,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:18:44,020 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:18:44,020 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:18:44,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2022-01-18 12:18:44,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2022-01-18 12:18:44,227 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:18:44,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:18:44,228 INFO L85 PathProgramCache]: Analyzing trace with hash 2041368747, now seen corresponding path program 60 times [2022-01-18 12:18:44,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:18:44,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373664724] [2022-01-18 12:18:44,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:18:44,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:18:44,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:18:44,381 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:18:44,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:18:44,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373664724] [2022-01-18 12:18:44,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373664724] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:18:44,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939688041] [2022-01-18 12:18:44,381 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:18:44,381 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:18:44,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:18:44,382 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:18:44,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-01-18 12:18:44,465 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 12:18:44,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:18:44,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:18:44,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:18:44,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:18:44,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:18:45,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:18:45,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939688041] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:18:45,209 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:18:45,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:18:45,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209536459] [2022-01-18 12:18:45,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:18:45,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:18:45,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:18:45,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:18:45,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1243, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:18:45,210 INFO L87 Difference]: Start difference. First operand 1663 states and 4655 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:18:47,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:18:47,579 INFO L93 Difference]: Finished difference Result 3521 states and 9074 transitions. [2022-01-18 12:18:47,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-18 12:18:47,579 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:18:47,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:18:47,584 INFO L225 Difference]: With dead ends: 3521 [2022-01-18 12:18:47,584 INFO L226 Difference]: Without dead ends: 3329 [2022-01-18 12:18:47,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3812 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1366, Invalid=10844, Unknown=0, NotChecked=0, Total=12210 [2022-01-18 12:18:47,585 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 1378 mSDsluCounter, 4335 mSDsCounter, 0 mSdLazyCounter, 1601 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1378 SdHoareTripleChecker+Valid, 4300 SdHoareTripleChecker+Invalid, 1693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:18:47,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1378 Valid, 4300 Invalid, 1693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1601 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:18:47,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3329 states. [2022-01-18 12:18:47,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3329 to 1709. [2022-01-18 12:18:47,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1709 states, 1708 states have (on average 2.8079625292740045) internal successors, (4796), 1708 states have internal predecessors, (4796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:18:47,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1709 states to 1709 states and 4796 transitions. [2022-01-18 12:18:47,615 INFO L78 Accepts]: Start accepts. Automaton has 1709 states and 4796 transitions. Word has length 72 [2022-01-18 12:18:47,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:18:47,615 INFO L470 AbstractCegarLoop]: Abstraction has 1709 states and 4796 transitions. [2022-01-18 12:18:47,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:18:47,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1709 states and 4796 transitions. [2022-01-18 12:18:47,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:18:47,618 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:18:47,618 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:18:47,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2022-01-18 12:18:47,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2022-01-18 12:18:47,827 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:18:47,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:18:47,828 INFO L85 PathProgramCache]: Analyzing trace with hash 203404863, now seen corresponding path program 36 times [2022-01-18 12:18:47,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:18:47,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489143806] [2022-01-18 12:18:47,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:18:47,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:18:47,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:18:47,996 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:18:47,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:18:47,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489143806] [2022-01-18 12:18:47,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489143806] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:18:47,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114925677] [2022-01-18 12:18:47,997 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:18:47,997 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:18:47,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:18:47,998 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:18:47,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-01-18 12:18:48,084 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 12:18:48,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:18:48,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 12:18:48,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:18:48,653 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:18:48,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:18:49,247 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:18:49,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114925677] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:18:49,247 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:18:49,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-01-18 12:18:49,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209014978] [2022-01-18 12:18:49,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:18:49,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 12:18:49,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:18:49,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 12:18:49,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1852, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 12:18:49,248 INFO L87 Difference]: Start difference. First operand 1709 states and 4796 transitions. Second operand has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:18:54,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:18:54,425 INFO L93 Difference]: Finished difference Result 4500 states and 11794 transitions. [2022-01-18 12:18:54,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-01-18 12:18:54,425 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:18:54,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:18:54,431 INFO L225 Difference]: With dead ends: 4500 [2022-01-18 12:18:54,431 INFO L226 Difference]: Without dead ends: 4398 [2022-01-18 12:18:54,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9865 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=2920, Invalid=24470, Unknown=0, NotChecked=0, Total=27390 [2022-01-18 12:18:54,433 INFO L933 BasicCegarLoop]: 289 mSDtfsCounter, 1654 mSDsluCounter, 6482 mSDsCounter, 0 mSdLazyCounter, 2799 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1654 SdHoareTripleChecker+Valid, 6435 SdHoareTripleChecker+Invalid, 2948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 2799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 12:18:54,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1654 Valid, 6435 Invalid, 2948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 2799 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 12:18:54,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4398 states. [2022-01-18 12:18:54,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4398 to 1717. [2022-01-18 12:18:54,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1717 states, 1716 states have (on average 2.812354312354312) internal successors, (4826), 1716 states have internal predecessors, (4826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:18:54,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1717 states to 1717 states and 4826 transitions. [2022-01-18 12:18:54,465 INFO L78 Accepts]: Start accepts. Automaton has 1717 states and 4826 transitions. Word has length 72 [2022-01-18 12:18:54,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:18:54,465 INFO L470 AbstractCegarLoop]: Abstraction has 1717 states and 4826 transitions. [2022-01-18 12:18:54,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:18:54,465 INFO L276 IsEmpty]: Start isEmpty. Operand 1717 states and 4826 transitions. [2022-01-18 12:18:54,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:18:54,467 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:18:54,467 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:18:54,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Forceful destruction successful, exit code 0 [2022-01-18 12:18:54,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2022-01-18 12:18:54,669 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:18:54,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:18:54,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1280587633, now seen corresponding path program 37 times [2022-01-18 12:18:54,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:18:54,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160301784] [2022-01-18 12:18:54,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:18:54,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:18:54,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:18:54,899 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:18:54,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:18:54,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160301784] [2022-01-18 12:18:54,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160301784] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:18:54,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654665462] [2022-01-18 12:18:54,899 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:18:54,900 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:18:54,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:18:54,901 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:18:54,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-01-18 12:18:54,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:18:54,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 12:18:54,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:18:55,506 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:18:55,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:18:56,023 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:18:56,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654665462] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:18:56,024 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:18:56,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 45 [2022-01-18 12:18:56,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125193980] [2022-01-18 12:18:56,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:18:56,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-18 12:18:56,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:18:56,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-18 12:18:56,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1783, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 12:18:56,025 INFO L87 Difference]: Start difference. First operand 1717 states and 4826 transitions. Second operand has 45 states, 45 states have (on average 3.3333333333333335) internal successors, (150), 45 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:19:03,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:19:03,058 INFO L93 Difference]: Finished difference Result 6017 states and 15853 transitions. [2022-01-18 12:19:03,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2022-01-18 12:19:03,059 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.3333333333333335) internal successors, (150), 45 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:19:03,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:19:03,067 INFO L225 Difference]: With dead ends: 6017 [2022-01-18 12:19:03,067 INFO L226 Difference]: Without dead ends: 5885 [2022-01-18 12:19:03,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14764 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=4197, Invalid=34809, Unknown=0, NotChecked=0, Total=39006 [2022-01-18 12:19:03,069 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 2433 mSDsluCounter, 7123 mSDsCounter, 0 mSdLazyCounter, 3533 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2433 SdHoareTripleChecker+Valid, 7085 SdHoareTripleChecker+Invalid, 3789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 3533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 12:19:03,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2433 Valid, 7085 Invalid, 3789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 3533 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 12:19:03,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5885 states. [2022-01-18 12:19:03,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5885 to 1821. [2022-01-18 12:19:03,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1821 states, 1820 states have (on average 2.841758241758242) internal successors, (5172), 1820 states have internal predecessors, (5172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:19:03,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1821 states to 1821 states and 5172 transitions. [2022-01-18 12:19:03,108 INFO L78 Accepts]: Start accepts. Automaton has 1821 states and 5172 transitions. Word has length 72 [2022-01-18 12:19:03,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:19:03,109 INFO L470 AbstractCegarLoop]: Abstraction has 1821 states and 5172 transitions. [2022-01-18 12:19:03,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.3333333333333335) internal successors, (150), 45 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:19:03,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1821 states and 5172 transitions. [2022-01-18 12:19:03,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:19:03,111 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:19:03,111 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:19:03,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2022-01-18 12:19:03,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2022-01-18 12:19:03,311 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:19:03,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:19:03,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1948258621, now seen corresponding path program 38 times [2022-01-18 12:19:03,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:19:03,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616259020] [2022-01-18 12:19:03,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:19:03,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:19:03,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:19:03,551 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:19:03,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:19:03,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616259020] [2022-01-18 12:19:03,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616259020] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:19:03,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911638166] [2022-01-18 12:19:03,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:19:03,551 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:19:03,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:19:03,552 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:19:03,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-01-18 12:19:03,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:19:03,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:19:03,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 12:19:03,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:19:04,165 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:19:04,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:19:04,726 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:19:04,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911638166] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:19:04,727 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:19:04,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 45 [2022-01-18 12:19:04,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428115531] [2022-01-18 12:19:04,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:19:04,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-18 12:19:04,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:19:04,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-18 12:19:04,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1791, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 12:19:04,728 INFO L87 Difference]: Start difference. First operand 1821 states and 5172 transitions. Second operand has 45 states, 45 states have (on average 3.3333333333333335) internal successors, (150), 45 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:19:14,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:19:14,681 INFO L93 Difference]: Finished difference Result 6228 states and 16428 transitions. [2022-01-18 12:19:14,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2022-01-18 12:19:14,682 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.3333333333333335) internal successors, (150), 45 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:19:14,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:19:14,691 INFO L225 Difference]: With dead ends: 6228 [2022-01-18 12:19:14,691 INFO L226 Difference]: Without dead ends: 6126 [2022-01-18 12:19:14,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 244 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24008 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=6244, Invalid=54026, Unknown=0, NotChecked=0, Total=60270 [2022-01-18 12:19:14,694 INFO L933 BasicCegarLoop]: 343 mSDtfsCounter, 2281 mSDsluCounter, 7570 mSDsCounter, 0 mSdLazyCounter, 3985 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2281 SdHoareTripleChecker+Valid, 7625 SdHoareTripleChecker+Invalid, 4227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 3985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:19:14,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2281 Valid, 7625 Invalid, 4227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 3985 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 12:19:14,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6126 states. [2022-01-18 12:19:14,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6126 to 1825. [2022-01-18 12:19:14,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1825 states, 1824 states have (on average 2.84375) internal successors, (5187), 1824 states have internal predecessors, (5187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:19:14,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1825 states to 1825 states and 5187 transitions. [2022-01-18 12:19:14,739 INFO L78 Accepts]: Start accepts. Automaton has 1825 states and 5187 transitions. Word has length 72 [2022-01-18 12:19:14,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:19:14,739 INFO L470 AbstractCegarLoop]: Abstraction has 1825 states and 5187 transitions. [2022-01-18 12:19:14,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.3333333333333335) internal successors, (150), 45 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:19:14,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1825 states and 5187 transitions. [2022-01-18 12:19:14,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:19:14,742 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:19:14,742 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:19:14,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2022-01-18 12:19:14,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2022-01-18 12:19:14,942 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:19:14,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:19:14,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1311702415, now seen corresponding path program 39 times [2022-01-18 12:19:14,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:19:14,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720474853] [2022-01-18 12:19:14,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:19:14,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:19:14,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:19:15,185 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:19:15,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:19:15,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720474853] [2022-01-18 12:19:15,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720474853] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:19:15,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939276753] [2022-01-18 12:19:15,185 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:19:15,185 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:19:15,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:19:15,186 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:19:15,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2022-01-18 12:19:15,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 12:19:15,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:19:15,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 12:19:15,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:19:15,795 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:19:15,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:19:16,306 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:19:16,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939276753] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:19:16,307 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:19:16,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 45 [2022-01-18 12:19:16,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321584344] [2022-01-18 12:19:16,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:19:16,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-18 12:19:16,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:19:16,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-18 12:19:16,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1784, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 12:19:16,308 INFO L87 Difference]: Start difference. First operand 1825 states and 5187 transitions. Second operand has 45 states, 45 states have (on average 3.3333333333333335) internal successors, (150), 45 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:19:29,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:19:29,009 INFO L93 Difference]: Finished difference Result 7250 states and 18862 transitions. [2022-01-18 12:19:29,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 259 states. [2022-01-18 12:19:29,009 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.3333333333333335) internal successors, (150), 45 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:19:29,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:19:29,020 INFO L225 Difference]: With dead ends: 7250 [2022-01-18 12:19:29,020 INFO L226 Difference]: Without dead ends: 7097 [2022-01-18 12:19:29,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 286 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33946 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=8556, Invalid=74100, Unknown=0, NotChecked=0, Total=82656 [2022-01-18 12:19:29,024 INFO L933 BasicCegarLoop]: 399 mSDtfsCounter, 3169 mSDsluCounter, 6838 mSDsCounter, 0 mSdLazyCounter, 3835 mSolverCounterSat, 402 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3169 SdHoareTripleChecker+Valid, 6878 SdHoareTripleChecker+Invalid, 4237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 402 IncrementalHoareTripleChecker+Valid, 3835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:19:29,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3169 Valid, 6878 Invalid, 4237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [402 Valid, 3835 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 12:19:29,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7097 states. [2022-01-18 12:19:29,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7097 to 1813. [2022-01-18 12:19:29,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1813 states, 1812 states have (on average 2.837748344370861) internal successors, (5142), 1812 states have internal predecessors, (5142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:19:29,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 5142 transitions. [2022-01-18 12:19:29,074 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 5142 transitions. Word has length 72 [2022-01-18 12:19:29,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:19:29,074 INFO L470 AbstractCegarLoop]: Abstraction has 1813 states and 5142 transitions. [2022-01-18 12:19:29,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.3333333333333335) internal successors, (150), 45 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:19:29,074 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 5142 transitions. [2022-01-18 12:19:29,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:19:29,076 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:19:29,077 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:19:29,092 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Ended with exit code 0 [2022-01-18 12:19:29,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:19:29,278 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:19:29,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:19:29,278 INFO L85 PathProgramCache]: Analyzing trace with hash -168753791, now seen corresponding path program 61 times [2022-01-18 12:19:29,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:19:29,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761408993] [2022-01-18 12:19:29,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:19:29,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:19:29,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:19:29,462 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:19:29,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:19:29,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761408993] [2022-01-18 12:19:29,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761408993] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:19:29,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029974809] [2022-01-18 12:19:29,462 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:19:29,462 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:19:29,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:19:29,463 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:19:29,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-01-18 12:19:29,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:19:29,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:19:29,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:19:29,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:19:29,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:19:30,339 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:19:30,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029974809] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:19:30,339 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:19:30,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:19:30,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406099111] [2022-01-18 12:19:30,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:19:30,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:19:30,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:19:30,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:19:30,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1241, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:19:30,340 INFO L87 Difference]: Start difference. First operand 1813 states and 5142 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:19:34,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:19:34,846 INFO L93 Difference]: Finished difference Result 4844 states and 12738 transitions. [2022-01-18 12:19:34,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-01-18 12:19:34,846 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:19:34,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:19:34,853 INFO L225 Difference]: With dead ends: 4844 [2022-01-18 12:19:34,853 INFO L226 Difference]: Without dead ends: 4667 [2022-01-18 12:19:34,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9131 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=2618, Invalid=21874, Unknown=0, NotChecked=0, Total=24492 [2022-01-18 12:19:34,855 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 2012 mSDsluCounter, 3699 mSDsCounter, 0 mSdLazyCounter, 1665 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2012 SdHoareTripleChecker+Valid, 3720 SdHoareTripleChecker+Invalid, 1896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 1665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 12:19:34,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2012 Valid, 3720 Invalid, 1896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 1665 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 12:19:34,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4667 states. [2022-01-18 12:19:34,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4667 to 1889. [2022-01-18 12:19:34,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1889 states, 1888 states have (on average 2.8426906779661016) internal successors, (5367), 1888 states have internal predecessors, (5367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:19:34,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1889 states to 1889 states and 5367 transitions. [2022-01-18 12:19:34,893 INFO L78 Accepts]: Start accepts. Automaton has 1889 states and 5367 transitions. Word has length 72 [2022-01-18 12:19:34,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:19:34,893 INFO L470 AbstractCegarLoop]: Abstraction has 1889 states and 5367 transitions. [2022-01-18 12:19:34,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:19:34,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1889 states and 5367 transitions. [2022-01-18 12:19:34,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:19:34,895 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:19:34,895 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:19:34,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Forceful destruction successful, exit code 0 [2022-01-18 12:19:35,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:19:35,096 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:19:35,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:19:35,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1788326047, now seen corresponding path program 62 times [2022-01-18 12:19:35,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:19:35,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401706741] [2022-01-18 12:19:35,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:19:35,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:19:35,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:19:35,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:19:35,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:19:35,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401706741] [2022-01-18 12:19:35,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401706741] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:19:35,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328659955] [2022-01-18 12:19:35,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:19:35,289 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:19:35,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:19:35,290 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:19:35,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-01-18 12:19:35,375 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:19:35,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:19:35,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:19:35,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:19:35,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:19:35,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:19:36,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:19:36,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328659955] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:19:36,175 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:19:36,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:19:36,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535243062] [2022-01-18 12:19:36,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:19:36,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:19:36,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:19:36,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:19:36,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1227, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:19:36,176 INFO L87 Difference]: Start difference. First operand 1889 states and 5367 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:19:41,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:19:41,753 INFO L93 Difference]: Finished difference Result 5539 states and 14421 transitions. [2022-01-18 12:19:41,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2022-01-18 12:19:41,754 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:19:41,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:19:41,760 INFO L225 Difference]: With dead ends: 5539 [2022-01-18 12:19:41,761 INFO L226 Difference]: Without dead ends: 5392 [2022-01-18 12:19:41,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12578 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=3667, Invalid=28195, Unknown=0, NotChecked=0, Total=31862 [2022-01-18 12:19:41,762 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 2045 mSDsluCounter, 5301 mSDsCounter, 0 mSdLazyCounter, 2274 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2045 SdHoareTripleChecker+Valid, 5205 SdHoareTripleChecker+Invalid, 2525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 2274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 12:19:41,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2045 Valid, 5205 Invalid, 2525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 2274 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 12:19:41,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5392 states. [2022-01-18 12:19:41,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5392 to 1925. [2022-01-18 12:19:41,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1925 states, 1924 states have (on average 2.843035343035343) internal successors, (5470), 1924 states have internal predecessors, (5470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:19:41,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1925 states to 1925 states and 5470 transitions. [2022-01-18 12:19:41,798 INFO L78 Accepts]: Start accepts. Automaton has 1925 states and 5470 transitions. Word has length 72 [2022-01-18 12:19:41,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:19:41,798 INFO L470 AbstractCegarLoop]: Abstraction has 1925 states and 5470 transitions. [2022-01-18 12:19:41,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:19:41,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1925 states and 5470 transitions. [2022-01-18 12:19:41,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:19:41,800 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:19:41,800 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:19:41,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Forceful destruction successful, exit code 0 [2022-01-18 12:19:42,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2022-01-18 12:19:42,001 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:19:42,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:19:42,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1479755403, now seen corresponding path program 63 times [2022-01-18 12:19:42,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:19:42,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621589422] [2022-01-18 12:19:42,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:19:42,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:19:42,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:19:42,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:19:42,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:19:42,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621589422] [2022-01-18 12:19:42,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621589422] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:19:42,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128779624] [2022-01-18 12:19:42,166 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:19:42,166 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:19:42,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:19:42,167 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:19:42,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-01-18 12:19:42,257 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 12:19:42,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:19:42,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:19:42,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:19:42,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:19:42,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:19:43,049 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:19:43,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128779624] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:19:43,049 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:19:43,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:19:43,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115678340] [2022-01-18 12:19:43,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:19:43,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:19:43,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:19:43,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:19:43,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1225, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:19:43,050 INFO L87 Difference]: Start difference. First operand 1925 states and 5470 transitions. Second operand has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:19:46,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:19:46,117 INFO L93 Difference]: Finished difference Result 4347 states and 11287 transitions. [2022-01-18 12:19:46,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-01-18 12:19:46,117 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:19:46,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:19:46,123 INFO L225 Difference]: With dead ends: 4347 [2022-01-18 12:19:46,123 INFO L226 Difference]: Without dead ends: 4245 [2022-01-18 12:19:46,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5038 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1936, Invalid=12826, Unknown=0, NotChecked=0, Total=14762 [2022-01-18 12:19:46,124 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 1596 mSDsluCounter, 4720 mSDsCounter, 0 mSdLazyCounter, 1937 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1596 SdHoareTripleChecker+Valid, 4656 SdHoareTripleChecker+Invalid, 2083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 12:19:46,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1596 Valid, 4656 Invalid, 2083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1937 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 12:19:46,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4245 states. [2022-01-18 12:19:46,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4245 to 1877. [2022-01-18 12:19:46,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1877 states, 1876 states have (on average 2.8347547974413647) internal successors, (5318), 1876 states have internal predecessors, (5318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:19:46,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1877 states to 1877 states and 5318 transitions. [2022-01-18 12:19:46,156 INFO L78 Accepts]: Start accepts. Automaton has 1877 states and 5318 transitions. Word has length 72 [2022-01-18 12:19:46,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:19:46,156 INFO L470 AbstractCegarLoop]: Abstraction has 1877 states and 5318 transitions. [2022-01-18 12:19:46,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:19:46,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1877 states and 5318 transitions. [2022-01-18 12:19:46,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:19:46,159 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:19:46,159 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:19:46,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Forceful destruction successful, exit code 0 [2022-01-18 12:19:46,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable108 [2022-01-18 12:19:46,359 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:19:46,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:19:46,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1703923715, now seen corresponding path program 64 times [2022-01-18 12:19:46,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:19:46,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456516877] [2022-01-18 12:19:46,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:19:46,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:19:46,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:19:46,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:19:46,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:19:46,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456516877] [2022-01-18 12:19:46,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456516877] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:19:46,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462318045] [2022-01-18 12:19:46,514 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:19:46,514 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:19:46,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:19:46,515 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:19:46,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-01-18 12:19:46,601 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:19:46,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:19:46,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:19:46,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:19:46,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:19:46,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:19:47,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:19:47,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462318045] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:19:47,369 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:19:47,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 12:19:47,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774081816] [2022-01-18 12:19:47,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:19:47,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 12:19:47,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:19:47,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 12:19:47,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1242, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 12:19:47,370 INFO L87 Difference]: Start difference. First operand 1877 states and 5318 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:19:50,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:19:50,380 INFO L93 Difference]: Finished difference Result 4006 states and 10477 transitions. [2022-01-18 12:19:50,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-01-18 12:19:50,381 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:19:50,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:19:50,386 INFO L225 Difference]: With dead ends: 4006 [2022-01-18 12:19:50,386 INFO L226 Difference]: Without dead ends: 3829 [2022-01-18 12:19:50,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4290 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1481, Invalid=11859, Unknown=0, NotChecked=0, Total=13340 [2022-01-18 12:19:50,387 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 1431 mSDsluCounter, 4520 mSDsCounter, 0 mSdLazyCounter, 1614 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1431 SdHoareTripleChecker+Valid, 4464 SdHoareTripleChecker+Invalid, 1728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:19:50,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1431 Valid, 4464 Invalid, 1728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1614 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 12:19:50,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3829 states. [2022-01-18 12:19:50,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3829 to 1833. [2022-01-18 12:19:50,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1833 states, 1832 states have (on average 2.808406113537118) internal successors, (5145), 1832 states have internal predecessors, (5145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:19:50,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1833 states to 1833 states and 5145 transitions. [2022-01-18 12:19:50,415 INFO L78 Accepts]: Start accepts. Automaton has 1833 states and 5145 transitions. Word has length 72 [2022-01-18 12:19:50,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:19:50,415 INFO L470 AbstractCegarLoop]: Abstraction has 1833 states and 5145 transitions. [2022-01-18 12:19:50,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:19:50,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1833 states and 5145 transitions. [2022-01-18 12:19:50,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:19:50,417 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:19:50,417 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:19:50,432 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Ended with exit code 0 [2022-01-18 12:19:50,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:19:50,618 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:19:50,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:19:50,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1550978537, now seen corresponding path program 65 times [2022-01-18 12:19:50,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:19:50,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137355117] [2022-01-18 12:19:50,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:19:50,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:19:50,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:19:50,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:19:50,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:19:50,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137355117] [2022-01-18 12:19:50,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137355117] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:19:50,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236349426] [2022-01-18 12:19:50,787 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:19:50,787 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:19:50,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:19:50,788 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:19:50,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-01-18 12:19:50,877 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:19:50,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:19:50,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 12:19:50,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:19:51,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:19:51,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:19:51,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:19:51,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236349426] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:19:51,744 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:19:51,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 41 [2022-01-18 12:19:51,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185845510] [2022-01-18 12:19:51,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:19:51,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 12:19:51,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:19:51,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 12:19:51,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=1378, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 12:19:51,745 INFO L87 Difference]: Start difference. First operand 1833 states and 5145 transitions. Second operand has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:19:52,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:19:52,805 INFO L93 Difference]: Finished difference Result 3123 states and 8418 transitions. [2022-01-18 12:19:52,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 12:19:52,805 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:19:52,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:19:52,809 INFO L225 Difference]: With dead ends: 3123 [2022-01-18 12:19:52,809 INFO L226 Difference]: Without dead ends: 2934 [2022-01-18 12:19:52,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1214 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=807, Invalid=4163, Unknown=0, NotChecked=0, Total=4970 [2022-01-18 12:19:52,810 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 1052 mSDsluCounter, 3234 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 3228 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:19:52,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1052 Valid, 3228 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:19:52,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2934 states. [2022-01-18 12:19:52,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2934 to 1836. [2022-01-18 12:19:52,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1836 states, 1835 states have (on average 2.8256130790190737) internal successors, (5185), 1835 states have internal predecessors, (5185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:19:52,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1836 states to 1836 states and 5185 transitions. [2022-01-18 12:19:52,836 INFO L78 Accepts]: Start accepts. Automaton has 1836 states and 5185 transitions. Word has length 72 [2022-01-18 12:19:52,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:19:52,836 INFO L470 AbstractCegarLoop]: Abstraction has 1836 states and 5185 transitions. [2022-01-18 12:19:52,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:19:52,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1836 states and 5185 transitions. [2022-01-18 12:19:52,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:19:52,839 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:19:52,839 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:19:52,855 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Ended with exit code 0 [2022-01-18 12:19:53,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:19:53,039 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:19:53,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:19:53,039 INFO L85 PathProgramCache]: Analyzing trace with hash -405746359, now seen corresponding path program 40 times [2022-01-18 12:19:53,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:19:53,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010707088] [2022-01-18 12:19:53,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:19:53,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:19:53,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:19:53,207 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:19:53,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:19:53,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010707088] [2022-01-18 12:19:53,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010707088] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:19:53,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848877661] [2022-01-18 12:19:53,208 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:19:53,208 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:19:53,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:19:53,209 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:19:53,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2022-01-18 12:19:53,293 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:19:53,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:19:53,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 12:19:53,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:19:53,848 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:19:53,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:19:54,438 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:19:54,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848877661] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:19:54,438 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:19:54,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-01-18 12:19:54,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663332673] [2022-01-18 12:19:54,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:19:54,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 12:19:54,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:19:54,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 12:19:54,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=1848, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 12:19:54,439 INFO L87 Difference]: Start difference. First operand 1836 states and 5185 transitions. Second operand has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:19:58,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:19:58,138 INFO L93 Difference]: Finished difference Result 3851 states and 10327 transitions. [2022-01-18 12:19:58,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-01-18 12:19:58,138 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:19:58,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:19:58,144 INFO L225 Difference]: With dead ends: 3851 [2022-01-18 12:19:58,144 INFO L226 Difference]: Without dead ends: 3749 [2022-01-18 12:19:58,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6246 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1982, Invalid=16650, Unknown=0, NotChecked=0, Total=18632 [2022-01-18 12:19:58,145 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 1422 mSDsluCounter, 5792 mSDsCounter, 0 mSdLazyCounter, 2341 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1422 SdHoareTripleChecker+Valid, 5720 SdHoareTripleChecker+Invalid, 2499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 2341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 12:19:58,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1422 Valid, 5720 Invalid, 2499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 2341 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 12:19:58,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3749 states. [2022-01-18 12:19:58,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3749 to 1850. [2022-01-18 12:19:58,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1850 states, 1849 states have (on average 2.8247701460248784) internal successors, (5223), 1849 states have internal predecessors, (5223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:19:58,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1850 states to 1850 states and 5223 transitions. [2022-01-18 12:19:58,175 INFO L78 Accepts]: Start accepts. Automaton has 1850 states and 5223 transitions. Word has length 72 [2022-01-18 12:19:58,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:19:58,175 INFO L470 AbstractCegarLoop]: Abstraction has 1850 states and 5223 transitions. [2022-01-18 12:19:58,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:19:58,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1850 states and 5223 transitions. [2022-01-18 12:19:58,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:19:58,177 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:19:58,177 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:19:58,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Forceful destruction successful, exit code 0 [2022-01-18 12:19:58,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2022-01-18 12:19:58,378 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:19:58,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:19:58,378 INFO L85 PathProgramCache]: Analyzing trace with hash 671436411, now seen corresponding path program 41 times [2022-01-18 12:19:58,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:19:58,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976502854] [2022-01-18 12:19:58,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:19:58,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:19:58,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:19:58,572 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:19:58,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:19:58,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976502854] [2022-01-18 12:19:58,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976502854] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:19:58,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137357759] [2022-01-18 12:19:58,573 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:19:58,573 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:19:58,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:19:58,574 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:19:58,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2022-01-18 12:19:58,662 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 12:19:58,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:19:58,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 12:19:58,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:19:59,203 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:19:59,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:19:59,795 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:19:59,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137357759] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:19:59,795 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:19:59,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-01-18 12:19:59,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743951858] [2022-01-18 12:19:59,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:19:59,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 12:19:59,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:19:59,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 12:19:59,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=1856, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 12:19:59,796 INFO L87 Difference]: Start difference. First operand 1850 states and 5223 transitions. Second operand has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:20:05,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:20:05,577 INFO L93 Difference]: Finished difference Result 4977 states and 13266 transitions. [2022-01-18 12:20:05,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-01-18 12:20:05,578 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:20:05,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:20:05,584 INFO L225 Difference]: With dead ends: 4977 [2022-01-18 12:20:05,585 INFO L226 Difference]: Without dead ends: 4845 [2022-01-18 12:20:05,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10088 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=2957, Invalid=25435, Unknown=0, NotChecked=0, Total=28392 [2022-01-18 12:20:05,586 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 1697 mSDsluCounter, 6934 mSDsCounter, 0 mSdLazyCounter, 3312 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1697 SdHoareTripleChecker+Valid, 6881 SdHoareTripleChecker+Invalid, 3525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 3312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:20:05,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1697 Valid, 6881 Invalid, 3525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 3312 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 12:20:05,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4845 states. [2022-01-18 12:20:05,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4845 to 1862. [2022-01-18 12:20:05,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1862 states, 1861 states have (on average 2.830736163353036) internal successors, (5268), 1861 states have internal predecessors, (5268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:20:05,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1862 states to 1862 states and 5268 transitions. [2022-01-18 12:20:05,622 INFO L78 Accepts]: Start accepts. Automaton has 1862 states and 5268 transitions. Word has length 72 [2022-01-18 12:20:05,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:20:05,622 INFO L470 AbstractCegarLoop]: Abstraction has 1862 states and 5268 transitions. [2022-01-18 12:20:05,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:20:05,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1862 states and 5268 transitions. [2022-01-18 12:20:05,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:20:05,624 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:20:05,624 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:20:05,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Forceful destruction successful, exit code 0 [2022-01-18 12:20:05,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2022-01-18 12:20:05,825 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:20:05,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:20:05,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1737557453, now seen corresponding path program 42 times [2022-01-18 12:20:05,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:20:05,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824699906] [2022-01-18 12:20:05,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:20:05,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:20:05,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:20:06,009 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:20:06,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:20:06,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824699906] [2022-01-18 12:20:06,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824699906] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:20:06,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106643685] [2022-01-18 12:20:06,010 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:20:06,010 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:20:06,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:20:06,011 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:20:06,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2022-01-18 12:20:06,101 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 12:20:06,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:20:06,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 12:20:06,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:20:06,650 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:20:06,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:20:07,283 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:20:07,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106643685] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:20:07,283 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:20:07,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-01-18 12:20:07,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987523342] [2022-01-18 12:20:07,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:20:07,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 12:20:07,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:20:07,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 12:20:07,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1864, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 12:20:07,284 INFO L87 Difference]: Start difference. First operand 1862 states and 5268 transitions. Second operand has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:20:16,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:20:16,107 INFO L93 Difference]: Finished difference Result 5581 states and 14906 transitions. [2022-01-18 12:20:16,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2022-01-18 12:20:16,108 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:20:16,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:20:16,115 INFO L225 Difference]: With dead ends: 5581 [2022-01-18 12:20:16,115 INFO L226 Difference]: Without dead ends: 5479 [2022-01-18 12:20:16,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18682 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=4937, Invalid=43683, Unknown=0, NotChecked=0, Total=48620 [2022-01-18 12:20:16,117 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 2411 mSDsluCounter, 5660 mSDsCounter, 0 mSdLazyCounter, 2924 mSolverCounterSat, 355 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2411 SdHoareTripleChecker+Valid, 5707 SdHoareTripleChecker+Invalid, 3279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 355 IncrementalHoareTripleChecker+Valid, 2924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:20:16,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2411 Valid, 5707 Invalid, 3279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [355 Valid, 2924 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 12:20:16,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5479 states. [2022-01-18 12:20:16,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5479 to 1866. [2022-01-18 12:20:16,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1866 states, 1865 states have (on average 2.8327077747989278) internal successors, (5283), 1865 states have internal predecessors, (5283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:20:16,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1866 states to 1866 states and 5283 transitions. [2022-01-18 12:20:16,151 INFO L78 Accepts]: Start accepts. Automaton has 1866 states and 5283 transitions. Word has length 72 [2022-01-18 12:20:16,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:20:16,151 INFO L470 AbstractCegarLoop]: Abstraction has 1866 states and 5283 transitions. [2022-01-18 12:20:16,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:20:16,151 INFO L276 IsEmpty]: Start isEmpty. Operand 1866 states and 5283 transitions. [2022-01-18 12:20:16,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:20:16,153 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:20:16,153 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:20:16,169 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Ended with exit code 0 [2022-01-18 12:20:16,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2022-01-18 12:20:16,354 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:20:16,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:20:16,354 INFO L85 PathProgramCache]: Analyzing trace with hash 702551193, now seen corresponding path program 43 times [2022-01-18 12:20:16,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:20:16,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587869077] [2022-01-18 12:20:16,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:20:16,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:20:16,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:20:16,589 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:20:16,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:20:16,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587869077] [2022-01-18 12:20:16,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587869077] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:20:16,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589037423] [2022-01-18 12:20:16,590 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:20:16,590 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:20:16,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:20:16,591 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:20:16,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2022-01-18 12:20:16,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:20:16,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 12:20:16,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:20:17,190 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:20:17,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:20:17,717 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:20:17,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589037423] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:20:17,718 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:20:17,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 45 [2022-01-18 12:20:17,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801935864] [2022-01-18 12:20:17,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:20:17,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-18 12:20:17,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:20:17,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-18 12:20:17,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1781, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 12:20:17,718 INFO L87 Difference]: Start difference. First operand 1866 states and 5283 transitions. Second operand has 45 states, 45 states have (on average 3.3333333333333335) internal successors, (150), 45 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:20:28,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:20:28,964 INFO L93 Difference]: Finished difference Result 6604 states and 17400 transitions. [2022-01-18 12:20:28,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 231 states. [2022-01-18 12:20:28,964 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.3333333333333335) internal successors, (150), 45 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:20:28,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:20:28,973 INFO L225 Difference]: With dead ends: 6604 [2022-01-18 12:20:28,973 INFO L226 Difference]: Without dead ends: 6502 [2022-01-18 12:20:28,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 260 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27107 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=6933, Invalid=61449, Unknown=0, NotChecked=0, Total=68382 [2022-01-18 12:20:28,976 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 2588 mSDsluCounter, 8281 mSDsCounter, 0 mSdLazyCounter, 4252 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2588 SdHoareTripleChecker+Valid, 8202 SdHoareTripleChecker+Invalid, 4613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 4252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:20:28,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2588 Valid, 8202 Invalid, 4613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 4252 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 12:20:28,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6502 states. [2022-01-18 12:20:29,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6502 to 1874. [2022-01-18 12:20:29,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1874 states, 1873 states have (on average 2.8387613454351306) internal successors, (5317), 1873 states have internal predecessors, (5317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:20:29,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1874 states to 1874 states and 5317 transitions. [2022-01-18 12:20:29,017 INFO L78 Accepts]: Start accepts. Automaton has 1874 states and 5317 transitions. Word has length 72 [2022-01-18 12:20:29,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:20:29,017 INFO L470 AbstractCegarLoop]: Abstraction has 1874 states and 5317 transitions. [2022-01-18 12:20:29,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.3333333333333335) internal successors, (150), 45 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:20:29,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1874 states and 5317 transitions. [2022-01-18 12:20:29,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:20:29,019 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:20:29,019 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:20:29,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Forceful destruction successful, exit code 0 [2022-01-18 12:20:29,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114,109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:20:29,219 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:20:29,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:20:29,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1437201745, now seen corresponding path program 44 times [2022-01-18 12:20:29,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:20:29,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998851229] [2022-01-18 12:20:29,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:20:29,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:20:29,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:20:29,421 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:20:29,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:20:29,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998851229] [2022-01-18 12:20:29,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998851229] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:20:29,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484494195] [2022-01-18 12:20:29,421 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:20:29,421 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:20:29,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:20:29,423 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:20:29,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2022-01-18 12:20:29,514 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:20:29,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:20:29,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 12:20:29,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:20:30,055 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:20:30,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:20:30,668 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:20:30,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484494195] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:20:30,669 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:20:30,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-01-18 12:20:30,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057787567] [2022-01-18 12:20:30,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:20:30,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 12:20:30,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:20:30,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 12:20:30,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1855, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 12:20:30,670 INFO L87 Difference]: Start difference. First operand 1874 states and 5317 transitions. Second operand has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:20:35,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:20:35,010 INFO L93 Difference]: Finished difference Result 4945 states and 13306 transitions. [2022-01-18 12:20:35,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-01-18 12:20:35,011 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:20:35,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:20:35,018 INFO L225 Difference]: With dead ends: 4945 [2022-01-18 12:20:35,018 INFO L226 Difference]: Without dead ends: 4813 [2022-01-18 12:20:35,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7355 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2232, Invalid=19524, Unknown=0, NotChecked=0, Total=21756 [2022-01-18 12:20:35,019 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 1568 mSDsluCounter, 6371 mSDsCounter, 0 mSdLazyCounter, 2903 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1568 SdHoareTripleChecker+Valid, 6307 SdHoareTripleChecker+Invalid, 3071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 2903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:20:35,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1568 Valid, 6307 Invalid, 3071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 2903 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 12:20:35,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4813 states. [2022-01-18 12:20:35,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4813 to 1880. [2022-01-18 12:20:35,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1880 states, 1879 states have (on average 2.8403406067056944) internal successors, (5337), 1879 states have internal predecessors, (5337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:20:35,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1880 states to 1880 states and 5337 transitions. [2022-01-18 12:20:35,055 INFO L78 Accepts]: Start accepts. Automaton has 1880 states and 5337 transitions. Word has length 72 [2022-01-18 12:20:35,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:20:35,055 INFO L470 AbstractCegarLoop]: Abstraction has 1880 states and 5337 transitions. [2022-01-18 12:20:35,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:20:35,056 INFO L276 IsEmpty]: Start isEmpty. Operand 1880 states and 5337 transitions. [2022-01-18 12:20:35,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:20:35,058 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:20:35,058 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:20:35,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Forceful destruction successful, exit code 0 [2022-01-18 12:20:35,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable115 [2022-01-18 12:20:35,265 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:20:35,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:20:35,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1791644509, now seen corresponding path program 45 times [2022-01-18 12:20:35,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:20:35,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160042497] [2022-01-18 12:20:35,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:20:35,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:20:35,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:20:35,468 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:20:35,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:20:35,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160042497] [2022-01-18 12:20:35,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160042497] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:20:35,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970645683] [2022-01-18 12:20:35,469 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:20:35,469 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:20:35,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:20:35,470 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:20:35,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2022-01-18 12:20:35,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 12:20:35,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:20:35,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 12:20:35,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:20:36,120 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:20:36,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:20:36,759 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:20:36,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970645683] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:20:36,759 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:20:36,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-01-18 12:20:36,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486729972] [2022-01-18 12:20:36,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:20:36,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 12:20:36,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:20:36,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 12:20:36,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=1865, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 12:20:36,760 INFO L87 Difference]: Start difference. First operand 1880 states and 5337 transitions. Second operand has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:20:45,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:20:45,434 INFO L93 Difference]: Finished difference Result 6347 states and 16985 transitions. [2022-01-18 12:20:45,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2022-01-18 12:20:45,434 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:20:45,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:20:45,443 INFO L225 Difference]: With dead ends: 6347 [2022-01-18 12:20:45,443 INFO L226 Difference]: Without dead ends: 6245 [2022-01-18 12:20:45,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19546 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=4776, Invalid=46074, Unknown=0, NotChecked=0, Total=50850 [2022-01-18 12:20:45,446 INFO L933 BasicCegarLoop]: 363 mSDtfsCounter, 2304 mSDsluCounter, 6857 mSDsCounter, 0 mSdLazyCounter, 3689 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2304 SdHoareTripleChecker+Valid, 6903 SdHoareTripleChecker+Invalid, 3945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 3689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:20:45,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2304 Valid, 6903 Invalid, 3945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 3689 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 12:20:45,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6245 states. [2022-01-18 12:20:45,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6245 to 1884. [2022-01-18 12:20:45,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1884 states, 1883 states have (on average 2.8422729686670207) internal successors, (5352), 1883 states have internal predecessors, (5352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:20:45,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 5352 transitions. [2022-01-18 12:20:45,488 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 5352 transitions. Word has length 72 [2022-01-18 12:20:45,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:20:45,489 INFO L470 AbstractCegarLoop]: Abstraction has 1884 states and 5352 transitions. [2022-01-18 12:20:45,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:20:45,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 5352 transitions. [2022-01-18 12:20:45,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:20:45,491 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:20:45,491 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:20:45,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Forceful destruction successful, exit code 0 [2022-01-18 12:20:45,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2022-01-18 12:20:45,691 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:20:45,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:20:45,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1468316527, now seen corresponding path program 46 times [2022-01-18 12:20:45,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:20:45,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144167707] [2022-01-18 12:20:45,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:20:45,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:20:45,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:20:45,883 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:20:45,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:20:45,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144167707] [2022-01-18 12:20:45,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144167707] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:20:45,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213039961] [2022-01-18 12:20:45,883 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:20:45,883 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:20:45,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:20:45,884 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:20:45,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2022-01-18 12:20:45,972 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:20:45,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:20:45,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 12:20:45,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:20:46,508 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:20:46,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:20:47,141 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:20:47,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213039961] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:20:47,141 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:20:47,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-01-18 12:20:47,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063185685] [2022-01-18 12:20:47,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:20:47,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 12:20:47,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:20:47,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 12:20:47,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1857, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 12:20:47,142 INFO L87 Difference]: Start difference. First operand 1884 states and 5352 transitions. Second operand has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:20:52,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:20:52,373 INFO L93 Difference]: Finished difference Result 4111 states and 10883 transitions. [2022-01-18 12:20:52,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-01-18 12:20:52,373 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:20:52,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:20:52,379 INFO L225 Difference]: With dead ends: 4111 [2022-01-18 12:20:52,379 INFO L226 Difference]: Without dead ends: 4009 [2022-01-18 12:20:52,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8425 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=2466, Invalid=22026, Unknown=0, NotChecked=0, Total=24492 [2022-01-18 12:20:52,380 INFO L933 BasicCegarLoop]: 350 mSDtfsCounter, 1555 mSDsluCounter, 7865 mSDsCounter, 0 mSdLazyCounter, 3726 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1555 SdHoareTripleChecker+Valid, 7806 SdHoareTripleChecker+Invalid, 3874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 3726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 12:20:52,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1555 Valid, 7806 Invalid, 3874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 3726 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 12:20:52,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4009 states. [2022-01-18 12:20:52,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4009 to 1860. [2022-01-18 12:20:52,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1860 states, 1859 states have (on average 2.828402366863905) internal successors, (5258), 1859 states have internal predecessors, (5258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:20:52,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1860 states to 1860 states and 5258 transitions. [2022-01-18 12:20:52,410 INFO L78 Accepts]: Start accepts. Automaton has 1860 states and 5258 transitions. Word has length 72 [2022-01-18 12:20:52,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:20:52,410 INFO L470 AbstractCegarLoop]: Abstraction has 1860 states and 5258 transitions. [2022-01-18 12:20:52,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:20:52,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1860 states and 5258 transitions. [2022-01-18 12:20:52,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:20:52,412 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:20:52,412 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:20:52,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Forceful destruction successful, exit code 0 [2022-01-18 12:20:52,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2022-01-18 12:20:52,613 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:20:52,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:20:52,613 INFO L85 PathProgramCache]: Analyzing trace with hash 661609801, now seen corresponding path program 47 times [2022-01-18 12:20:52,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:20:52,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329103637] [2022-01-18 12:20:52,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:20:52,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:20:52,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:20:52,797 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:20:52,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:20:52,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329103637] [2022-01-18 12:20:52,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329103637] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:20:52,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759937778] [2022-01-18 12:20:52,797 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:20:52,797 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:20:52,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:20:52,798 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:20:52,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2022-01-18 12:20:52,889 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 12:20:52,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:20:52,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 12:20:52,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:20:53,424 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:20:53,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:20:54,049 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:20:54,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759937778] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:20:54,050 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:20:54,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-01-18 12:20:54,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084349137] [2022-01-18 12:20:54,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:20:54,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 12:20:54,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:20:54,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 12:20:54,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=1858, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 12:20:54,051 INFO L87 Difference]: Start difference. First operand 1860 states and 5258 transitions. Second operand has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:20:56,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:20:56,749 INFO L93 Difference]: Finished difference Result 3383 states and 9043 transitions. [2022-01-18 12:20:56,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-18 12:20:56,749 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:20:56,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:20:56,754 INFO L225 Difference]: With dead ends: 3383 [2022-01-18 12:20:56,754 INFO L226 Difference]: Without dead ends: 3281 [2022-01-18 12:20:56,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3702 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1261, Invalid=10729, Unknown=0, NotChecked=0, Total=11990 [2022-01-18 12:20:56,756 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 1428 mSDsluCounter, 5522 mSDsCounter, 0 mSdLazyCounter, 2441 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1428 SdHoareTripleChecker+Valid, 5472 SdHoareTripleChecker+Invalid, 2540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 12:20:56,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1428 Valid, 5472 Invalid, 2540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 2441 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 12:20:56,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3281 states. [2022-01-18 12:20:56,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3281 to 1862. [2022-01-18 12:20:56,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1862 states, 1861 states have (on average 2.830198817839871) internal successors, (5267), 1861 states have internal predecessors, (5267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:20:56,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1862 states to 1862 states and 5267 transitions. [2022-01-18 12:20:56,784 INFO L78 Accepts]: Start accepts. Automaton has 1862 states and 5267 transitions. Word has length 72 [2022-01-18 12:20:56,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:20:56,784 INFO L470 AbstractCegarLoop]: Abstraction has 1862 states and 5267 transitions. [2022-01-18 12:20:56,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:20:56,784 INFO L276 IsEmpty]: Start isEmpty. Operand 1862 states and 5267 transitions. [2022-01-18 12:20:56,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:20:56,793 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:20:56,793 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:20:56,809 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Ended with exit code 0 [2022-01-18 12:20:56,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2022-01-18 12:20:56,994 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:20:56,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:20:56,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1613746735, now seen corresponding path program 48 times [2022-01-18 12:20:56,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:20:56,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363569136] [2022-01-18 12:20:56,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:20:56,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:20:57,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:20:57,188 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:20:57,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:20:57,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363569136] [2022-01-18 12:20:57,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363569136] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:20:57,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557006734] [2022-01-18 12:20:57,189 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:20:57,189 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:20:57,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:20:57,190 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:20:57,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2022-01-18 12:20:57,284 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 12:20:57,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:20:57,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 12:20:57,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:20:57,818 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:20:57,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:20:58,441 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:20:58,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557006734] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:20:58,441 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:20:58,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-01-18 12:20:58,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258922595] [2022-01-18 12:20:58,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:20:58,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 12:20:58,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:20:58,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 12:20:58,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=1848, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 12:20:58,442 INFO L87 Difference]: Start difference. First operand 1862 states and 5267 transitions. Second operand has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:04,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:21:04,281 INFO L93 Difference]: Finished difference Result 5553 states and 14312 transitions. [2022-01-18 12:21:04,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2022-01-18 12:21:04,286 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:21:04,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:21:04,294 INFO L225 Difference]: With dead ends: 5553 [2022-01-18 12:21:04,294 INFO L226 Difference]: Without dead ends: 5451 [2022-01-18 12:21:04,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9850 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=2955, Invalid=24767, Unknown=0, NotChecked=0, Total=27722 [2022-01-18 12:21:04,296 INFO L933 BasicCegarLoop]: 413 mSDtfsCounter, 2743 mSDsluCounter, 8074 mSDsCounter, 0 mSdLazyCounter, 3457 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2743 SdHoareTripleChecker+Valid, 7971 SdHoareTripleChecker+Invalid, 3649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 3457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 12:21:04,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2743 Valid, 7971 Invalid, 3649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 3457 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 12:21:04,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5451 states. [2022-01-18 12:21:04,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5451 to 1868. [2022-01-18 12:21:04,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1868 states, 1867 states have (on average 2.8034279592929834) internal successors, (5234), 1867 states have internal predecessors, (5234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:04,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1868 states to 1868 states and 5234 transitions. [2022-01-18 12:21:04,338 INFO L78 Accepts]: Start accepts. Automaton has 1868 states and 5234 transitions. Word has length 72 [2022-01-18 12:21:04,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:21:04,338 INFO L470 AbstractCegarLoop]: Abstraction has 1868 states and 5234 transitions. [2022-01-18 12:21:04,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:04,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1868 states and 5234 transitions. [2022-01-18 12:21:04,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:21:04,340 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:21:04,340 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:21:04,358 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Forceful destruction successful, exit code 0 [2022-01-18 12:21:04,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,114 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:21:04,541 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:21:04,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:21:04,541 INFO L85 PathProgramCache]: Analyzing trace with hash 22142443, now seen corresponding path program 49 times [2022-01-18 12:21:04,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:21:04,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874711419] [2022-01-18 12:21:04,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:21:04,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:21:04,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:21:04,713 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:04,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:21:04,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874711419] [2022-01-18 12:21:04,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874711419] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:21:04,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8900441] [2022-01-18 12:21:04,714 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:21:04,714 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:21:04,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:21:04,715 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:21:04,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2022-01-18 12:21:04,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:21:04,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 12:21:04,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:21:05,362 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:05,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:21:05,945 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:05,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8900441] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:21:05,946 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:21:05,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-01-18 12:21:05,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620331159] [2022-01-18 12:21:05,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:21:05,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 12:21:05,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:21:05,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 12:21:05,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=1822, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 12:21:05,947 INFO L87 Difference]: Start difference. First operand 1868 states and 5234 transitions. Second operand has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:07,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:21:07,132 INFO L93 Difference]: Finished difference Result 2656 states and 7103 transitions. [2022-01-18 12:21:07,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 12:21:07,133 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:21:07,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:21:07,136 INFO L225 Difference]: With dead ends: 2656 [2022-01-18 12:21:07,146 INFO L226 Difference]: Without dead ends: 2554 [2022-01-18 12:21:07,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1663 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=791, Invalid=5215, Unknown=0, NotChecked=0, Total=6006 [2022-01-18 12:21:07,146 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 804 mSDsluCounter, 2638 mSDsCounter, 0 mSdLazyCounter, 895 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 2709 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:21:07,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [804 Valid, 2709 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 895 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 12:21:07,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2554 states. [2022-01-18 12:21:07,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2554 to 1892. [2022-01-18 12:21:07,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1892 states, 1891 states have (on average 2.798519301956637) internal successors, (5292), 1891 states have internal predecessors, (5292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:07,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1892 states to 1892 states and 5292 transitions. [2022-01-18 12:21:07,167 INFO L78 Accepts]: Start accepts. Automaton has 1892 states and 5292 transitions. Word has length 72 [2022-01-18 12:21:07,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:21:07,167 INFO L470 AbstractCegarLoop]: Abstraction has 1892 states and 5292 transitions. [2022-01-18 12:21:07,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:07,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1892 states and 5292 transitions. [2022-01-18 12:21:07,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:21:07,169 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:21:07,169 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:21:07,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Forceful destruction successful, exit code 0 [2022-01-18 12:21:07,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,115 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:21:07,370 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:21:07,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:21:07,370 INFO L85 PathProgramCache]: Analyzing trace with hash -204444139, now seen corresponding path program 66 times [2022-01-18 12:21:07,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:21:07,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201254471] [2022-01-18 12:21:07,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:21:07,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:21:07,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:21:07,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:07,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:21:07,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201254471] [2022-01-18 12:21:07,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201254471] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:21:07,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140116210] [2022-01-18 12:21:07,592 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:21:07,592 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:21:07,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:21:07,592 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:21:07,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2022-01-18 12:21:07,684 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 12:21:07,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:21:07,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:21:07,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:21:08,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:08,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:21:08,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:08,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140116210] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:21:08,422 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:21:08,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 34 [2022-01-18 12:21:08,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518730343] [2022-01-18 12:21:08,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:21:08,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 12:21:08,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:21:08,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 12:21:08,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=970, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 12:21:08,423 INFO L87 Difference]: Start difference. First operand 1892 states and 5292 transitions. Second operand has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:09,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:21:09,461 INFO L93 Difference]: Finished difference Result 2664 states and 7238 transitions. [2022-01-18 12:21:09,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-18 12:21:09,461 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:21:09,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:21:09,465 INFO L225 Difference]: With dead ends: 2664 [2022-01-18 12:21:09,465 INFO L226 Difference]: Without dead ends: 2613 [2022-01-18 12:21:09,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 707 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=545, Invalid=2647, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 12:21:09,466 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 438 mSDsluCounter, 2545 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 2574 SdHoareTripleChecker+Invalid, 1209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:21:09,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [438 Valid, 2574 Invalid, 1209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:21:09,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2613 states. [2022-01-18 12:21:09,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2613 to 1920. [2022-01-18 12:21:09,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1920 states, 1919 states have (on average 2.7998957790515893) internal successors, (5373), 1919 states have internal predecessors, (5373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:09,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 5373 transitions. [2022-01-18 12:21:09,499 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 5373 transitions. Word has length 72 [2022-01-18 12:21:09,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:21:09,499 INFO L470 AbstractCegarLoop]: Abstraction has 1920 states and 5373 transitions. [2022-01-18 12:21:09,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:09,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 5373 transitions. [2022-01-18 12:21:09,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:21:09,501 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:21:09,502 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:21:09,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Forceful destruction successful, exit code 0 [2022-01-18 12:21:09,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,116 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:21:09,702 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:21:09,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:21:09,703 INFO L85 PathProgramCache]: Analyzing trace with hash -505717815, now seen corresponding path program 67 times [2022-01-18 12:21:09,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:21:09,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202757925] [2022-01-18 12:21:09,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:21:09,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:21:09,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:21:09,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:09,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:21:09,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202757925] [2022-01-18 12:21:09,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202757925] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:21:09,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160625988] [2022-01-18 12:21:09,917 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:21:09,917 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:21:09,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:21:09,918 INFO L229 MonitoredProcess]: Starting monitored process 117 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:21:09,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2022-01-18 12:21:10,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:21:10,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:21:10,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:21:10,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:10,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:21:10,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:10,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160625988] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:21:10,765 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:21:10,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 34 [2022-01-18 12:21:10,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648541873] [2022-01-18 12:21:10,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:21:10,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 12:21:10,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:21:10,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 12:21:10,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=965, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 12:21:10,766 INFO L87 Difference]: Start difference. First operand 1920 states and 5373 transitions. Second operand has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:12,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:21:12,099 INFO L93 Difference]: Finished difference Result 2805 states and 7590 transitions. [2022-01-18 12:21:12,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 12:21:12,099 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:21:12,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:21:12,102 INFO L225 Difference]: With dead ends: 2805 [2022-01-18 12:21:12,103 INFO L226 Difference]: Without dead ends: 2754 [2022-01-18 12:21:12,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 123 SyntacticMatches, 4 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1113 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=865, Invalid=3691, Unknown=0, NotChecked=0, Total=4556 [2022-01-18 12:21:12,103 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 605 mSDsluCounter, 2243 mSDsCounter, 0 mSdLazyCounter, 1119 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 2288 SdHoareTripleChecker+Invalid, 1197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:21:12,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [605 Valid, 2288 Invalid, 1197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1119 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:21:12,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2754 states. [2022-01-18 12:21:12,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2754 to 1940. [2022-01-18 12:21:12,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1940 states, 1939 states have (on average 2.8076328004125837) internal successors, (5444), 1939 states have internal predecessors, (5444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:12,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1940 states to 1940 states and 5444 transitions. [2022-01-18 12:21:12,126 INFO L78 Accepts]: Start accepts. Automaton has 1940 states and 5444 transitions. Word has length 72 [2022-01-18 12:21:12,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:21:12,126 INFO L470 AbstractCegarLoop]: Abstraction has 1940 states and 5444 transitions. [2022-01-18 12:21:12,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:12,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1940 states and 5444 transitions. [2022-01-18 12:21:12,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:21:12,129 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:21:12,129 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:21:12,145 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Ended with exit code 0 [2022-01-18 12:21:12,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 117 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2022-01-18 12:21:12,329 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:21:12,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:21:12,329 INFO L85 PathProgramCache]: Analyzing trace with hash 927730493, now seen corresponding path program 68 times [2022-01-18 12:21:12,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:21:12,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188274849] [2022-01-18 12:21:12,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:21:12,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:21:12,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:21:12,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:12,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:21:12,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188274849] [2022-01-18 12:21:12,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188274849] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:21:12,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990447743] [2022-01-18 12:21:12,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:21:12,546 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:21:12,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:21:12,547 INFO L229 MonitoredProcess]: Starting monitored process 118 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:21:12,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2022-01-18 12:21:12,641 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:21:12,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:21:12,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:21:12,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:21:13,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:13,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:21:13,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:13,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990447743] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:21:13,390 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:21:13,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 34 [2022-01-18 12:21:13,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151278478] [2022-01-18 12:21:13,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:21:13,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 12:21:13,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:21:13,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 12:21:13,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=962, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 12:21:13,391 INFO L87 Difference]: Start difference. First operand 1940 states and 5444 transitions. Second operand has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:14,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:21:14,573 INFO L93 Difference]: Finished difference Result 2707 states and 7402 transitions. [2022-01-18 12:21:14,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 12:21:14,574 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:21:14,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:21:14,577 INFO L225 Difference]: With dead ends: 2707 [2022-01-18 12:21:14,577 INFO L226 Difference]: Without dead ends: 2626 [2022-01-18 12:21:14,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 923 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=681, Invalid=3101, Unknown=0, NotChecked=0, Total=3782 [2022-01-18 12:21:14,577 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 403 mSDsluCounter, 2272 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 2322 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:21:14,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [403 Valid, 2322 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 12:21:14,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2626 states. [2022-01-18 12:21:14,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2626 to 1916. [2022-01-18 12:21:14,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1916 states, 1915 states have (on average 2.797911227154047) internal successors, (5358), 1915 states have internal predecessors, (5358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:14,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 5358 transitions. [2022-01-18 12:21:14,600 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 5358 transitions. Word has length 72 [2022-01-18 12:21:14,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:21:14,600 INFO L470 AbstractCegarLoop]: Abstraction has 1916 states and 5358 transitions. [2022-01-18 12:21:14,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:14,600 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 5358 transitions. [2022-01-18 12:21:14,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:21:14,602 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:21:14,602 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:21:14,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Forceful destruction successful, exit code 0 [2022-01-18 12:21:14,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 118 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2022-01-18 12:21:14,803 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:21:14,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:21:14,803 INFO L85 PathProgramCache]: Analyzing trace with hash 80337543, now seen corresponding path program 69 times [2022-01-18 12:21:14,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:21:14,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332077681] [2022-01-18 12:21:14,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:21:14,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:21:14,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:21:15,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:15,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:21:15,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332077681] [2022-01-18 12:21:15,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332077681] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:21:15,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375042914] [2022-01-18 12:21:15,034 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:21:15,034 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:21:15,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:21:15,035 INFO L229 MonitoredProcess]: Starting monitored process 119 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:21:15,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2022-01-18 12:21:15,131 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 12:21:15,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:21:15,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:21:15,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:21:15,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:15,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:21:15,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:15,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375042914] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:21:15,860 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:21:15,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 34 [2022-01-18 12:21:15,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218900553] [2022-01-18 12:21:15,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:21:15,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 12:21:15,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:21:15,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 12:21:15,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=947, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 12:21:15,861 INFO L87 Difference]: Start difference. First operand 1916 states and 5358 transitions. Second operand has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:16,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:21:16,717 INFO L93 Difference]: Finished difference Result 2669 states and 7262 transitions. [2022-01-18 12:21:16,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 12:21:16,718 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:21:16,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:21:16,722 INFO L225 Difference]: With dead ends: 2669 [2022-01-18 12:21:16,722 INFO L226 Difference]: Without dead ends: 2618 [2022-01-18 12:21:16,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 123 SyntacticMatches, 4 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 707 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=576, Invalid=2286, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 12:21:16,722 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 517 mSDsluCounter, 1934 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 1982 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:21:16,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [517 Valid, 1982 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 12:21:16,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2618 states. [2022-01-18 12:21:16,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2618 to 1912. [2022-01-18 12:21:16,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1912 states, 1911 states have (on average 2.7980115122972267) internal successors, (5347), 1911 states have internal predecessors, (5347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:16,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1912 states to 1912 states and 5347 transitions. [2022-01-18 12:21:16,761 INFO L78 Accepts]: Start accepts. Automaton has 1912 states and 5347 transitions. Word has length 72 [2022-01-18 12:21:16,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:21:16,761 INFO L470 AbstractCegarLoop]: Abstraction has 1912 states and 5347 transitions. [2022-01-18 12:21:16,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:16,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1912 states and 5347 transitions. [2022-01-18 12:21:16,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:21:16,763 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:21:16,763 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:21:16,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Forceful destruction successful, exit code 0 [2022-01-18 12:21:16,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2022-01-18 12:21:16,964 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:21:16,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:21:16,964 INFO L85 PathProgramCache]: Analyzing trace with hash -635669965, now seen corresponding path program 70 times [2022-01-18 12:21:16,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:21:16,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041013682] [2022-01-18 12:21:16,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:21:16,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:21:16,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:21:17,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:17,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:21:17,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041013682] [2022-01-18 12:21:17,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041013682] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:21:17,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249611529] [2022-01-18 12:21:17,173 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:21:17,173 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:21:17,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:21:17,174 INFO L229 MonitoredProcess]: Starting monitored process 120 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:21:17,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2022-01-18 12:21:17,266 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:21:17,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:21:17,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:21:17,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:21:17,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:17,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:21:18,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:18,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249611529] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:21:18,012 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:21:18,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 34 [2022-01-18 12:21:18,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514892721] [2022-01-18 12:21:18,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:21:18,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 12:21:18,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:21:18,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 12:21:18,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=967, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 12:21:18,013 INFO L87 Difference]: Start difference. First operand 1912 states and 5347 transitions. Second operand has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:19,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:21:19,102 INFO L93 Difference]: Finished difference Result 2693 states and 7332 transitions. [2022-01-18 12:21:19,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 12:21:19,102 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:21:19,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:21:19,106 INFO L225 Difference]: With dead ends: 2693 [2022-01-18 12:21:19,106 INFO L226 Difference]: Without dead ends: 2642 [2022-01-18 12:21:19,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 724 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=591, Invalid=2601, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 12:21:19,107 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 359 mSDsluCounter, 2486 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 2510 SdHoareTripleChecker+Invalid, 1242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:21:19,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 2510 Invalid, 1242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:21:19,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2642 states. [2022-01-18 12:21:19,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2642 to 1908. [2022-01-18 12:21:19,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1908 states, 1907 states have (on average 2.798112218143681) internal successors, (5336), 1907 states have internal predecessors, (5336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:19,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1908 states to 1908 states and 5336 transitions. [2022-01-18 12:21:19,132 INFO L78 Accepts]: Start accepts. Automaton has 1908 states and 5336 transitions. Word has length 72 [2022-01-18 12:21:19,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:21:19,132 INFO L470 AbstractCegarLoop]: Abstraction has 1908 states and 5336 transitions. [2022-01-18 12:21:19,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:19,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1908 states and 5336 transitions. [2022-01-18 12:21:19,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:21:19,134 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:21:19,134 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:21:19,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Forceful destruction successful, exit code 0 [2022-01-18 12:21:19,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2022-01-18 12:21:19,335 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:21:19,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:21:19,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1544223287, now seen corresponding path program 71 times [2022-01-18 12:21:19,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:21:19,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428731578] [2022-01-18 12:21:19,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:21:19,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:21:19,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:21:19,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:19,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:21:19,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428731578] [2022-01-18 12:21:19,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428731578] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:21:19,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404591407] [2022-01-18 12:21:19,551 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:21:19,552 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:21:19,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:21:19,552 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:21:19,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2022-01-18 12:21:19,648 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 12:21:19,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:21:19,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:21:19,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:21:20,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:20,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:21:20,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:20,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404591407] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:21:20,388 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:21:20,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 34 [2022-01-18 12:21:20,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551539438] [2022-01-18 12:21:20,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:21:20,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 12:21:20,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:21:20,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 12:21:20,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=947, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 12:21:20,389 INFO L87 Difference]: Start difference. First operand 1908 states and 5336 transitions. Second operand has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:21,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:21:21,472 INFO L93 Difference]: Finished difference Result 2677 states and 7288 transitions. [2022-01-18 12:21:21,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 12:21:21,472 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:21:21,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:21:21,476 INFO L225 Difference]: With dead ends: 2677 [2022-01-18 12:21:21,476 INFO L226 Difference]: Without dead ends: 2626 [2022-01-18 12:21:21,477 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 123 SyntacticMatches, 4 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=645, Invalid=2661, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 12:21:21,477 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 416 mSDsluCounter, 2658 mSDsCounter, 0 mSdLazyCounter, 1271 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 2671 SdHoareTripleChecker+Invalid, 1309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:21:21,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [416 Valid, 2671 Invalid, 1309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1271 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:21:21,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2626 states. [2022-01-18 12:21:21,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2626 to 1896. [2022-01-18 12:21:21,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1896 states, 1895 states have (on average 2.7984168865435355) internal successors, (5303), 1895 states have internal predecessors, (5303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:21,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1896 states to 1896 states and 5303 transitions. [2022-01-18 12:21:21,502 INFO L78 Accepts]: Start accepts. Automaton has 1896 states and 5303 transitions. Word has length 72 [2022-01-18 12:21:21,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:21:21,502 INFO L470 AbstractCegarLoop]: Abstraction has 1896 states and 5303 transitions. [2022-01-18 12:21:21,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:21,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1896 states and 5303 transitions. [2022-01-18 12:21:21,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:21:21,504 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:21:21,504 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:21:21,520 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Ended with exit code 0 [2022-01-18 12:21:21,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2022-01-18 12:21:21,705 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:21:21,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:21:21,706 INFO L85 PathProgramCache]: Analyzing trace with hash 220418257, now seen corresponding path program 72 times [2022-01-18 12:21:21,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:21:21,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185316492] [2022-01-18 12:21:21,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:21:21,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:21:21,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:21:21,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:21,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:21:21,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185316492] [2022-01-18 12:21:21,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185316492] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:21:21,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564712063] [2022-01-18 12:21:21,953 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:21:21,953 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:21:21,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:21:21,955 INFO L229 MonitoredProcess]: Starting monitored process 122 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:21:21,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2022-01-18 12:21:22,058 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 12:21:22,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:21:22,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:21:22,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:21:22,444 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:22,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:21:22,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:22,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564712063] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:21:22,848 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:21:22,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2022-01-18 12:21:22,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895327497] [2022-01-18 12:21:22,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:21:22,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 12:21:22,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:21:22,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 12:21:22,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1100, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 12:21:22,849 INFO L87 Difference]: Start difference. First operand 1896 states and 5303 transitions. Second operand has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:23,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:21:23,883 INFO L93 Difference]: Finished difference Result 2708 states and 7347 transitions. [2022-01-18 12:21:23,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-18 12:21:23,884 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:21:23,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:21:23,888 INFO L225 Difference]: With dead ends: 2708 [2022-01-18 12:21:23,888 INFO L226 Difference]: Without dead ends: 2657 [2022-01-18 12:21:23,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 804 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=551, Invalid=2989, Unknown=0, NotChecked=0, Total=3540 [2022-01-18 12:21:23,889 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 411 mSDsluCounter, 2242 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 2285 SdHoareTripleChecker+Invalid, 1058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:21:23,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [411 Valid, 2285 Invalid, 1058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 12:21:23,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2657 states. [2022-01-18 12:21:23,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2657 to 1916. [2022-01-18 12:21:23,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1916 states, 1915 states have (on average 2.8) internal successors, (5362), 1915 states have internal predecessors, (5362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:23,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 5362 transitions. [2022-01-18 12:21:23,914 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 5362 transitions. Word has length 72 [2022-01-18 12:21:23,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:21:23,914 INFO L470 AbstractCegarLoop]: Abstraction has 1916 states and 5362 transitions. [2022-01-18 12:21:23,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:23,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 5362 transitions. [2022-01-18 12:21:23,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:21:23,916 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:21:23,916 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:21:23,932 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Ended with exit code 0 [2022-01-18 12:21:24,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,122 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:21:24,123 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:21:24,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:21:24,124 INFO L85 PathProgramCache]: Analyzing trace with hash -80855419, now seen corresponding path program 73 times [2022-01-18 12:21:24,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:21:24,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906008565] [2022-01-18 12:21:24,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:21:24,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:21:24,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:21:24,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:24,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:21:24,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906008565] [2022-01-18 12:21:24,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906008565] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:21:24,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855266726] [2022-01-18 12:21:24,321 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:21:24,322 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:21:24,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:21:24,322 INFO L229 MonitoredProcess]: Starting monitored process 123 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:21:24,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2022-01-18 12:21:24,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:21:24,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:21:24,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:21:24,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:24,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:21:25,182 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:25,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855266726] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:21:25,183 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:21:25,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2022-01-18 12:21:25,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120687862] [2022-01-18 12:21:25,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:21:25,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 12:21:25,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:21:25,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 12:21:25,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1097, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 12:21:25,184 INFO L87 Difference]: Start difference. First operand 1916 states and 5362 transitions. Second operand has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:26,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:21:26,574 INFO L93 Difference]: Finished difference Result 2795 states and 7547 transitions. [2022-01-18 12:21:26,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 12:21:26,574 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:21:26,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:21:26,578 INFO L225 Difference]: With dead ends: 2795 [2022-01-18 12:21:26,578 INFO L226 Difference]: Without dead ends: 2744 [2022-01-18 12:21:26,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1096 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=778, Invalid=3778, Unknown=0, NotChecked=0, Total=4556 [2022-01-18 12:21:26,579 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 608 mSDsluCounter, 2447 mSDsCounter, 0 mSdLazyCounter, 1231 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 2469 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:21:26,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [608 Valid, 2469 Invalid, 1310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1231 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:21:26,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2744 states. [2022-01-18 12:21:26,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2744 to 1940. [2022-01-18 12:21:26,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1940 states, 1939 states have (on average 2.8076328004125837) internal successors, (5444), 1939 states have internal predecessors, (5444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:26,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1940 states to 1940 states and 5444 transitions. [2022-01-18 12:21:26,605 INFO L78 Accepts]: Start accepts. Automaton has 1940 states and 5444 transitions. Word has length 72 [2022-01-18 12:21:26,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:21:26,605 INFO L470 AbstractCegarLoop]: Abstraction has 1940 states and 5444 transitions. [2022-01-18 12:21:26,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:26,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1940 states and 5444 transitions. [2022-01-18 12:21:26,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:21:26,607 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:21:26,607 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:21:26,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Forceful destruction successful, exit code 0 [2022-01-18 12:21:26,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128,123 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:21:26,808 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:21:26,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:21:26,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1352592889, now seen corresponding path program 74 times [2022-01-18 12:21:26,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:21:26,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394863017] [2022-01-18 12:21:26,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:21:26,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:21:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:21:27,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:27,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:21:27,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394863017] [2022-01-18 12:21:27,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394863017] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:21:27,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165341800] [2022-01-18 12:21:27,011 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:21:27,011 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:21:27,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:21:27,012 INFO L229 MonitoredProcess]: Starting monitored process 124 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:21:27,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2022-01-18 12:21:27,112 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:21:27,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:21:27,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:21:27,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:21:27,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:27,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:21:27,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:27,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165341800] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:21:27,899 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:21:27,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2022-01-18 12:21:27,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765252672] [2022-01-18 12:21:27,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:21:27,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 12:21:27,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:21:27,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 12:21:27,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1091, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 12:21:27,900 INFO L87 Difference]: Start difference. First operand 1940 states and 5444 transitions. Second operand has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:29,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:21:29,069 INFO L93 Difference]: Finished difference Result 2685 states and 7338 transitions. [2022-01-18 12:21:29,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-18 12:21:29,069 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:21:29,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:21:29,073 INFO L225 Difference]: With dead ends: 2685 [2022-01-18 12:21:29,073 INFO L226 Difference]: Without dead ends: 2604 [2022-01-18 12:21:29,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 869 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=601, Invalid=3059, Unknown=0, NotChecked=0, Total=3660 [2022-01-18 12:21:29,074 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 435 mSDsluCounter, 2755 mSDsCounter, 0 mSdLazyCounter, 1255 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 2778 SdHoareTripleChecker+Invalid, 1321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:21:29,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [435 Valid, 2778 Invalid, 1321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1255 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:21:29,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2604 states. [2022-01-18 12:21:29,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2604 to 1916. [2022-01-18 12:21:29,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1916 states, 1915 states have (on average 2.797911227154047) internal successors, (5358), 1915 states have internal predecessors, (5358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:29,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 5358 transitions. [2022-01-18 12:21:29,099 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 5358 transitions. Word has length 72 [2022-01-18 12:21:29,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:21:29,099 INFO L470 AbstractCegarLoop]: Abstraction has 1916 states and 5358 transitions. [2022-01-18 12:21:29,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:29,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 5358 transitions. [2022-01-18 12:21:29,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:21:29,101 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:21:29,101 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:21:29,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Forceful destruction successful, exit code 0 [2022-01-18 12:21:29,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2022-01-18 12:21:29,302 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:21:29,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:21:29,302 INFO L85 PathProgramCache]: Analyzing trace with hash 505199939, now seen corresponding path program 75 times [2022-01-18 12:21:29,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:21:29,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170141320] [2022-01-18 12:21:29,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:21:29,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:21:29,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:21:29,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:29,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:21:29,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170141320] [2022-01-18 12:21:29,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170141320] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:21:29,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838023652] [2022-01-18 12:21:29,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:21:29,557 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:21:29,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:21:29,558 INFO L229 MonitoredProcess]: Starting monitored process 125 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:21:29,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2022-01-18 12:21:29,670 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 12:21:29,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:21:29,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:21:29,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:21:30,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:30,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:21:30,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:30,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838023652] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:21:30,473 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:21:30,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2022-01-18 12:21:30,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132512636] [2022-01-18 12:21:30,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:21:30,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 12:21:30,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:21:30,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 12:21:30,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1094, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 12:21:30,474 INFO L87 Difference]: Start difference. First operand 1916 states and 5358 transitions. Second operand has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:31,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:21:31,714 INFO L93 Difference]: Finished difference Result 2603 states and 7077 transitions. [2022-01-18 12:21:31,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 12:21:31,715 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:21:31,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:21:31,719 INFO L225 Difference]: With dead ends: 2603 [2022-01-18 12:21:31,719 INFO L226 Difference]: Without dead ends: 2552 [2022-01-18 12:21:31,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 890 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=659, Invalid=3247, Unknown=0, NotChecked=0, Total=3906 [2022-01-18 12:21:31,719 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 498 mSDsluCounter, 2370 mSDsCounter, 0 mSdLazyCounter, 1227 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 2420 SdHoareTripleChecker+Invalid, 1316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:21:31,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [498 Valid, 2420 Invalid, 1316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1227 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:21:31,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2552 states. [2022-01-18 12:21:31,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2552 to 1908. [2022-01-18 12:21:31,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1908 states, 1907 states have (on average 2.798112218143681) internal successors, (5336), 1907 states have internal predecessors, (5336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:31,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1908 states to 1908 states and 5336 transitions. [2022-01-18 12:21:31,744 INFO L78 Accepts]: Start accepts. Automaton has 1908 states and 5336 transitions. Word has length 72 [2022-01-18 12:21:31,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:21:31,744 INFO L470 AbstractCegarLoop]: Abstraction has 1908 states and 5336 transitions. [2022-01-18 12:21:31,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:31,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1908 states and 5336 transitions. [2022-01-18 12:21:31,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:21:31,754 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:21:31,754 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:21:31,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Forceful destruction successful, exit code 0 [2022-01-18 12:21:31,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,125 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:21:31,955 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:21:31,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:21:31,955 INFO L85 PathProgramCache]: Analyzing trace with hash -403353383, now seen corresponding path program 76 times [2022-01-18 12:21:31,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:21:31,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905138441] [2022-01-18 12:21:31,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:21:31,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:21:31,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:21:32,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:32,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:21:32,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905138441] [2022-01-18 12:21:32,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905138441] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:21:32,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73332653] [2022-01-18 12:21:32,177 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:21:32,177 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:21:32,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:21:32,178 INFO L229 MonitoredProcess]: Starting monitored process 126 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:21:32,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2022-01-18 12:21:32,277 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:21:32,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:21:32,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:21:32,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:21:32,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:32,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:21:33,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:33,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73332653] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:21:33,065 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:21:33,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2022-01-18 12:21:33,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416527797] [2022-01-18 12:21:33,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:21:33,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 12:21:33,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:21:33,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 12:21:33,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1076, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 12:21:33,067 INFO L87 Difference]: Start difference. First operand 1908 states and 5336 transitions. Second operand has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:34,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:21:34,214 INFO L93 Difference]: Finished difference Result 2517 states and 6882 transitions. [2022-01-18 12:21:34,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 12:21:34,215 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:21:34,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:21:34,218 INFO L225 Difference]: With dead ends: 2517 [2022-01-18 12:21:34,218 INFO L226 Difference]: Without dead ends: 2466 [2022-01-18 12:21:34,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1012 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=716, Invalid=3316, Unknown=0, NotChecked=0, Total=4032 [2022-01-18 12:21:34,219 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 411 mSDsluCounter, 2302 mSDsCounter, 0 mSdLazyCounter, 1125 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 2353 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:21:34,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [411 Valid, 2353 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1125 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:21:34,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2466 states. [2022-01-18 12:21:34,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2466 to 1896. [2022-01-18 12:21:34,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1896 states, 1895 states have (on average 2.7984168865435355) internal successors, (5303), 1895 states have internal predecessors, (5303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:34,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1896 states to 1896 states and 5303 transitions. [2022-01-18 12:21:34,254 INFO L78 Accepts]: Start accepts. Automaton has 1896 states and 5303 transitions. Word has length 72 [2022-01-18 12:21:34,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:21:34,254 INFO L470 AbstractCegarLoop]: Abstraction has 1896 states and 5303 transitions. [2022-01-18 12:21:34,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:34,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1896 states and 5303 transitions. [2022-01-18 12:21:34,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:21:34,256 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:21:34,256 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:21:34,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Forceful destruction successful, exit code 0 [2022-01-18 12:21:34,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,126 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:21:34,471 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:21:34,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:21:34,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1054018845, now seen corresponding path program 50 times [2022-01-18 12:21:34,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:21:34,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195778911] [2022-01-18 12:21:34,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:21:34,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:21:34,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:21:34,652 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:34,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:21:34,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195778911] [2022-01-18 12:21:34,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195778911] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:21:34,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256600868] [2022-01-18 12:21:34,653 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:21:34,653 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:21:34,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:21:34,654 INFO L229 MonitoredProcess]: Starting monitored process 127 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:21:34,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2022-01-18 12:21:34,754 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:21:34,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:21:34,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 12:21:34,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:21:35,319 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:35,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:21:35,922 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:35,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256600868] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:21:35,923 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:21:35,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-01-18 12:21:35,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181225820] [2022-01-18 12:21:35,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:21:35,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 12:21:35,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:21:35,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 12:21:35,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1852, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 12:21:35,924 INFO L87 Difference]: Start difference. First operand 1896 states and 5303 transitions. Second operand has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:38,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:21:38,097 INFO L93 Difference]: Finished difference Result 3948 states and 10319 transitions. [2022-01-18 12:21:38,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-18 12:21:38,097 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:21:38,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:21:38,103 INFO L225 Difference]: With dead ends: 3948 [2022-01-18 12:21:38,103 INFO L226 Difference]: Without dead ends: 3846 [2022-01-18 12:21:38,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2614 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1133, Invalid=8373, Unknown=0, NotChecked=0, Total=9506 [2022-01-18 12:21:38,104 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 1288 mSDsluCounter, 3771 mSDsCounter, 0 mSdLazyCounter, 1487 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1288 SdHoareTripleChecker+Valid, 3802 SdHoareTripleChecker+Invalid, 1564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:21:38,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1288 Valid, 3802 Invalid, 1564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1487 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:21:38,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3846 states. [2022-01-18 12:21:38,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3846 to 1896. [2022-01-18 12:21:38,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1896 states, 1895 states have (on average 2.7984168865435355) internal successors, (5303), 1895 states have internal predecessors, (5303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:38,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1896 states to 1896 states and 5303 transitions. [2022-01-18 12:21:38,136 INFO L78 Accepts]: Start accepts. Automaton has 1896 states and 5303 transitions. Word has length 72 [2022-01-18 12:21:38,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:21:38,136 INFO L470 AbstractCegarLoop]: Abstraction has 1896 states and 5303 transitions. [2022-01-18 12:21:38,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:38,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1896 states and 5303 transitions. [2022-01-18 12:21:38,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:21:38,139 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:21:38,139 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:21:38,155 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Ended with exit code 0 [2022-01-18 12:21:38,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,127 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:21:38,339 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:21:38,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:21:38,339 INFO L85 PathProgramCache]: Analyzing trace with hash 954873125, now seen corresponding path program 77 times [2022-01-18 12:21:38,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:21:38,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418782041] [2022-01-18 12:21:38,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:21:38,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:21:38,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:21:38,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:38,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:21:38,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418782041] [2022-01-18 12:21:38,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418782041] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:21:38,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386321432] [2022-01-18 12:21:38,560 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:21:38,560 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:21:38,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:21:38,561 INFO L229 MonitoredProcess]: Starting monitored process 128 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:21:38,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2022-01-18 12:21:38,660 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 12:21:38,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:21:38,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:21:38,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:21:39,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:39,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:21:39,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:39,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386321432] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:21:39,488 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:21:39,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 12:21:39,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899647520] [2022-01-18 12:21:39,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:21:39,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 12:21:39,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:21:39,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 12:21:39,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1173, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 12:21:39,489 INFO L87 Difference]: Start difference. First operand 1896 states and 5303 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:40,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:21:40,955 INFO L93 Difference]: Finished difference Result 2820 states and 7639 transitions. [2022-01-18 12:21:40,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 12:21:40,956 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:21:40,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:21:40,960 INFO L225 Difference]: With dead ends: 2820 [2022-01-18 12:21:40,960 INFO L226 Difference]: Without dead ends: 2769 [2022-01-18 12:21:40,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 947 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=684, Invalid=3738, Unknown=0, NotChecked=0, Total=4422 [2022-01-18 12:21:40,961 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 430 mSDsluCounter, 3118 mSDsCounter, 0 mSdLazyCounter, 1515 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 3169 SdHoareTripleChecker+Invalid, 1571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:21:40,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [430 Valid, 3169 Invalid, 1571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1515 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:21:40,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2769 states. [2022-01-18 12:21:40,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2769 to 1912. [2022-01-18 12:21:40,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1912 states, 1911 states have (on average 2.8001046572475143) internal successors, (5351), 1911 states have internal predecessors, (5351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:40,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1912 states to 1912 states and 5351 transitions. [2022-01-18 12:21:40,987 INFO L78 Accepts]: Start accepts. Automaton has 1912 states and 5351 transitions. Word has length 72 [2022-01-18 12:21:40,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:21:40,987 INFO L470 AbstractCegarLoop]: Abstraction has 1912 states and 5351 transitions. [2022-01-18 12:21:40,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:40,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1912 states and 5351 transitions. [2022-01-18 12:21:40,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:21:40,989 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:21:40,989 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:21:41,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Forceful destruction successful, exit code 0 [2022-01-18 12:21:41,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133,128 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:21:41,190 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:21:41,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:21:41,190 INFO L85 PathProgramCache]: Analyzing trace with hash 653599449, now seen corresponding path program 78 times [2022-01-18 12:21:41,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:21:41,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398039130] [2022-01-18 12:21:41,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:21:41,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:21:41,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:21:41,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:41,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:21:41,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398039130] [2022-01-18 12:21:41,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398039130] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:21:41,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005817869] [2022-01-18 12:21:41,420 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:21:41,420 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:21:41,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:21:41,422 INFO L229 MonitoredProcess]: Starting monitored process 129 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:21:41,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2022-01-18 12:21:41,520 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 12:21:41,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:21:41,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:21:41,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:21:41,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:41,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:21:42,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:42,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005817869] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:21:42,316 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:21:42,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 12:21:42,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935457918] [2022-01-18 12:21:42,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:21:42,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 12:21:42,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:21:42,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 12:21:42,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1153, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 12:21:42,317 INFO L87 Difference]: Start difference. First operand 1912 states and 5351 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:43,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:21:43,845 INFO L93 Difference]: Finished difference Result 2905 states and 7845 transitions. [2022-01-18 12:21:43,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 12:21:43,846 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:21:43,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:21:43,850 INFO L225 Difference]: With dead ends: 2905 [2022-01-18 12:21:43,850 INFO L226 Difference]: Without dead ends: 2854 [2022-01-18 12:21:43,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1184 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=904, Invalid=4066, Unknown=0, NotChecked=0, Total=4970 [2022-01-18 12:21:43,851 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 638 mSDsluCounter, 2970 mSDsCounter, 0 mSdLazyCounter, 1505 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 2987 SdHoareTripleChecker+Invalid, 1586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:21:43,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [638 Valid, 2987 Invalid, 1586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1505 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:21:43,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2854 states. [2022-01-18 12:21:43,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2854 to 1932. [2022-01-18 12:21:43,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1932 states, 1931 states have (on average 2.807871569135163) internal successors, (5422), 1931 states have internal predecessors, (5422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:43,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1932 states to 1932 states and 5422 transitions. [2022-01-18 12:21:43,877 INFO L78 Accepts]: Start accepts. Automaton has 1932 states and 5422 transitions. Word has length 72 [2022-01-18 12:21:43,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:21:43,877 INFO L470 AbstractCegarLoop]: Abstraction has 1932 states and 5422 transitions. [2022-01-18 12:21:43,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:43,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1932 states and 5422 transitions. [2022-01-18 12:21:43,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:21:43,879 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:21:43,879 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:21:43,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Forceful destruction successful, exit code 0 [2022-01-18 12:21:44,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2022-01-18 12:21:44,080 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:21:44,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:21:44,080 INFO L85 PathProgramCache]: Analyzing trace with hash 2087047757, now seen corresponding path program 79 times [2022-01-18 12:21:44,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:21:44,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234723561] [2022-01-18 12:21:44,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:21:44,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:21:44,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:21:44,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:44,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:21:44,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234723561] [2022-01-18 12:21:44,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234723561] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:21:44,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291310679] [2022-01-18 12:21:44,301 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:21:44,301 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:21:44,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:21:44,302 INFO L229 MonitoredProcess]: Starting monitored process 130 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:21:44,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Waiting until timeout for monitored process [2022-01-18 12:21:44,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:21:44,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:21:44,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:21:44,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:44,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:21:45,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:45,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291310679] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:21:45,226 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:21:45,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 12:21:45,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890611373] [2022-01-18 12:21:45,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:21:45,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 12:21:45,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:21:45,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 12:21:45,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1158, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 12:21:45,227 INFO L87 Difference]: Start difference. First operand 1932 states and 5422 transitions. Second operand has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:46,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:21:46,657 INFO L93 Difference]: Finished difference Result 2815 states and 7679 transitions. [2022-01-18 12:21:46,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 12:21:46,658 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:21:46,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:21:46,662 INFO L225 Difference]: With dead ends: 2815 [2022-01-18 12:21:46,662 INFO L226 Difference]: Without dead ends: 2734 [2022-01-18 12:21:46,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 968 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=693, Invalid=3467, Unknown=0, NotChecked=0, Total=4160 [2022-01-18 12:21:46,663 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 534 mSDsluCounter, 2758 mSDsCounter, 0 mSdLazyCounter, 1273 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 2818 SdHoareTripleChecker+Invalid, 1348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:21:46,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [534 Valid, 2818 Invalid, 1348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1273 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:21:46,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2734 states. [2022-01-18 12:21:46,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2734 to 1908. [2022-01-18 12:21:46,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1908 states, 1907 states have (on average 2.798112218143681) internal successors, (5336), 1907 states have internal predecessors, (5336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:46,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1908 states to 1908 states and 5336 transitions. [2022-01-18 12:21:46,688 INFO L78 Accepts]: Start accepts. Automaton has 1908 states and 5336 transitions. Word has length 72 [2022-01-18 12:21:46,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:21:46,688 INFO L470 AbstractCegarLoop]: Abstraction has 1908 states and 5336 transitions. [2022-01-18 12:21:46,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:46,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1908 states and 5336 transitions. [2022-01-18 12:21:46,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:21:46,690 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:21:46,691 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:21:46,706 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Ended with exit code 0 [2022-01-18 12:21:46,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2022-01-18 12:21:46,891 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:21:46,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:21:46,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1239654807, now seen corresponding path program 80 times [2022-01-18 12:21:46,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:21:46,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334432732] [2022-01-18 12:21:46,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:21:46,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:21:46,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:21:47,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:47,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:21:47,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334432732] [2022-01-18 12:21:47,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334432732] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:21:47,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479062506] [2022-01-18 12:21:47,097 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:21:47,097 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:21:47,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:21:47,098 INFO L229 MonitoredProcess]: Starting monitored process 131 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:21:47,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Waiting until timeout for monitored process [2022-01-18 12:21:47,201 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:21:47,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:21:47,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:21:47,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:21:47,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:47,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:21:48,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:48,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479062506] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:21:48,014 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:21:48,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 12:21:48,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40438690] [2022-01-18 12:21:48,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:21:48,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 12:21:48,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:21:48,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 12:21:48,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1149, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 12:21:48,015 INFO L87 Difference]: Start difference. First operand 1908 states and 5336 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:49,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:21:49,051 INFO L93 Difference]: Finished difference Result 2689 states and 7301 transitions. [2022-01-18 12:21:49,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-18 12:21:49,051 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:21:49,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:21:49,055 INFO L225 Difference]: With dead ends: 2689 [2022-01-18 12:21:49,055 INFO L226 Difference]: Without dead ends: 2638 [2022-01-18 12:21:49,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 795 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=588, Invalid=2718, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 12:21:49,056 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 441 mSDsluCounter, 2714 mSDsCounter, 0 mSdLazyCounter, 1320 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 2746 SdHoareTripleChecker+Invalid, 1372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:21:49,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [441 Valid, 2746 Invalid, 1372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1320 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:21:49,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2638 states. [2022-01-18 12:21:49,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2638 to 1904. [2022-01-18 12:21:49,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1904 states, 1903 states have (on average 2.7982133473462953) internal successors, (5325), 1903 states have internal predecessors, (5325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:49,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1904 states to 1904 states and 5325 transitions. [2022-01-18 12:21:49,080 INFO L78 Accepts]: Start accepts. Automaton has 1904 states and 5325 transitions. Word has length 72 [2022-01-18 12:21:49,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:21:49,080 INFO L470 AbstractCegarLoop]: Abstraction has 1904 states and 5325 transitions. [2022-01-18 12:21:49,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:49,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1904 states and 5325 transitions. [2022-01-18 12:21:49,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:21:49,082 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:21:49,082 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:21:49,099 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Ended with exit code 0 [2022-01-18 12:21:49,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 131 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2022-01-18 12:21:49,283 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:21:49,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:21:49,283 INFO L85 PathProgramCache]: Analyzing trace with hash 523647299, now seen corresponding path program 81 times [2022-01-18 12:21:49,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:21:49,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333267038] [2022-01-18 12:21:49,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:21:49,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:21:49,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:21:49,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:49,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:21:49,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333267038] [2022-01-18 12:21:49,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333267038] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:21:49,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257702188] [2022-01-18 12:21:49,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:21:49,542 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:21:49,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:21:49,543 INFO L229 MonitoredProcess]: Starting monitored process 132 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:21:49,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process [2022-01-18 12:21:49,646 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 12:21:49,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:21:49,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:21:49,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:21:50,049 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:50,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:21:50,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:50,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257702188] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:21:50,452 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:21:50,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 12:21:50,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721923004] [2022-01-18 12:21:50,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:21:50,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 12:21:50,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:21:50,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 12:21:50,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1149, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 12:21:50,453 INFO L87 Difference]: Start difference. First operand 1904 states and 5325 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:51,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:21:51,523 INFO L93 Difference]: Finished difference Result 2749 states and 7462 transitions. [2022-01-18 12:21:51,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-18 12:21:51,523 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:21:51,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:21:51,527 INFO L225 Difference]: With dead ends: 2749 [2022-01-18 12:21:51,527 INFO L226 Difference]: Without dead ends: 2698 [2022-01-18 12:21:51,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=631, Invalid=2909, Unknown=0, NotChecked=0, Total=3540 [2022-01-18 12:21:51,528 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 565 mSDsluCounter, 2054 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 2109 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:21:51,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [565 Valid, 2109 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1028 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:21:51,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2698 states. [2022-01-18 12:21:51,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2698 to 1900. [2022-01-18 12:21:51,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1900 states, 1899 states have (on average 2.7983149025803056) internal successors, (5314), 1899 states have internal predecessors, (5314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:51,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1900 states to 1900 states and 5314 transitions. [2022-01-18 12:21:51,552 INFO L78 Accepts]: Start accepts. Automaton has 1900 states and 5314 transitions. Word has length 72 [2022-01-18 12:21:51,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:21:51,552 INFO L470 AbstractCegarLoop]: Abstraction has 1900 states and 5314 transitions. [2022-01-18 12:21:51,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:51,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1900 states and 5314 transitions. [2022-01-18 12:21:51,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:21:51,554 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:21:51,554 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:21:51,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Forceful destruction successful, exit code 0 [2022-01-18 12:21:51,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,132 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:21:51,755 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:21:51,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:21:51,755 INFO L85 PathProgramCache]: Analyzing trace with hash -384906023, now seen corresponding path program 82 times [2022-01-18 12:21:51,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:21:51,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450204036] [2022-01-18 12:21:51,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:21:51,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:21:51,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:21:51,960 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:51,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:21:51,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450204036] [2022-01-18 12:21:51,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450204036] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:21:51,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380971548] [2022-01-18 12:21:51,961 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:21:51,961 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:21:51,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:21:51,962 INFO L229 MonitoredProcess]: Starting monitored process 133 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:21:51,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Waiting until timeout for monitored process [2022-01-18 12:21:52,064 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:21:52,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:21:52,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:21:52,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:21:52,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:52,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:21:52,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:52,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380971548] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:21:52,852 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:21:52,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 12:21:52,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130104483] [2022-01-18 12:21:52,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:21:52,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 12:21:52,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:21:52,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 12:21:52,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1137, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 12:21:52,853 INFO L87 Difference]: Start difference. First operand 1900 states and 5314 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:53,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:21:53,923 INFO L93 Difference]: Finished difference Result 2705 states and 7345 transitions. [2022-01-18 12:21:53,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 12:21:53,923 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:21:53,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:21:53,927 INFO L225 Difference]: With dead ends: 2705 [2022-01-18 12:21:53,927 INFO L226 Difference]: Without dead ends: 2654 [2022-01-18 12:21:53,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 919 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=684, Invalid=3098, Unknown=0, NotChecked=0, Total=3782 [2022-01-18 12:21:53,928 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 489 mSDsluCounter, 2261 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 2315 SdHoareTripleChecker+Invalid, 1209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:21:53,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [489 Valid, 2315 Invalid, 1209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1152 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:21:53,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2654 states. [2022-01-18 12:21:53,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2654 to 1888. [2022-01-18 12:21:53,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1888 states, 1887 states have (on average 2.798622151563328) internal successors, (5281), 1887 states have internal predecessors, (5281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:53,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 5281 transitions. [2022-01-18 12:21:53,953 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 5281 transitions. Word has length 72 [2022-01-18 12:21:53,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:21:53,953 INFO L470 AbstractCegarLoop]: Abstraction has 1888 states and 5281 transitions. [2022-01-18 12:21:53,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:53,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 5281 transitions. [2022-01-18 12:21:53,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:21:53,955 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:21:53,955 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:21:53,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Forceful destruction successful, exit code 0 [2022-01-18 12:21:54,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2022-01-18 12:21:54,156 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:21:54,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:21:54,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1379735521, now seen corresponding path program 83 times [2022-01-18 12:21:54,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:21:54,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237074987] [2022-01-18 12:21:54,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:21:54,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:21:54,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:21:54,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:54,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:21:54,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237074987] [2022-01-18 12:21:54,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237074987] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:21:54,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385624645] [2022-01-18 12:21:54,356 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:21:54,356 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:21:54,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:21:54,357 INFO L229 MonitoredProcess]: Starting monitored process 134 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:21:54,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Waiting until timeout for monitored process [2022-01-18 12:21:54,463 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 12:21:54,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:21:54,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:21:54,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:21:54,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:54,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:21:55,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:55,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385624645] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:21:55,266 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:21:55,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 12:21:55,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879420524] [2022-01-18 12:21:55,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:21:55,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 12:21:55,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:21:55,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 12:21:55,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1179, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 12:21:55,266 INFO L87 Difference]: Start difference. First operand 1888 states and 5281 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:56,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:21:56,545 INFO L93 Difference]: Finished difference Result 2736 states and 7412 transitions. [2022-01-18 12:21:56,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 12:21:56,545 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:21:56,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:21:56,549 INFO L225 Difference]: With dead ends: 2736 [2022-01-18 12:21:56,549 INFO L226 Difference]: Without dead ends: 2685 [2022-01-18 12:21:56,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 907 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=587, Invalid=3573, Unknown=0, NotChecked=0, Total=4160 [2022-01-18 12:21:56,550 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 450 mSDsluCounter, 2892 mSDsCounter, 0 mSdLazyCounter, 1373 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 2933 SdHoareTripleChecker+Invalid, 1435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:21:56,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [450 Valid, 2933 Invalid, 1435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1373 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:21:56,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2685 states. [2022-01-18 12:21:56,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2685 to 1896. [2022-01-18 12:21:56,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1896 states, 1895 states have (on average 2.800527704485488) internal successors, (5307), 1895 states have internal predecessors, (5307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:56,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1896 states to 1896 states and 5307 transitions. [2022-01-18 12:21:56,574 INFO L78 Accepts]: Start accepts. Automaton has 1896 states and 5307 transitions. Word has length 72 [2022-01-18 12:21:56,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:21:56,574 INFO L470 AbstractCegarLoop]: Abstraction has 1896 states and 5307 transitions. [2022-01-18 12:21:56,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:56,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1896 states and 5307 transitions. [2022-01-18 12:21:56,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:21:56,576 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:21:56,576 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:21:56,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Ended with exit code 0 [2022-01-18 12:21:56,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable139 [2022-01-18 12:21:56,777 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:21:56,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:21:56,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1078461845, now seen corresponding path program 84 times [2022-01-18 12:21:56,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:21:56,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690046052] [2022-01-18 12:21:56,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:21:56,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:21:56,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:21:56,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:56,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:21:56,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690046052] [2022-01-18 12:21:56,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690046052] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:21:56,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781938368] [2022-01-18 12:21:56,982 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:21:56,982 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:21:56,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:21:56,983 INFO L229 MonitoredProcess]: Starting monitored process 135 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:21:56,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Waiting until timeout for monitored process [2022-01-18 12:21:57,089 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 12:21:57,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:21:57,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:21:57,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:21:57,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:57,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:21:57,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:57,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781938368] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:21:57,887 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:21:57,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 12:21:57,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117182406] [2022-01-18 12:21:57,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:21:57,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 12:21:57,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:21:57,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 12:21:57,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1173, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 12:21:57,888 INFO L87 Difference]: Start difference. First operand 1896 states and 5307 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:59,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:21:59,468 INFO L93 Difference]: Finished difference Result 2862 states and 7713 transitions. [2022-01-18 12:21:59,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 12:21:59,469 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:21:59,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:21:59,473 INFO L225 Difference]: With dead ends: 2862 [2022-01-18 12:21:59,473 INFO L226 Difference]: Without dead ends: 2811 [2022-01-18 12:21:59,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1170 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=832, Invalid=4280, Unknown=0, NotChecked=0, Total=5112 [2022-01-18 12:21:59,474 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 752 mSDsluCounter, 2516 mSDsCounter, 0 mSdLazyCounter, 1230 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 2534 SdHoareTripleChecker+Invalid, 1314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:21:59,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [752 Valid, 2534 Invalid, 1314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1230 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:21:59,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2811 states. [2022-01-18 12:21:59,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2811 to 1920. [2022-01-18 12:21:59,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1920 states, 1919 states have (on average 2.80823345492444) internal successors, (5389), 1919 states have internal predecessors, (5389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:59,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 5389 transitions. [2022-01-18 12:21:59,507 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 5389 transitions. Word has length 72 [2022-01-18 12:21:59,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:21:59,507 INFO L470 AbstractCegarLoop]: Abstraction has 1920 states and 5389 transitions. [2022-01-18 12:21:59,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:59,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 5389 transitions. [2022-01-18 12:21:59,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:21:59,509 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:21:59,509 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:21:59,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Forceful destruction successful, exit code 0 [2022-01-18 12:21:59,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,135 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:21:59,709 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:21:59,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:21:59,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1783057143, now seen corresponding path program 85 times [2022-01-18 12:21:59,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:21:59,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987943091] [2022-01-18 12:21:59,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:21:59,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:21:59,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:21:59,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:59,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:21:59,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987943091] [2022-01-18 12:21:59,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987943091] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:21:59,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239710218] [2022-01-18 12:21:59,898 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:21:59,898 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:21:59,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:21:59,899 INFO L229 MonitoredProcess]: Starting monitored process 136 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:21:59,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Waiting until timeout for monitored process [2022-01-18 12:22:00,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:22:00,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:22:00,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:22:00,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:00,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:22:00,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:00,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239710218] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:22:00,811 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:22:00,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 12:22:00,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295131974] [2022-01-18 12:22:00,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:22:00,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 12:22:00,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:22:00,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 12:22:00,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1169, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 12:22:00,812 INFO L87 Difference]: Start difference. First operand 1920 states and 5389 transitions. Second operand has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:02,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:22:02,196 INFO L93 Difference]: Finished difference Result 2760 states and 7526 transitions. [2022-01-18 12:22:02,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 12:22:02,196 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:22:02,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:22:02,200 INFO L225 Difference]: With dead ends: 2760 [2022-01-18 12:22:02,200 INFO L226 Difference]: Without dead ends: 2679 [2022-01-18 12:22:02,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 909 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=626, Invalid=3406, Unknown=0, NotChecked=0, Total=4032 [2022-01-18 12:22:02,200 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 496 mSDsluCounter, 2551 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 2607 SdHoareTripleChecker+Invalid, 1289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:22:02,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [496 Valid, 2607 Invalid, 1289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1216 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:22:02,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2679 states. [2022-01-18 12:22:02,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2679 to 1896. [2022-01-18 12:22:02,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1896 states, 1895 states have (on average 2.7984168865435355) internal successors, (5303), 1895 states have internal predecessors, (5303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:02,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1896 states to 1896 states and 5303 transitions. [2022-01-18 12:22:02,225 INFO L78 Accepts]: Start accepts. Automaton has 1896 states and 5303 transitions. Word has length 72 [2022-01-18 12:22:02,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:22:02,225 INFO L470 AbstractCegarLoop]: Abstraction has 1896 states and 5303 transitions. [2022-01-18 12:22:02,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:02,225 INFO L276 IsEmpty]: Start isEmpty. Operand 1896 states and 5303 transitions. [2022-01-18 12:22:02,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:22:02,227 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:22:02,227 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:22:02,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Forceful destruction successful, exit code 0 [2022-01-18 12:22:02,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,136 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:22:02,427 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:22:02,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:22:02,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1664517203, now seen corresponding path program 86 times [2022-01-18 12:22:02,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:22:02,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321926079] [2022-01-18 12:22:02,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:22:02,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:22:02,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:22:02,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:02,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:22:02,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321926079] [2022-01-18 12:22:02,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321926079] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:22:02,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863075405] [2022-01-18 12:22:02,661 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:22:02,661 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:22:02,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:22:02,662 INFO L229 MonitoredProcess]: Starting monitored process 137 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:22:02,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Waiting until timeout for monitored process [2022-01-18 12:22:02,772 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:22:02,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:22:02,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:22:02,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:22:03,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:03,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:22:03,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:03,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863075405] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:22:03,608 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:22:03,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 12:22:03,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925803934] [2022-01-18 12:22:03,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:22:03,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 12:22:03,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:22:03,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 12:22:03,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1168, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 12:22:03,609 INFO L87 Difference]: Start difference. First operand 1896 states and 5303 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:04,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:22:04,867 INFO L93 Difference]: Finished difference Result 2674 states and 7258 transitions. [2022-01-18 12:22:04,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 12:22:04,867 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:22:04,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:22:04,871 INFO L225 Difference]: With dead ends: 2674 [2022-01-18 12:22:04,871 INFO L226 Difference]: Without dead ends: 2623 [2022-01-18 12:22:04,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 896 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=668, Invalid=3492, Unknown=0, NotChecked=0, Total=4160 [2022-01-18 12:22:04,871 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 609 mSDsluCounter, 2124 mSDsCounter, 0 mSdLazyCounter, 1104 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 2183 SdHoareTripleChecker+Invalid, 1207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:22:04,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [609 Valid, 2183 Invalid, 1207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1104 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:22:04,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2623 states. [2022-01-18 12:22:04,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2623 to 1888. [2022-01-18 12:22:04,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1888 states, 1887 states have (on average 2.798622151563328) internal successors, (5281), 1887 states have internal predecessors, (5281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:04,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 5281 transitions. [2022-01-18 12:22:04,894 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 5281 transitions. Word has length 72 [2022-01-18 12:22:04,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:22:04,894 INFO L470 AbstractCegarLoop]: Abstraction has 1888 states and 5281 transitions. [2022-01-18 12:22:04,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:04,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 5281 transitions. [2022-01-18 12:22:04,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:22:04,896 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:22:04,896 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:22:04,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Forceful destruction successful, exit code 0 [2022-01-18 12:22:05,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,137 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:22:05,097 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:22:05,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:22:05,097 INFO L85 PathProgramCache]: Analyzing trace with hash 755963881, now seen corresponding path program 87 times [2022-01-18 12:22:05,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:22:05,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135966538] [2022-01-18 12:22:05,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:22:05,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:22:05,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:22:05,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:05,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:22:05,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135966538] [2022-01-18 12:22:05,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135966538] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:22:05,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508920048] [2022-01-18 12:22:05,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:22:05,321 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:22:05,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:22:05,322 INFO L229 MonitoredProcess]: Starting monitored process 138 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:22:05,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Waiting until timeout for monitored process [2022-01-18 12:22:05,431 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 12:22:05,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:22:05,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:22:05,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:22:05,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:05,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:22:06,253 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:06,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508920048] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:22:06,254 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:22:06,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 12:22:06,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321152596] [2022-01-18 12:22:06,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:22:06,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 12:22:06,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:22:06,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 12:22:06,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1152, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 12:22:06,255 INFO L87 Difference]: Start difference. First operand 1888 states and 5281 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:07,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:22:07,515 INFO L93 Difference]: Finished difference Result 2662 states and 7229 transitions. [2022-01-18 12:22:07,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 12:22:07,515 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:22:07,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:22:07,518 INFO L225 Difference]: With dead ends: 2662 [2022-01-18 12:22:07,519 INFO L226 Difference]: Without dead ends: 2611 [2022-01-18 12:22:07,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1002 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=726, Invalid=3564, Unknown=0, NotChecked=0, Total=4290 [2022-01-18 12:22:07,519 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 529 mSDsluCounter, 2467 mSDsCounter, 0 mSdLazyCounter, 1236 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 2512 SdHoareTripleChecker+Invalid, 1300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:22:07,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [529 Valid, 2512 Invalid, 1300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1236 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:22:07,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2611 states. [2022-01-18 12:22:07,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2611 to 1872. [2022-01-18 12:22:07,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1872 states, 1871 states have (on average 2.7990379476215925) internal successors, (5237), 1871 states have internal predecessors, (5237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:07,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1872 states to 1872 states and 5237 transitions. [2022-01-18 12:22:07,542 INFO L78 Accepts]: Start accepts. Automaton has 1872 states and 5237 transitions. Word has length 72 [2022-01-18 12:22:07,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:22:07,542 INFO L470 AbstractCegarLoop]: Abstraction has 1872 states and 5237 transitions. [2022-01-18 12:22:07,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:07,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1872 states and 5237 transitions. [2022-01-18 12:22:07,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:22:07,544 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:22:07,544 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:22:07,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Forceful destruction successful, exit code 0 [2022-01-18 12:22:07,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable143 [2022-01-18 12:22:07,744 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:22:07,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:22:07,745 INFO L85 PathProgramCache]: Analyzing trace with hash 748900975, now seen corresponding path program 51 times [2022-01-18 12:22:07,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:22:07,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823738048] [2022-01-18 12:22:07,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:22:07,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:22:07,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:22:07,922 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:07,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:22:07,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823738048] [2022-01-18 12:22:07,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823738048] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:22:07,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237672225] [2022-01-18 12:22:07,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:22:07,922 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:22:07,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:22:07,923 INFO L229 MonitoredProcess]: Starting monitored process 139 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:22:07,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Waiting until timeout for monitored process [2022-01-18 12:22:08,034 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 12:22:08,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:22:08,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 12:22:08,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:22:08,606 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:08,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:22:09,230 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:09,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237672225] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:22:09,231 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:22:09,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-01-18 12:22:09,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431448191] [2022-01-18 12:22:09,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:22:09,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 12:22:09,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:22:09,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 12:22:09,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=1854, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 12:22:09,232 INFO L87 Difference]: Start difference. First operand 1872 states and 5237 transitions. Second operand has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:13,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:22:13,119 INFO L93 Difference]: Finished difference Result 4380 states and 11515 transitions. [2022-01-18 12:22:13,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-01-18 12:22:13,120 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:22:13,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:22:13,126 INFO L225 Difference]: With dead ends: 4380 [2022-01-18 12:22:13,126 INFO L226 Difference]: Without dead ends: 4278 [2022-01-18 12:22:13,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5113 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1827, Invalid=14685, Unknown=0, NotChecked=0, Total=16512 [2022-01-18 12:22:13,127 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 1244 mSDsluCounter, 4719 mSDsCounter, 0 mSdLazyCounter, 2005 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1244 SdHoareTripleChecker+Valid, 4728 SdHoareTripleChecker+Invalid, 2105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 2005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 12:22:13,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1244 Valid, 4728 Invalid, 2105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 2005 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 12:22:13,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4278 states. [2022-01-18 12:22:13,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4278 to 1888. [2022-01-18 12:22:13,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1888 states, 1887 states have (on average 2.807101218865925) internal successors, (5297), 1887 states have internal predecessors, (5297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:13,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 5297 transitions. [2022-01-18 12:22:13,160 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 5297 transitions. Word has length 72 [2022-01-18 12:22:13,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:22:13,160 INFO L470 AbstractCegarLoop]: Abstraction has 1888 states and 5297 transitions. [2022-01-18 12:22:13,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:13,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 5297 transitions. [2022-01-18 12:22:13,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:22:13,162 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:22:13,162 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:22:13,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Forceful destruction successful, exit code 0 [2022-01-18 12:22:13,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 139 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2022-01-18 12:22:13,363 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:22:13,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:22:13,363 INFO L85 PathProgramCache]: Analyzing trace with hash -12326635, now seen corresponding path program 88 times [2022-01-18 12:22:13,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:22:13,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450175898] [2022-01-18 12:22:13,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:22:13,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:22:13,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:22:13,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:13,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:22:13,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450175898] [2022-01-18 12:22:13,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450175898] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:22:13,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578120700] [2022-01-18 12:22:13,553 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:22:13,553 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:22:13,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:22:13,554 INFO L229 MonitoredProcess]: Starting monitored process 140 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:22:13,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Waiting until timeout for monitored process [2022-01-18 12:22:13,658 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:22:13,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:22:13,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:22:13,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:22:14,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:14,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:22:14,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:14,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578120700] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:22:14,460 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:22:14,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 12:22:14,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017343029] [2022-01-18 12:22:14,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:22:14,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 12:22:14,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:22:14,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 12:22:14,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1183, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 12:22:14,461 INFO L87 Difference]: Start difference. First operand 1888 states and 5297 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:15,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:22:15,976 INFO L93 Difference]: Finished difference Result 2741 states and 7416 transitions. [2022-01-18 12:22:15,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 12:22:15,977 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:22:15,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:22:15,981 INFO L225 Difference]: With dead ends: 2741 [2022-01-18 12:22:15,981 INFO L226 Difference]: Without dead ends: 2690 [2022-01-18 12:22:15,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1025 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=619, Invalid=3937, Unknown=0, NotChecked=0, Total=4556 [2022-01-18 12:22:15,981 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 479 mSDsluCounter, 3037 mSDsCounter, 0 mSdLazyCounter, 1527 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 3086 SdHoareTripleChecker+Invalid, 1593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:22:15,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [479 Valid, 3086 Invalid, 1593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1527 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:22:15,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2690 states. [2022-01-18 12:22:16,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2690 to 1892. [2022-01-18 12:22:16,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1892 states, 1891 states have (on average 2.809095716552089) internal successors, (5312), 1891 states have internal predecessors, (5312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:16,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1892 states to 1892 states and 5312 transitions. [2022-01-18 12:22:16,005 INFO L78 Accepts]: Start accepts. Automaton has 1892 states and 5312 transitions. Word has length 72 [2022-01-18 12:22:16,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:22:16,005 INFO L470 AbstractCegarLoop]: Abstraction has 1892 states and 5312 transitions. [2022-01-18 12:22:16,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:16,006 INFO L276 IsEmpty]: Start isEmpty. Operand 1892 states and 5312 transitions. [2022-01-18 12:22:16,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:22:16,008 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:22:16,008 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:22:16,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Forceful destruction successful, exit code 0 [2022-01-18 12:22:16,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable145 [2022-01-18 12:22:16,210 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:22:16,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:22:16,210 INFO L85 PathProgramCache]: Analyzing trace with hash -313600311, now seen corresponding path program 89 times [2022-01-18 12:22:16,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:22:16,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863832827] [2022-01-18 12:22:16,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:22:16,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:22:16,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:22:16,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:16,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:22:16,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863832827] [2022-01-18 12:22:16,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863832827] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:22:16,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383506316] [2022-01-18 12:22:16,423 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:22:16,423 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:22:16,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:22:16,424 INFO L229 MonitoredProcess]: Starting monitored process 141 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:22:16,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Waiting until timeout for monitored process [2022-01-18 12:22:16,531 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 12:22:16,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:22:16,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:22:16,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:22:16,937 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:16,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:22:17,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:17,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383506316] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:22:17,351 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:22:17,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 12:22:17,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881201854] [2022-01-18 12:22:17,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:22:17,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 12:22:17,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:22:17,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 12:22:17,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1177, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 12:22:17,352 INFO L87 Difference]: Start difference. First operand 1892 states and 5312 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:19,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:22:19,182 INFO L93 Difference]: Finished difference Result 2868 states and 7714 transitions. [2022-01-18 12:22:19,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-18 12:22:19,182 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:22:19,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:22:19,186 INFO L225 Difference]: With dead ends: 2868 [2022-01-18 12:22:19,186 INFO L226 Difference]: Without dead ends: 2817 [2022-01-18 12:22:19,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1431 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=887, Invalid=4965, Unknown=0, NotChecked=0, Total=5852 [2022-01-18 12:22:19,187 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 735 mSDsluCounter, 3029 mSDsCounter, 0 mSdLazyCounter, 1563 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 3057 SdHoareTripleChecker+Invalid, 1651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:22:19,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [735 Valid, 3057 Invalid, 1651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1563 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:22:19,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2817 states. [2022-01-18 12:22:19,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2817 to 1892. [2022-01-18 12:22:19,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1892 states, 1891 states have (on average 2.81332628239027) internal successors, (5320), 1891 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:19,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1892 states to 1892 states and 5320 transitions. [2022-01-18 12:22:19,213 INFO L78 Accepts]: Start accepts. Automaton has 1892 states and 5320 transitions. Word has length 72 [2022-01-18 12:22:19,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:22:19,213 INFO L470 AbstractCegarLoop]: Abstraction has 1892 states and 5320 transitions. [2022-01-18 12:22:19,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:19,213 INFO L276 IsEmpty]: Start isEmpty. Operand 1892 states and 5320 transitions. [2022-01-18 12:22:19,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:22:19,215 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:22:19,215 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:22:19,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Forceful destruction successful, exit code 0 [2022-01-18 12:22:19,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 141 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2022-01-18 12:22:19,416 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:22:19,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:22:19,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1119847997, now seen corresponding path program 90 times [2022-01-18 12:22:19,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:22:19,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487430540] [2022-01-18 12:22:19,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:22:19,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:22:19,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:22:19,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:19,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:22:19,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487430540] [2022-01-18 12:22:19,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487430540] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:22:19,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716072248] [2022-01-18 12:22:19,626 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:22:19,626 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:22:19,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:22:19,627 INFO L229 MonitoredProcess]: Starting monitored process 142 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:22:19,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Waiting until timeout for monitored process [2022-01-18 12:22:19,737 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 12:22:19,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:22:19,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:22:19,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:22:20,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:20,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:22:20,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:20,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716072248] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:22:20,560 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:22:20,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 12:22:20,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296585512] [2022-01-18 12:22:20,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:22:20,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 12:22:20,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:22:20,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 12:22:20,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1173, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 12:22:20,561 INFO L87 Difference]: Start difference. First operand 1892 states and 5320 transitions. Second operand has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:22,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:22:22,091 INFO L93 Difference]: Finished difference Result 2750 states and 7483 transitions. [2022-01-18 12:22:22,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 12:22:22,092 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:22:22,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:22:22,096 INFO L225 Difference]: With dead ends: 2750 [2022-01-18 12:22:22,096 INFO L226 Difference]: Without dead ends: 2684 [2022-01-18 12:22:22,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=739, Invalid=4373, Unknown=0, NotChecked=0, Total=5112 [2022-01-18 12:22:22,097 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 625 mSDsluCounter, 2328 mSDsCounter, 0 mSdLazyCounter, 1104 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 2404 SdHoareTripleChecker+Invalid, 1194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:22:22,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [625 Valid, 2404 Invalid, 1194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1104 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:22:22,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2684 states. [2022-01-18 12:22:22,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2684 to 1876. [2022-01-18 12:22:22,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1876 states, 1875 states have (on average 2.8053333333333335) internal successors, (5260), 1875 states have internal predecessors, (5260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:22,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1876 states to 1876 states and 5260 transitions. [2022-01-18 12:22:22,123 INFO L78 Accepts]: Start accepts. Automaton has 1876 states and 5260 transitions. Word has length 72 [2022-01-18 12:22:22,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:22:22,123 INFO L470 AbstractCegarLoop]: Abstraction has 1876 states and 5260 transitions. [2022-01-18 12:22:22,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:22,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1876 states and 5260 transitions. [2022-01-18 12:22:22,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:22:22,125 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:22:22,125 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:22:22,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Forceful destruction successful, exit code 0 [2022-01-18 12:22:22,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 142 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2022-01-18 12:22:22,326 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:22:22,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:22:22,326 INFO L85 PathProgramCache]: Analyzing trace with hash 272455047, now seen corresponding path program 91 times [2022-01-18 12:22:22,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:22:22,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868985014] [2022-01-18 12:22:22,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:22:22,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:22:22,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:22:22,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:22,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:22:22,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868985014] [2022-01-18 12:22:22,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868985014] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:22:22,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385084443] [2022-01-18 12:22:22,528 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:22:22,528 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:22:22,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:22:22,529 INFO L229 MonitoredProcess]: Starting monitored process 143 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:22:22,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Waiting until timeout for monitored process [2022-01-18 12:22:22,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:22:22,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:22:22,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:22:23,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:23,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:22:23,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:23,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385084443] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:22:23,480 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:22:23,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 12:22:23,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236366858] [2022-01-18 12:22:23,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:22:23,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 12:22:23,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:22:23,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 12:22:23,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1184, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 12:22:23,481 INFO L87 Difference]: Start difference. First operand 1876 states and 5260 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:25,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:22:25,176 INFO L93 Difference]: Finished difference Result 2739 states and 7423 transitions. [2022-01-18 12:22:25,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 12:22:25,176 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:22:25,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:22:25,180 INFO L225 Difference]: With dead ends: 2739 [2022-01-18 12:22:25,180 INFO L226 Difference]: Without dead ends: 2688 [2022-01-18 12:22:25,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1208 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=724, Invalid=4678, Unknown=0, NotChecked=0, Total=5402 [2022-01-18 12:22:25,181 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 561 mSDsluCounter, 2824 mSDsCounter, 0 mSdLazyCounter, 1505 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 2888 SdHoareTripleChecker+Invalid, 1583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:22:25,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [561 Valid, 2888 Invalid, 1583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1505 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:22:25,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2688 states. [2022-01-18 12:22:25,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2688 to 1868. [2022-01-18 12:22:25,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1868 states, 1867 states have (on average 2.805570433851098) internal successors, (5238), 1867 states have internal predecessors, (5238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:25,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1868 states to 1868 states and 5238 transitions. [2022-01-18 12:22:25,212 INFO L78 Accepts]: Start accepts. Automaton has 1868 states and 5238 transitions. Word has length 72 [2022-01-18 12:22:25,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:22:25,212 INFO L470 AbstractCegarLoop]: Abstraction has 1868 states and 5238 transitions. [2022-01-18 12:22:25,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:25,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1868 states and 5238 transitions. [2022-01-18 12:22:25,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:22:25,214 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:22:25,214 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:22:25,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Forceful destruction successful, exit code 0 [2022-01-18 12:22:25,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable148 [2022-01-18 12:22:25,415 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:22:25,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:22:25,415 INFO L85 PathProgramCache]: Analyzing trace with hash -636098275, now seen corresponding path program 92 times [2022-01-18 12:22:25,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:22:25,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939872396] [2022-01-18 12:22:25,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:22:25,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:22:25,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:22:25,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:25,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:22:25,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939872396] [2022-01-18 12:22:25,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939872396] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:22:25,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565389655] [2022-01-18 12:22:25,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:22:25,609 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:22:25,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:22:25,610 INFO L229 MonitoredProcess]: Starting monitored process 144 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:22:25,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Waiting until timeout for monitored process [2022-01-18 12:22:25,720 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:22:25,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:22:25,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:22:25,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:22:26,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:26,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:22:26,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:26,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565389655] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:22:26,525 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:22:26,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 12:22:26,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683483860] [2022-01-18 12:22:26,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:22:26,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 12:22:26,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:22:26,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 12:22:26,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1170, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 12:22:26,526 INFO L87 Difference]: Start difference. First operand 1868 states and 5238 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:28,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:22:28,266 INFO L93 Difference]: Finished difference Result 2673 states and 7279 transitions. [2022-01-18 12:22:28,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-18 12:22:28,266 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:22:28,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:22:28,270 INFO L225 Difference]: With dead ends: 2673 [2022-01-18 12:22:28,270 INFO L226 Difference]: Without dead ends: 2622 [2022-01-18 12:22:28,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1523 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=860, Invalid=5302, Unknown=0, NotChecked=0, Total=6162 [2022-01-18 12:22:28,271 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 583 mSDsluCounter, 2646 mSDsCounter, 0 mSdLazyCounter, 1386 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 2728 SdHoareTripleChecker+Invalid, 1465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:22:28,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [583 Valid, 2728 Invalid, 1465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1386 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:22:28,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2622 states. [2022-01-18 12:22:28,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2622 to 1840. [2022-01-18 12:22:28,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1840 states, 1839 states have (on average 2.804241435562806) internal successors, (5157), 1839 states have internal predecessors, (5157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:28,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1840 states to 1840 states and 5157 transitions. [2022-01-18 12:22:28,293 INFO L78 Accepts]: Start accepts. Automaton has 1840 states and 5157 transitions. Word has length 72 [2022-01-18 12:22:28,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:22:28,294 INFO L470 AbstractCegarLoop]: Abstraction has 1840 states and 5157 transitions. [2022-01-18 12:22:28,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:28,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1840 states and 5157 transitions. [2022-01-18 12:22:28,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:22:28,296 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:22:28,296 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:22:28,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Forceful destruction successful, exit code 0 [2022-01-18 12:22:28,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 144 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable149 [2022-01-18 12:22:28,496 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:22:28,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:22:28,496 INFO L85 PathProgramCache]: Analyzing trace with hash -2052628847, now seen corresponding path program 93 times [2022-01-18 12:22:28,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:22:28,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267334552] [2022-01-18 12:22:28,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:22:28,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:22:28,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:22:28,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:28,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:22:28,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267334552] [2022-01-18 12:22:28,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267334552] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:22:28,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217403601] [2022-01-18 12:22:28,703 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:22:28,703 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:22:28,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:22:28,704 INFO L229 MonitoredProcess]: Starting monitored process 145 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:22:28,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Waiting until timeout for monitored process [2022-01-18 12:22:28,815 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 12:22:28,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:22:28,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:22:28,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:22:29,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:29,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:22:29,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:29,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217403601] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:22:29,513 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:22:29,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 34 [2022-01-18 12:22:29,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309352140] [2022-01-18 12:22:29,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:22:29,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 12:22:29,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:22:29,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 12:22:29,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=957, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 12:22:29,514 INFO L87 Difference]: Start difference. First operand 1840 states and 5157 transitions. Second operand has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:30,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:22:30,117 INFO L93 Difference]: Finished difference Result 2611 states and 7086 transitions. [2022-01-18 12:22:30,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-18 12:22:30,118 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:22:30,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:22:30,121 INFO L225 Difference]: With dead ends: 2611 [2022-01-18 12:22:30,122 INFO L226 Difference]: Without dead ends: 2560 [2022-01-18 12:22:30,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=427, Invalid=2023, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 12:22:30,122 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 347 mSDsluCounter, 1937 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 1982 SdHoareTripleChecker+Invalid, 900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:22:30,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [347 Valid, 1982 Invalid, 900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 863 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 12:22:30,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2560 states. [2022-01-18 12:22:30,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2560 to 1868. [2022-01-18 12:22:30,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1868 states, 1867 states have (on average 2.8012854847348687) internal successors, (5230), 1867 states have internal predecessors, (5230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:30,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1868 states to 1868 states and 5230 transitions. [2022-01-18 12:22:30,160 INFO L78 Accepts]: Start accepts. Automaton has 1868 states and 5230 transitions. Word has length 72 [2022-01-18 12:22:30,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:22:30,160 INFO L470 AbstractCegarLoop]: Abstraction has 1868 states and 5230 transitions. [2022-01-18 12:22:30,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:30,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1868 states and 5230 transitions. [2022-01-18 12:22:30,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:22:30,162 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:22:30,162 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:22:30,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Forceful destruction successful, exit code 0 [2022-01-18 12:22:30,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable150 [2022-01-18 12:22:30,363 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:22:30,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:22:30,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1771146751, now seen corresponding path program 94 times [2022-01-18 12:22:30,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:22:30,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43251077] [2022-01-18 12:22:30,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:22:30,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:22:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:22:30,564 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:30,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:22:30,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43251077] [2022-01-18 12:22:30,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43251077] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:22:30,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518274110] [2022-01-18 12:22:30,564 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:22:30,564 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:22:30,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:22:30,565 INFO L229 MonitoredProcess]: Starting monitored process 146 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:22:30,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Waiting until timeout for monitored process [2022-01-18 12:22:30,674 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:22:30,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:22:30,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:22:30,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:22:31,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:31,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:22:31,384 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:31,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518274110] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:22:31,384 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:22:31,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 34 [2022-01-18 12:22:31,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395507070] [2022-01-18 12:22:31,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:22:31,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 12:22:31,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:22:31,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 12:22:31,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=969, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 12:22:31,385 INFO L87 Difference]: Start difference. First operand 1868 states and 5230 transitions. Second operand has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:32,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:22:32,619 INFO L93 Difference]: Finished difference Result 2767 states and 7503 transitions. [2022-01-18 12:22:32,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 12:22:32,619 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:22:32,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:22:32,623 INFO L225 Difference]: With dead ends: 2767 [2022-01-18 12:22:32,623 INFO L226 Difference]: Without dead ends: 2716 [2022-01-18 12:22:32,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1122 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=764, Invalid=3658, Unknown=0, NotChecked=0, Total=4422 [2022-01-18 12:22:32,624 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 391 mSDsluCounter, 2529 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 2570 SdHoareTripleChecker+Invalid, 1276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:22:32,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [391 Valid, 2570 Invalid, 1276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1225 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:22:32,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2716 states. [2022-01-18 12:22:32,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2716 to 1884. [2022-01-18 12:22:32,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1884 states, 1883 states have (on average 2.802973977695167) internal successors, (5278), 1883 states have internal predecessors, (5278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:32,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 5278 transitions. [2022-01-18 12:22:32,662 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 5278 transitions. Word has length 72 [2022-01-18 12:22:32,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:22:32,662 INFO L470 AbstractCegarLoop]: Abstraction has 1884 states and 5278 transitions. [2022-01-18 12:22:32,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:32,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 5278 transitions. [2022-01-18 12:22:32,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:22:32,664 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:22:32,664 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:22:32,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Forceful destruction successful, exit code 0 [2022-01-18 12:22:32,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,146 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:22:32,865 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:22:32,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:22:32,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1469873075, now seen corresponding path program 95 times [2022-01-18 12:22:32,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:22:32,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68013210] [2022-01-18 12:22:32,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:22:32,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:22:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:22:33,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:33,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:22:33,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68013210] [2022-01-18 12:22:33,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68013210] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:22:33,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336198049] [2022-01-18 12:22:33,060 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:22:33,060 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:22:33,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:22:33,061 INFO L229 MonitoredProcess]: Starting monitored process 147 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:22:33,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Waiting until timeout for monitored process [2022-01-18 12:22:33,173 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:22:33,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:22:33,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:22:33,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:22:33,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:33,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:22:33,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:33,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336198049] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:22:33,889 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:22:33,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 34 [2022-01-18 12:22:33,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588695973] [2022-01-18 12:22:33,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:22:33,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 12:22:33,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:22:33,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 12:22:33,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=949, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 12:22:33,890 INFO L87 Difference]: Start difference. First operand 1884 states and 5278 transitions. Second operand has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:35,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:22:35,429 INFO L93 Difference]: Finished difference Result 2956 states and 7974 transitions. [2022-01-18 12:22:35,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-18 12:22:35,429 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:22:35,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:22:35,433 INFO L225 Difference]: With dead ends: 2956 [2022-01-18 12:22:35,433 INFO L226 Difference]: Without dead ends: 2905 [2022-01-18 12:22:35,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1689 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1172, Invalid=4834, Unknown=0, NotChecked=0, Total=6006 [2022-01-18 12:22:35,434 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 607 mSDsluCounter, 2187 mSDsCounter, 0 mSdLazyCounter, 1131 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 2244 SdHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:22:35,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [607 Valid, 2244 Invalid, 1191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1131 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:22:35,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2905 states. [2022-01-18 12:22:35,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2905 to 1900. [2022-01-18 12:22:35,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1900 states, 1899 states have (on average 2.810953133228015) internal successors, (5338), 1899 states have internal predecessors, (5338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:35,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1900 states to 1900 states and 5338 transitions. [2022-01-18 12:22:35,458 INFO L78 Accepts]: Start accepts. Automaton has 1900 states and 5338 transitions. Word has length 72 [2022-01-18 12:22:35,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:22:35,458 INFO L470 AbstractCegarLoop]: Abstraction has 1900 states and 5338 transitions. [2022-01-18 12:22:35,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:35,458 INFO L276 IsEmpty]: Start isEmpty. Operand 1900 states and 5338 transitions. [2022-01-18 12:22:35,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:22:35,460 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:22:35,460 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:22:35,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Forceful destruction successful, exit code 0 [2022-01-18 12:22:35,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,147 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:22:35,661 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:22:35,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:22:35,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1391645913, now seen corresponding path program 96 times [2022-01-18 12:22:35,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:22:35,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484112380] [2022-01-18 12:22:35,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:22:35,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:22:35,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:22:35,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:35,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:22:35,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484112380] [2022-01-18 12:22:35,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484112380] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:22:35,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491575956] [2022-01-18 12:22:35,870 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:22:35,870 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:22:35,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:22:35,871 INFO L229 MonitoredProcess]: Starting monitored process 148 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:22:35,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Waiting until timeout for monitored process [2022-01-18 12:22:35,982 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 12:22:35,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:22:35,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:22:35,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:22:36,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:36,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:22:36,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:36,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491575956] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:22:36,692 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:22:36,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 34 [2022-01-18 12:22:36,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28132445] [2022-01-18 12:22:36,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:22:36,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 12:22:36,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:22:36,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 12:22:36,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=942, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 12:22:36,693 INFO L87 Difference]: Start difference. First operand 1900 states and 5338 transitions. Second operand has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:37,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:22:37,736 INFO L93 Difference]: Finished difference Result 2698 states and 7382 transitions. [2022-01-18 12:22:37,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 12:22:37,737 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:22:37,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:22:37,741 INFO L225 Difference]: With dead ends: 2698 [2022-01-18 12:22:37,741 INFO L226 Difference]: Without dead ends: 2617 [2022-01-18 12:22:37,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 879 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=660, Invalid=2762, Unknown=0, NotChecked=0, Total=3422 [2022-01-18 12:22:37,741 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 417 mSDsluCounter, 2221 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 2272 SdHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:22:37,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [417 Valid, 2272 Invalid, 1081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1039 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:22:37,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2617 states. [2022-01-18 12:22:37,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2617 to 1924. [2022-01-18 12:22:37,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1924 states, 1923 states have (on average 2.8081123244929795) internal successors, (5400), 1923 states have internal predecessors, (5400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:37,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 5400 transitions. [2022-01-18 12:22:37,773 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 5400 transitions. Word has length 72 [2022-01-18 12:22:37,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:22:37,774 INFO L470 AbstractCegarLoop]: Abstraction has 1924 states and 5400 transitions. [2022-01-18 12:22:37,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:37,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 5400 transitions. [2022-01-18 12:22:37,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:22:37,776 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:22:37,776 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:22:37,792 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Ended with exit code 0 [2022-01-18 12:22:37,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,148 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:22:37,976 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:22:37,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:22:37,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1721412685, now seen corresponding path program 97 times [2022-01-18 12:22:37,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:22:37,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770378837] [2022-01-18 12:22:37,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:22:37,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:22:37,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:22:38,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:38,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:22:38,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770378837] [2022-01-18 12:22:38,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770378837] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:22:38,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903996140] [2022-01-18 12:22:38,194 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:22:38,194 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:22:38,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:22:38,195 INFO L229 MonitoredProcess]: Starting monitored process 149 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:22:38,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Waiting until timeout for monitored process [2022-01-18 12:22:38,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:22:38,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:22:38,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:22:38,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:38,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:22:39,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:39,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903996140] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:22:39,013 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:22:39,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 34 [2022-01-18 12:22:39,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201876179] [2022-01-18 12:22:39,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:22:39,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 12:22:39,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:22:39,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 12:22:39,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=965, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 12:22:39,014 INFO L87 Difference]: Start difference. First operand 1924 states and 5400 transitions. Second operand has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:40,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:22:40,015 INFO L93 Difference]: Finished difference Result 2846 states and 7732 transitions. [2022-01-18 12:22:40,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 12:22:40,015 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:22:40,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:22:40,020 INFO L225 Difference]: With dead ends: 2846 [2022-01-18 12:22:40,020 INFO L226 Difference]: Without dead ends: 2795 [2022-01-18 12:22:40,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=583, Invalid=2609, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 12:22:40,020 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 524 mSDsluCounter, 2308 mSDsCounter, 0 mSdLazyCounter, 1079 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 2337 SdHoareTripleChecker+Invalid, 1143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:22:40,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [524 Valid, 2337 Invalid, 1143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1079 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:22:40,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2795 states. [2022-01-18 12:22:40,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2795 to 1940. [2022-01-18 12:22:40,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1940 states, 1939 states have (on average 2.809695719443012) internal successors, (5448), 1939 states have internal predecessors, (5448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:40,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1940 states to 1940 states and 5448 transitions. [2022-01-18 12:22:40,044 INFO L78 Accepts]: Start accepts. Automaton has 1940 states and 5448 transitions. Word has length 72 [2022-01-18 12:22:40,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:22:40,044 INFO L470 AbstractCegarLoop]: Abstraction has 1940 states and 5448 transitions. [2022-01-18 12:22:40,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:40,044 INFO L276 IsEmpty]: Start isEmpty. Operand 1940 states and 5448 transitions. [2022-01-18 12:22:40,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:22:40,055 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:22:40,055 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:22:40,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Forceful destruction successful, exit code 0 [2022-01-18 12:22:40,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,149 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:22:40,255 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:22:40,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:22:40,256 INFO L85 PathProgramCache]: Analyzing trace with hash -287964377, now seen corresponding path program 98 times [2022-01-18 12:22:40,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:22:40,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8141489] [2022-01-18 12:22:40,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:22:40,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:22:40,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:22:40,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:40,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:22:40,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8141489] [2022-01-18 12:22:40,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8141489] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:22:40,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130478881] [2022-01-18 12:22:40,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:22:40,447 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:22:40,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:22:40,448 INFO L229 MonitoredProcess]: Starting monitored process 150 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:22:40,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Waiting until timeout for monitored process [2022-01-18 12:22:40,558 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:22:40,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:22:40,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:22:40,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:22:40,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:40,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:22:41,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:41,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130478881] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:22:41,270 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:22:41,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 34 [2022-01-18 12:22:41,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201702842] [2022-01-18 12:22:41,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:22:41,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 12:22:41,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:22:41,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 12:22:41,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=968, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 12:22:41,271 INFO L87 Difference]: Start difference. First operand 1940 states and 5448 transitions. Second operand has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:42,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:22:42,530 INFO L93 Difference]: Finished difference Result 2892 states and 7924 transitions. [2022-01-18 12:22:42,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 12:22:42,530 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:22:42,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:22:42,534 INFO L225 Difference]: With dead ends: 2892 [2022-01-18 12:22:42,534 INFO L226 Difference]: Without dead ends: 2796 [2022-01-18 12:22:42,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 123 SyntacticMatches, 4 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1180 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=804, Invalid=3752, Unknown=0, NotChecked=0, Total=4556 [2022-01-18 12:22:42,535 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 495 mSDsluCounter, 2400 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 2427 SdHoareTripleChecker+Invalid, 1175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:22:42,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [495 Valid, 2427 Invalid, 1175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:22:42,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2796 states. [2022-01-18 12:22:42,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2796 to 1932. [2022-01-18 12:22:42,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1932 states, 1931 states have (on average 2.809943034697048) internal successors, (5426), 1931 states have internal predecessors, (5426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:42,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1932 states to 1932 states and 5426 transitions. [2022-01-18 12:22:42,559 INFO L78 Accepts]: Start accepts. Automaton has 1932 states and 5426 transitions. Word has length 72 [2022-01-18 12:22:42,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:22:42,570 INFO L470 AbstractCegarLoop]: Abstraction has 1932 states and 5426 transitions. [2022-01-18 12:22:42,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:42,570 INFO L276 IsEmpty]: Start isEmpty. Operand 1932 states and 5426 transitions. [2022-01-18 12:22:42,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:22:42,573 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:22:42,573 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:22:42,590 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Ended with exit code 0 [2022-01-18 12:22:42,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable155 [2022-01-18 12:22:42,773 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:22:42,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:22:42,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1857547103, now seen corresponding path program 99 times [2022-01-18 12:22:42,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:22:42,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945368805] [2022-01-18 12:22:42,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:22:42,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:22:42,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:22:42,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:42,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:22:42,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945368805] [2022-01-18 12:22:42,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945368805] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:22:42,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787502841] [2022-01-18 12:22:42,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:22:42,959 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:22:42,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:22:42,959 INFO L229 MonitoredProcess]: Starting monitored process 151 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:22:42,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Waiting until timeout for monitored process [2022-01-18 12:22:43,072 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 12:22:43,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:22:43,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:22:43,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:22:43,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:43,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:22:43,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:43,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787502841] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:22:43,803 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:22:43,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 34 [2022-01-18 12:22:43,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775088307] [2022-01-18 12:22:43,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:22:43,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 12:22:43,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:22:43,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 12:22:43,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=973, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 12:22:43,804 INFO L87 Difference]: Start difference. First operand 1932 states and 5426 transitions. Second operand has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:44,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:22:44,861 INFO L93 Difference]: Finished difference Result 2900 states and 7876 transitions. [2022-01-18 12:22:44,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 12:22:44,862 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:22:44,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:22:44,866 INFO L225 Difference]: With dead ends: 2900 [2022-01-18 12:22:44,866 INFO L226 Difference]: Without dead ends: 2849 [2022-01-18 12:22:44,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=626, Invalid=2914, Unknown=0, NotChecked=0, Total=3540 [2022-01-18 12:22:44,867 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 623 mSDsluCounter, 2266 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 2301 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:22:44,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [623 Valid, 2301 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:22:44,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2849 states. [2022-01-18 12:22:44,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2849 to 1932. [2022-01-18 12:22:44,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1932 states, 1931 states have (on average 2.809943034697048) internal successors, (5426), 1931 states have internal predecessors, (5426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:44,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1932 states to 1932 states and 5426 transitions. [2022-01-18 12:22:44,892 INFO L78 Accepts]: Start accepts. Automaton has 1932 states and 5426 transitions. Word has length 72 [2022-01-18 12:22:44,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:22:44,892 INFO L470 AbstractCegarLoop]: Abstraction has 1932 states and 5426 transitions. [2022-01-18 12:22:44,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:44,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1932 states and 5426 transitions. [2022-01-18 12:22:44,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:22:44,894 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:22:44,894 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:22:44,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Ended with exit code 0 [2022-01-18 12:22:45,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 151 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2022-01-18 12:22:45,095 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:22:45,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:22:45,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1003971885, now seen corresponding path program 100 times [2022-01-18 12:22:45,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:22:45,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755338334] [2022-01-18 12:22:45,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:22:45,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:22:45,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:22:45,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:45,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:22:45,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755338334] [2022-01-18 12:22:45,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755338334] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:22:45,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746617552] [2022-01-18 12:22:45,294 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:22:45,294 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:22:45,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:22:45,295 INFO L229 MonitoredProcess]: Starting monitored process 152 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:22:45,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Waiting until timeout for monitored process [2022-01-18 12:22:45,403 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:22:45,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:22:45,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:22:45,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:22:45,758 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:45,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:22:46,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:46,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746617552] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:22:46,126 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:22:46,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 34 [2022-01-18 12:22:46,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723467049] [2022-01-18 12:22:46,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:22:46,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 12:22:46,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:22:46,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 12:22:46,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=974, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 12:22:46,127 INFO L87 Difference]: Start difference. First operand 1932 states and 5426 transitions. Second operand has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:47,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:22:47,466 INFO L93 Difference]: Finished difference Result 2942 states and 8057 transitions. [2022-01-18 12:22:47,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 12:22:47,466 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:22:47,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:22:47,471 INFO L225 Difference]: With dead ends: 2942 [2022-01-18 12:22:47,471 INFO L226 Difference]: Without dead ends: 2846 [2022-01-18 12:22:47,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1149 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=811, Invalid=3881, Unknown=0, NotChecked=0, Total=4692 [2022-01-18 12:22:47,471 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 502 mSDsluCounter, 2684 mSDsCounter, 0 mSdLazyCounter, 1287 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 2707 SdHoareTripleChecker+Invalid, 1360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:22:47,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [502 Valid, 2707 Invalid, 1360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1287 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:22:47,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2846 states. [2022-01-18 12:22:47,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2846 to 1932. [2022-01-18 12:22:47,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1932 states, 1931 states have (on average 2.809943034697048) internal successors, (5426), 1931 states have internal predecessors, (5426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:47,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1932 states to 1932 states and 5426 transitions. [2022-01-18 12:22:47,496 INFO L78 Accepts]: Start accepts. Automaton has 1932 states and 5426 transitions. Word has length 72 [2022-01-18 12:22:47,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:22:47,496 INFO L470 AbstractCegarLoop]: Abstraction has 1932 states and 5426 transitions. [2022-01-18 12:22:47,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:47,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1932 states and 5426 transitions. [2022-01-18 12:22:47,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:22:47,505 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:22:47,506 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:22:47,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Forceful destruction successful, exit code 0 [2022-01-18 12:22:47,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 152 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2022-01-18 12:22:47,706 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:22:47,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:22:47,706 INFO L85 PathProgramCache]: Analyzing trace with hash -285231161, now seen corresponding path program 101 times [2022-01-18 12:22:47,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:22:47,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940715422] [2022-01-18 12:22:47,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:22:47,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:22:47,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:22:47,909 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:47,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:22:47,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940715422] [2022-01-18 12:22:47,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940715422] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:22:47,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308354587] [2022-01-18 12:22:47,910 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:22:47,910 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:22:47,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:22:47,911 INFO L229 MonitoredProcess]: Starting monitored process 153 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:22:47,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Waiting until timeout for monitored process [2022-01-18 12:22:48,023 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 12:22:48,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:22:48,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 12:22:48,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:22:48,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:48,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:22:48,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:48,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308354587] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:22:48,889 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:22:48,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 40 [2022-01-18 12:22:48,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230319445] [2022-01-18 12:22:48,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:22:48,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-18 12:22:48,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:22:48,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-18 12:22:48,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1336, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 12:22:48,890 INFO L87 Difference]: Start difference. First operand 1932 states and 5426 transitions. Second operand has 40 states, 40 states have (on average 3.775) internal successors, (151), 40 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:50,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:22:50,596 INFO L93 Difference]: Finished difference Result 3115 states and 8450 transitions. [2022-01-18 12:22:50,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-18 12:22:50,596 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.775) internal successors, (151), 40 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:22:50,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:22:50,600 INFO L225 Difference]: With dead ends: 3115 [2022-01-18 12:22:50,600 INFO L226 Difference]: Without dead ends: 2908 [2022-01-18 12:22:50,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2162 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1199, Invalid=6283, Unknown=0, NotChecked=0, Total=7482 [2022-01-18 12:22:50,601 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 760 mSDsluCounter, 2848 mSDsCounter, 0 mSdLazyCounter, 1336 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 2846 SdHoareTripleChecker+Invalid, 1413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:22:50,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [760 Valid, 2846 Invalid, 1413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1336 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:22:50,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2022-01-18 12:22:50,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 1952. [2022-01-18 12:22:50,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1952 states, 1951 states have (on average 2.8113787801127628) internal successors, (5485), 1951 states have internal predecessors, (5485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:50,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 5485 transitions. [2022-01-18 12:22:50,624 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 5485 transitions. Word has length 72 [2022-01-18 12:22:50,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:22:50,624 INFO L470 AbstractCegarLoop]: Abstraction has 1952 states and 5485 transitions. [2022-01-18 12:22:50,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.775) internal successors, (151), 40 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:50,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 5485 transitions. [2022-01-18 12:22:50,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:22:50,627 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:22:50,627 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:22:50,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Forceful destruction successful, exit code 0 [2022-01-18 12:22:50,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 153 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2022-01-18 12:22:50,827 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:22:50,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:22:50,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1904803417, now seen corresponding path program 102 times [2022-01-18 12:22:50,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:22:50,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530927796] [2022-01-18 12:22:50,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:22:50,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:22:50,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:22:51,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:51,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:22:51,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530927796] [2022-01-18 12:22:51,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530927796] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:22:51,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673081032] [2022-01-18 12:22:51,038 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:22:51,038 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:22:51,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:22:51,039 INFO L229 MonitoredProcess]: Starting monitored process 154 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:22:51,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Waiting until timeout for monitored process [2022-01-18 12:22:51,152 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 12:22:51,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:22:51,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:22:51,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:22:51,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:51,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:22:51,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:51,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673081032] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:22:51,866 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:22:51,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 34 [2022-01-18 12:22:51,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120103702] [2022-01-18 12:22:51,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:22:51,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 12:22:51,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:22:51,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 12:22:51,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=958, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 12:22:51,867 INFO L87 Difference]: Start difference. First operand 1952 states and 5485 transitions. Second operand has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:53,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:22:53,833 INFO L93 Difference]: Finished difference Result 3429 states and 9190 transitions. [2022-01-18 12:22:53,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-18 12:22:53,834 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:22:53,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:22:53,838 INFO L225 Difference]: With dead ends: 3429 [2022-01-18 12:22:53,838 INFO L226 Difference]: Without dead ends: 3267 [2022-01-18 12:22:53,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2375 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1386, Invalid=6624, Unknown=0, NotChecked=0, Total=8010 [2022-01-18 12:22:53,839 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 803 mSDsluCounter, 2647 mSDsCounter, 0 mSdLazyCounter, 1291 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 2651 SdHoareTripleChecker+Invalid, 1355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:22:53,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [803 Valid, 2651 Invalid, 1355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1291 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:22:53,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3267 states. [2022-01-18 12:22:53,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3267 to 1952. [2022-01-18 12:22:53,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1952 states, 1951 states have (on average 2.813429010763711) internal successors, (5489), 1951 states have internal predecessors, (5489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:53,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 5489 transitions. [2022-01-18 12:22:53,864 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 5489 transitions. Word has length 72 [2022-01-18 12:22:53,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:22:53,865 INFO L470 AbstractCegarLoop]: Abstraction has 1952 states and 5489 transitions. [2022-01-18 12:22:53,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:53,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 5489 transitions. [2022-01-18 12:22:53,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:22:53,867 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:22:53,867 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:22:53,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Forceful destruction successful, exit code 0 [2022-01-18 12:22:54,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159,154 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:22:54,067 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:22:54,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:22:54,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1363278033, now seen corresponding path program 103 times [2022-01-18 12:22:54,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:22:54,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050967159] [2022-01-18 12:22:54,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:22:54,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:22:54,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:22:54,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:54,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:22:54,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050967159] [2022-01-18 12:22:54,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050967159] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:22:54,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488780635] [2022-01-18 12:22:54,301 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:22:54,301 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:22:54,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:22:54,302 INFO L229 MonitoredProcess]: Starting monitored process 155 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:22:54,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Waiting until timeout for monitored process [2022-01-18 12:22:54,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:22:54,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:22:54,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:22:54,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:54,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:22:55,151 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:55,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488780635] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:22:55,151 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:22:55,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 34 [2022-01-18 12:22:55,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606111703] [2022-01-18 12:22:55,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:22:55,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 12:22:55,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:22:55,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 12:22:55,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=955, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 12:22:55,152 INFO L87 Difference]: Start difference. First operand 1952 states and 5489 transitions. Second operand has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:56,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:22:56,320 INFO L93 Difference]: Finished difference Result 2869 states and 7785 transitions. [2022-01-18 12:22:56,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 12:22:56,320 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:22:56,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:22:56,324 INFO L225 Difference]: With dead ends: 2869 [2022-01-18 12:22:56,324 INFO L226 Difference]: Without dead ends: 2818 [2022-01-18 12:22:56,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 123 SyntacticMatches, 4 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 942 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=702, Invalid=3080, Unknown=0, NotChecked=0, Total=3782 [2022-01-18 12:22:56,325 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 539 mSDsluCounter, 2350 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 2376 SdHoareTripleChecker+Invalid, 1174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:22:56,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [539 Valid, 2376 Invalid, 1174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1124 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:22:56,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2818 states. [2022-01-18 12:22:56,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2818 to 1924. [2022-01-18 12:22:56,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1924 states, 1923 states have (on average 2.812272490899636) internal successors, (5408), 1923 states have internal predecessors, (5408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:56,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 5408 transitions. [2022-01-18 12:22:56,348 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 5408 transitions. Word has length 72 [2022-01-18 12:22:56,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:22:56,348 INFO L470 AbstractCegarLoop]: Abstraction has 1924 states and 5408 transitions. [2022-01-18 12:22:56,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:56,348 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 5408 transitions. [2022-01-18 12:22:56,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:22:56,350 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:22:56,350 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:22:56,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Forceful destruction successful, exit code 0 [2022-01-18 12:22:56,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160,155 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:22:56,550 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:22:56,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:22:56,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1167047719, now seen corresponding path program 104 times [2022-01-18 12:22:56,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:22:56,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363682865] [2022-01-18 12:22:56,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:22:56,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:22:56,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:22:56,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:56,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:22:56,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363682865] [2022-01-18 12:22:56,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363682865] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:22:56,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42935782] [2022-01-18 12:22:56,733 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:22:56,733 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:22:56,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:22:56,734 INFO L229 MonitoredProcess]: Starting monitored process 156 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:22:56,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Waiting until timeout for monitored process [2022-01-18 12:22:56,848 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:22:56,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:22:56,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:22:56,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:22:57,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:57,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:22:57,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:57,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42935782] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:22:57,621 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:22:57,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2022-01-18 12:22:57,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145256989] [2022-01-18 12:22:57,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:22:57,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 12:22:57,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:22:57,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 12:22:57,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1107, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 12:22:57,622 INFO L87 Difference]: Start difference. First operand 1924 states and 5408 transitions. Second operand has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:58,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:22:58,965 INFO L93 Difference]: Finished difference Result 2978 states and 8078 transitions. [2022-01-18 12:22:58,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-18 12:22:58,965 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:22:58,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:22:58,969 INFO L225 Difference]: With dead ends: 2978 [2022-01-18 12:22:58,969 INFO L226 Difference]: Without dead ends: 2876 [2022-01-18 12:22:58,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1222 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=691, Invalid=4279, Unknown=0, NotChecked=0, Total=4970 [2022-01-18 12:22:58,970 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 556 mSDsluCounter, 3075 mSDsCounter, 0 mSdLazyCounter, 1463 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 3085 SdHoareTripleChecker+Invalid, 1544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:22:58,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [556 Valid, 3085 Invalid, 1544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1463 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:22:58,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2876 states. [2022-01-18 12:22:58,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2876 to 2000. [2022-01-18 12:22:58,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2000 states, 1999 states have (on average 2.8159079539769887) internal successors, (5629), 1999 states have internal predecessors, (5629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:58,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2000 states to 2000 states and 5629 transitions. [2022-01-18 12:22:58,993 INFO L78 Accepts]: Start accepts. Automaton has 2000 states and 5629 transitions. Word has length 72 [2022-01-18 12:22:58,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:22:58,993 INFO L470 AbstractCegarLoop]: Abstraction has 2000 states and 5629 transitions. [2022-01-18 12:22:58,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:58,993 INFO L276 IsEmpty]: Start isEmpty. Operand 2000 states and 5629 transitions. [2022-01-18 12:22:58,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:22:58,995 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:22:58,995 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:22:59,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Forceful destruction successful, exit code 0 [2022-01-18 12:22:59,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161,156 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:22:59,195 INFO L402 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:22:59,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:22:59,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1468321395, now seen corresponding path program 105 times [2022-01-18 12:22:59,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:22:59,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454603917] [2022-01-18 12:22:59,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:22:59,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:22:59,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:22:59,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:59,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:22:59,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454603917] [2022-01-18 12:22:59,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454603917] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:22:59,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328253600] [2022-01-18 12:22:59,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:22:59,390 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:22:59,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:22:59,391 INFO L229 MonitoredProcess]: Starting monitored process 157 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:22:59,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Waiting until timeout for monitored process [2022-01-18 12:22:59,505 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 12:22:59,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:22:59,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:22:59,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:22:59,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:59,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:23:00,272 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:00,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328253600] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:23:00,273 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:23:00,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2022-01-18 12:23:00,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345306210] [2022-01-18 12:23:00,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:23:00,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 12:23:00,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:23:00,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 12:23:00,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1100, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 12:23:00,273 INFO L87 Difference]: Start difference. First operand 2000 states and 5629 transitions. Second operand has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:02,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:23:02,369 INFO L93 Difference]: Finished difference Result 3391 states and 9064 transitions. [2022-01-18 12:23:02,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-01-18 12:23:02,370 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:23:02,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:23:02,374 INFO L225 Difference]: With dead ends: 3391 [2022-01-18 12:23:02,374 INFO L226 Difference]: Without dead ends: 3289 [2022-01-18 12:23:02,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2155 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1193, Invalid=6639, Unknown=0, NotChecked=0, Total=7832 [2022-01-18 12:23:02,375 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 863 mSDsluCounter, 2881 mSDsCounter, 0 mSdLazyCounter, 1404 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 2881 SdHoareTripleChecker+Invalid, 1518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:23:02,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [863 Valid, 2881 Invalid, 1518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1404 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:23:02,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3289 states. [2022-01-18 12:23:02,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3289 to 2000. [2022-01-18 12:23:02,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2000 states, 1999 states have (on average 2.8139069534767382) internal successors, (5625), 1999 states have internal predecessors, (5625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:02,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2000 states to 2000 states and 5625 transitions. [2022-01-18 12:23:02,401 INFO L78 Accepts]: Start accepts. Automaton has 2000 states and 5625 transitions. Word has length 72 [2022-01-18 12:23:02,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:23:02,402 INFO L470 AbstractCegarLoop]: Abstraction has 2000 states and 5625 transitions. [2022-01-18 12:23:02,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:02,402 INFO L276 IsEmpty]: Start isEmpty. Operand 2000 states and 5625 transitions. [2022-01-18 12:23:02,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:23:02,404 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:23:02,404 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:23:02,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Forceful destruction successful, exit code 0 [2022-01-18 12:23:02,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,157 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:23:02,604 INFO L402 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:23:02,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:23:02,604 INFO L85 PathProgramCache]: Analyzing trace with hash -34873087, now seen corresponding path program 106 times [2022-01-18 12:23:02,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:23:02,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226974438] [2022-01-18 12:23:02,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:23:02,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:23:02,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:23:02,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:02,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:23:02,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226974438] [2022-01-18 12:23:02,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226974438] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:23:02,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404597606] [2022-01-18 12:23:02,813 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:23:02,813 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:23:02,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:23:02,814 INFO L229 MonitoredProcess]: Starting monitored process 158 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:23:02,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Waiting until timeout for monitored process [2022-01-18 12:23:02,927 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:23:02,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:23:02,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:23:02,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:23:03,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:03,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:23:03,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:03,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404597606] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:23:03,684 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:23:03,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2022-01-18 12:23:03,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837388209] [2022-01-18 12:23:03,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:23:03,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 12:23:03,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:23:03,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 12:23:03,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1092, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 12:23:03,685 INFO L87 Difference]: Start difference. First operand 2000 states and 5625 transitions. Second operand has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:05,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:23:05,426 INFO L93 Difference]: Finished difference Result 3215 states and 8719 transitions. [2022-01-18 12:23:05,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-18 12:23:05,426 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:23:05,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:23:05,430 INFO L225 Difference]: With dead ends: 3215 [2022-01-18 12:23:05,430 INFO L226 Difference]: Without dead ends: 3083 [2022-01-18 12:23:05,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1700 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=941, Invalid=5221, Unknown=0, NotChecked=0, Total=6162 [2022-01-18 12:23:05,431 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 646 mSDsluCounter, 2821 mSDsCounter, 0 mSdLazyCounter, 1338 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 2826 SdHoareTripleChecker+Invalid, 1429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:23:05,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [646 Valid, 2826 Invalid, 1429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1338 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:23:05,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3083 states. [2022-01-18 12:23:05,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3083 to 2052. [2022-01-18 12:23:05,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2052 states, 2051 states have (on average 2.8142369575816675) internal successors, (5772), 2051 states have internal predecessors, (5772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:05,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2052 states to 2052 states and 5772 transitions. [2022-01-18 12:23:05,454 INFO L78 Accepts]: Start accepts. Automaton has 2052 states and 5772 transitions. Word has length 72 [2022-01-18 12:23:05,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:23:05,455 INFO L470 AbstractCegarLoop]: Abstraction has 2052 states and 5772 transitions. [2022-01-18 12:23:05,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:05,455 INFO L276 IsEmpty]: Start isEmpty. Operand 2052 states and 5772 transitions. [2022-01-18 12:23:05,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:23:05,457 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:23:05,457 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:23:05,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Forceful destruction successful, exit code 0 [2022-01-18 12:23:05,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 158 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable163 [2022-01-18 12:23:05,657 INFO L402 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:23:05,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:23:05,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1764192065, now seen corresponding path program 107 times [2022-01-18 12:23:05,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:23:05,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963448273] [2022-01-18 12:23:05,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:23:05,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:23:05,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:23:05,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:05,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:23:05,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963448273] [2022-01-18 12:23:05,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963448273] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:23:05,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057950498] [2022-01-18 12:23:05,849 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:23:05,849 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:23:05,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:23:05,850 INFO L229 MonitoredProcess]: Starting monitored process 159 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:23:05,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Waiting until timeout for monitored process [2022-01-18 12:23:05,963 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 12:23:05,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:23:05,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 12:23:05,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:23:06,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:06,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:23:06,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:06,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057950498] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:23:06,891 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:23:06,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 41 [2022-01-18 12:23:06,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023779337] [2022-01-18 12:23:06,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:23:06,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 12:23:06,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:23:06,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 12:23:06,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=1403, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 12:23:06,892 INFO L87 Difference]: Start difference. First operand 2052 states and 5772 transitions. Second operand has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:08,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:23:08,163 INFO L93 Difference]: Finished difference Result 2795 states and 7671 transitions. [2022-01-18 12:23:08,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 12:23:08,163 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:23:08,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:23:08,167 INFO L225 Difference]: With dead ends: 2795 [2022-01-18 12:23:08,167 INFO L226 Difference]: Without dead ends: 2699 [2022-01-18 12:23:08,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1243 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=784, Invalid=4186, Unknown=0, NotChecked=0, Total=4970 [2022-01-18 12:23:08,167 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 501 mSDsluCounter, 2871 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 2873 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:23:08,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [501 Valid, 2873 Invalid, 1310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1239 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:23:08,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2699 states. [2022-01-18 12:23:08,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2699 to 2060. [2022-01-18 12:23:08,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2060 states, 2059 states have (on average 2.8139873725109275) internal successors, (5794), 2059 states have internal predecessors, (5794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:08,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2060 states to 2060 states and 5794 transitions. [2022-01-18 12:23:08,191 INFO L78 Accepts]: Start accepts. Automaton has 2060 states and 5794 transitions. Word has length 72 [2022-01-18 12:23:08,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:23:08,191 INFO L470 AbstractCegarLoop]: Abstraction has 2060 states and 5794 transitions. [2022-01-18 12:23:08,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:08,191 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states and 5794 transitions. [2022-01-18 12:23:08,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:23:08,193 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:23:08,193 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:23:08,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Forceful destruction successful, exit code 0 [2022-01-18 12:23:08,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,159 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:23:08,394 INFO L402 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:23:08,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:23:08,394 INFO L85 PathProgramCache]: Analyzing trace with hash 144619809, now seen corresponding path program 108 times [2022-01-18 12:23:08,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:23:08,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143660775] [2022-01-18 12:23:08,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:23:08,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:23:08,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:23:08,603 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:08,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:23:08,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143660775] [2022-01-18 12:23:08,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143660775] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:23:08,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559633671] [2022-01-18 12:23:08,603 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:23:08,603 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:23:08,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:23:08,604 INFO L229 MonitoredProcess]: Starting monitored process 160 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:23:08,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Waiting until timeout for monitored process [2022-01-18 12:23:08,719 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 12:23:08,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:23:08,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:23:08,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:23:09,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:09,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:23:09,487 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:09,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559633671] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:23:09,487 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:23:09,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2022-01-18 12:23:09,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225463177] [2022-01-18 12:23:09,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:23:09,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 12:23:09,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:23:09,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 12:23:09,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1102, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 12:23:09,488 INFO L87 Difference]: Start difference. First operand 2060 states and 5794 transitions. Second operand has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:11,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:23:11,947 INFO L93 Difference]: Finished difference Result 3606 states and 9691 transitions. [2022-01-18 12:23:11,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-18 12:23:11,947 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:23:11,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:23:11,953 INFO L225 Difference]: With dead ends: 3606 [2022-01-18 12:23:11,953 INFO L226 Difference]: Without dead ends: 3459 [2022-01-18 12:23:11,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2781 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1383, Invalid=8319, Unknown=0, NotChecked=0, Total=9702 [2022-01-18 12:23:11,954 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 1085 mSDsluCounter, 2795 mSDsCounter, 0 mSdLazyCounter, 1357 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 2806 SdHoareTripleChecker+Invalid, 1500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:23:11,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1085 Valid, 2806 Invalid, 1500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1357 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:23:11,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3459 states. [2022-01-18 12:23:11,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3459 to 2080. [2022-01-18 12:23:11,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2080 states, 2079 states have (on average 2.819143819143819) internal successors, (5861), 2079 states have internal predecessors, (5861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:11,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2080 states to 2080 states and 5861 transitions. [2022-01-18 12:23:11,982 INFO L78 Accepts]: Start accepts. Automaton has 2080 states and 5861 transitions. Word has length 72 [2022-01-18 12:23:11,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:23:11,982 INFO L470 AbstractCegarLoop]: Abstraction has 2080 states and 5861 transitions. [2022-01-18 12:23:11,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:11,982 INFO L276 IsEmpty]: Start isEmpty. Operand 2080 states and 5861 transitions. [2022-01-18 12:23:11,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:23:11,985 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:23:11,985 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:23:12,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Forceful destruction successful, exit code 0 [2022-01-18 12:23:12,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165,160 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:23:12,185 INFO L402 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:23:12,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:23:12,185 INFO L85 PathProgramCache]: Analyzing trace with hash -882266037, now seen corresponding path program 109 times [2022-01-18 12:23:12,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:23:12,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598947510] [2022-01-18 12:23:12,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:23:12,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:23:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:23:12,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:12,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:23:12,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598947510] [2022-01-18 12:23:12,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598947510] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:23:12,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340264879] [2022-01-18 12:23:12,394 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:23:12,394 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:23:12,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:23:12,395 INFO L229 MonitoredProcess]: Starting monitored process 161 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:23:12,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Waiting until timeout for monitored process [2022-01-18 12:23:12,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:23:12,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:23:12,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:23:12,898 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:12,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:23:13,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:13,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340264879] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:23:13,294 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:23:13,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2022-01-18 12:23:13,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215023333] [2022-01-18 12:23:13,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:23:13,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 12:23:13,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:23:13,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 12:23:13,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1100, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 12:23:13,295 INFO L87 Difference]: Start difference. First operand 2080 states and 5861 transitions. Second operand has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:15,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:23:15,337 INFO L93 Difference]: Finished difference Result 3431 states and 9246 transitions. [2022-01-18 12:23:15,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-01-18 12:23:15,338 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:23:15,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:23:15,352 INFO L225 Difference]: With dead ends: 3431 [2022-01-18 12:23:15,352 INFO L226 Difference]: Without dead ends: 3329 [2022-01-18 12:23:15,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2014 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1079, Invalid=6231, Unknown=0, NotChecked=0, Total=7310 [2022-01-18 12:23:15,353 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 811 mSDsluCounter, 3184 mSDsCounter, 0 mSdLazyCounter, 1525 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 3163 SdHoareTripleChecker+Invalid, 1654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:23:15,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [811 Valid, 3163 Invalid, 1654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1525 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:23:15,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3329 states. [2022-01-18 12:23:15,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3329 to 2052. [2022-01-18 12:23:15,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2052 states, 2051 states have (on average 2.818137493905412) internal successors, (5780), 2051 states have internal predecessors, (5780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:15,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2052 states to 2052 states and 5780 transitions. [2022-01-18 12:23:15,377 INFO L78 Accepts]: Start accepts. Automaton has 2052 states and 5780 transitions. Word has length 72 [2022-01-18 12:23:15,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:23:15,377 INFO L470 AbstractCegarLoop]: Abstraction has 2052 states and 5780 transitions. [2022-01-18 12:23:15,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:15,377 INFO L276 IsEmpty]: Start isEmpty. Operand 2052 states and 5780 transitions. [2022-01-18 12:23:15,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:23:15,379 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:23:15,379 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:23:15,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Forceful destruction successful, exit code 0 [2022-01-18 12:23:15,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 161 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166 [2022-01-18 12:23:15,579 INFO L402 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:23:15,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:23:15,580 INFO L85 PathProgramCache]: Analyzing trace with hash 855638743, now seen corresponding path program 110 times [2022-01-18 12:23:15,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:23:15,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931490410] [2022-01-18 12:23:15,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:23:15,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:23:15,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:23:15,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:15,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:23:15,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931490410] [2022-01-18 12:23:15,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931490410] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:23:15,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371507184] [2022-01-18 12:23:15,768 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:23:15,768 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:23:15,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:23:15,769 INFO L229 MonitoredProcess]: Starting monitored process 162 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:23:15,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Waiting until timeout for monitored process [2022-01-18 12:23:15,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:23:15,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:23:15,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:23:15,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:23:16,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:16,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:23:16,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:16,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371507184] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:23:16,662 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:23:16,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2022-01-18 12:23:16,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372992882] [2022-01-18 12:23:16,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:23:16,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 12:23:16,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:23:16,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 12:23:16,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1115, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 12:23:16,664 INFO L87 Difference]: Start difference. First operand 2052 states and 5780 transitions. Second operand has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:18,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:23:18,668 INFO L93 Difference]: Finished difference Result 3391 states and 9214 transitions. [2022-01-18 12:23:18,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-01-18 12:23:18,668 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:23:18,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:23:18,673 INFO L225 Difference]: With dead ends: 3391 [2022-01-18 12:23:18,673 INFO L226 Difference]: Without dead ends: 3184 [2022-01-18 12:23:18,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2154 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1071, Invalid=6761, Unknown=0, NotChecked=0, Total=7832 [2022-01-18 12:23:18,674 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 633 mSDsluCounter, 3307 mSDsCounter, 0 mSdLazyCounter, 1576 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 3288 SdHoareTripleChecker+Invalid, 1660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:23:18,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [633 Valid, 3288 Invalid, 1660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1576 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:23:18,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3184 states. [2022-01-18 12:23:18,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3184 to 2092. [2022-01-18 12:23:18,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2092 states, 2091 states have (on average 2.8225729316116692) internal successors, (5902), 2091 states have internal predecessors, (5902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:18,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2092 states to 2092 states and 5902 transitions. [2022-01-18 12:23:18,700 INFO L78 Accepts]: Start accepts. Automaton has 2092 states and 5902 transitions. Word has length 72 [2022-01-18 12:23:18,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:23:18,700 INFO L470 AbstractCegarLoop]: Abstraction has 2092 states and 5902 transitions. [2022-01-18 12:23:18,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:18,700 INFO L276 IsEmpty]: Start isEmpty. Operand 2092 states and 5902 transitions. [2022-01-18 12:23:18,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:23:18,702 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:23:18,702 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:23:18,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Forceful destruction successful, exit code 0 [2022-01-18 12:23:18,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 162 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167 [2022-01-18 12:23:18,903 INFO L402 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:23:18,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:23:18,903 INFO L85 PathProgramCache]: Analyzing trace with hash -763933513, now seen corresponding path program 111 times [2022-01-18 12:23:18,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:23:18,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687584995] [2022-01-18 12:23:18,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:23:18,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:23:18,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:23:19,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:19,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:23:19,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687584995] [2022-01-18 12:23:19,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687584995] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:23:19,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606627862] [2022-01-18 12:23:19,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:23:19,084 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:23:19,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:23:19,084 INFO L229 MonitoredProcess]: Starting monitored process 163 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:23:19,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Waiting until timeout for monitored process [2022-01-18 12:23:19,203 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 12:23:19,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:23:19,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:23:19,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:23:19,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:19,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:23:19,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:19,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606627862] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:23:19,960 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:23:19,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2022-01-18 12:23:19,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393019922] [2022-01-18 12:23:19,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:23:19,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 12:23:19,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:23:19,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 12:23:19,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1094, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 12:23:19,961 INFO L87 Difference]: Start difference. First operand 2092 states and 5902 transitions. Second operand has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:22,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:23:22,766 INFO L93 Difference]: Finished difference Result 3944 states and 10549 transitions. [2022-01-18 12:23:22,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-01-18 12:23:22,767 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:23:22,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:23:22,772 INFO L225 Difference]: With dead ends: 3944 [2022-01-18 12:23:22,772 INFO L226 Difference]: Without dead ends: 3722 [2022-01-18 12:23:22,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4092 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1864, Invalid=11018, Unknown=0, NotChecked=0, Total=12882 [2022-01-18 12:23:22,773 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 1047 mSDsluCounter, 3076 mSDsCounter, 0 mSdLazyCounter, 1542 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1047 SdHoareTripleChecker+Valid, 3090 SdHoareTripleChecker+Invalid, 1642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:23:22,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1047 Valid, 3090 Invalid, 1642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1542 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 12:23:22,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3722 states. [2022-01-18 12:23:22,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3722 to 2100. [2022-01-18 12:23:22,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2100 states, 2099 states have (on average 2.8261076703191996) internal successors, (5932), 2099 states have internal predecessors, (5932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:22,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2100 states to 2100 states and 5932 transitions. [2022-01-18 12:23:22,817 INFO L78 Accepts]: Start accepts. Automaton has 2100 states and 5932 transitions. Word has length 72 [2022-01-18 12:23:22,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:23:22,817 INFO L470 AbstractCegarLoop]: Abstraction has 2100 states and 5932 transitions. [2022-01-18 12:23:22,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:22,818 INFO L276 IsEmpty]: Start isEmpty. Operand 2100 states and 5932 transitions. [2022-01-18 12:23:22,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:23:22,820 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:23:22,820 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:23:22,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Forceful destruction successful, exit code 0 [2022-01-18 12:23:23,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 163 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable168 [2022-01-18 12:23:23,020 INFO L402 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:23:23,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:23:23,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1790819359, now seen corresponding path program 112 times [2022-01-18 12:23:23,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:23:23,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333655883] [2022-01-18 12:23:23,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:23:23,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:23:23,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:23:23,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:23,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:23:23,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333655883] [2022-01-18 12:23:23,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333655883] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:23:23,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327181596] [2022-01-18 12:23:23,242 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:23:23,242 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:23:23,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:23:23,243 INFO L229 MonitoredProcess]: Starting monitored process 164 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:23:23,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (164)] Waiting until timeout for monitored process [2022-01-18 12:23:23,360 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:23:23,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:23:23,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:23:23,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:23:23,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:23,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:23:24,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:24,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327181596] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:23:24,121 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:23:24,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2022-01-18 12:23:24,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130058930] [2022-01-18 12:23:24,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:23:24,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 12:23:24,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:23:24,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 12:23:24,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1084, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 12:23:24,122 INFO L87 Difference]: Start difference. First operand 2100 states and 5932 transitions. Second operand has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:26,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:23:26,389 INFO L93 Difference]: Finished difference Result 3519 states and 9459 transitions. [2022-01-18 12:23:26,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-01-18 12:23:26,390 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:23:26,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:23:26,395 INFO L225 Difference]: With dead ends: 3519 [2022-01-18 12:23:26,395 INFO L226 Difference]: Without dead ends: 3417 [2022-01-18 12:23:26,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2462 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1306, Invalid=6884, Unknown=0, NotChecked=0, Total=8190 [2022-01-18 12:23:26,396 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 1026 mSDsluCounter, 2619 mSDsCounter, 0 mSdLazyCounter, 1221 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 2634 SdHoareTripleChecker+Invalid, 1336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:23:26,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1026 Valid, 2634 Invalid, 1336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1221 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:23:26,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3417 states. [2022-01-18 12:23:26,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3417 to 2052. [2022-01-18 12:23:26,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2052 states, 2051 states have (on average 2.8220380302291566) internal successors, (5788), 2051 states have internal predecessors, (5788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:26,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2052 states to 2052 states and 5788 transitions. [2022-01-18 12:23:26,422 INFO L78 Accepts]: Start accepts. Automaton has 2052 states and 5788 transitions. Word has length 72 [2022-01-18 12:23:26,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:23:26,422 INFO L470 AbstractCegarLoop]: Abstraction has 2052 states and 5788 transitions. [2022-01-18 12:23:26,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:26,422 INFO L276 IsEmpty]: Start isEmpty. Operand 2052 states and 5788 transitions. [2022-01-18 12:23:26,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:23:26,424 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:23:26,424 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:23:26,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (164)] Forceful destruction successful, exit code 0 [2022-01-18 12:23:26,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 164 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2022-01-18 12:23:26,624 INFO L402 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:23:26,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:23:26,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1370507071, now seen corresponding path program 113 times [2022-01-18 12:23:26,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:23:26,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698391654] [2022-01-18 12:23:26,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:23:26,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:23:26,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:23:26,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:26,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:23:26,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698391654] [2022-01-18 12:23:26,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698391654] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:23:26,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218578771] [2022-01-18 12:23:26,798 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:23:26,798 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:23:26,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:23:26,799 INFO L229 MonitoredProcess]: Starting monitored process 165 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:23:26,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (165)] Waiting until timeout for monitored process [2022-01-18 12:23:26,915 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 12:23:26,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:23:26,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 12:23:26,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:23:27,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:27,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:23:27,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:27,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218578771] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:23:27,824 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:23:27,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 41 [2022-01-18 12:23:27,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962296438] [2022-01-18 12:23:27,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:23:27,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 12:23:27,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:23:27,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 12:23:27,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=1363, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 12:23:27,825 INFO L87 Difference]: Start difference. First operand 2052 states and 5788 transitions. Second operand has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:28,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:23:28,485 INFO L93 Difference]: Finished difference Result 2634 states and 7276 transitions. [2022-01-18 12:23:28,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-18 12:23:28,485 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:23:28,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:23:28,489 INFO L225 Difference]: With dead ends: 2634 [2022-01-18 12:23:28,489 INFO L226 Difference]: Without dead ends: 2508 [2022-01-18 12:23:28,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 901 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=562, Invalid=2744, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 12:23:28,489 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 461 mSDsluCounter, 2127 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 2146 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:23:28,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [461 Valid, 2146 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 918 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 12:23:28,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2508 states. [2022-01-18 12:23:28,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2508 to 2052. [2022-01-18 12:23:28,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2052 states, 2051 states have (on average 2.8200877620672844) internal successors, (5784), 2051 states have internal predecessors, (5784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:28,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2052 states to 2052 states and 5784 transitions. [2022-01-18 12:23:28,511 INFO L78 Accepts]: Start accepts. Automaton has 2052 states and 5784 transitions. Word has length 72 [2022-01-18 12:23:28,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:23:28,512 INFO L470 AbstractCegarLoop]: Abstraction has 2052 states and 5784 transitions. [2022-01-18 12:23:28,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:28,512 INFO L276 IsEmpty]: Start isEmpty. Operand 2052 states and 5784 transitions. [2022-01-18 12:23:28,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:23:28,514 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:23:28,514 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:23:28,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (165)] Forceful destruction successful, exit code 0 [2022-01-18 12:23:28,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 165 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable170 [2022-01-18 12:23:28,714 INFO L402 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:23:28,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:23:28,714 INFO L85 PathProgramCache]: Analyzing trace with hash -491516717, now seen corresponding path program 114 times [2022-01-18 12:23:28,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:23:28,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7634976] [2022-01-18 12:23:28,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:23:28,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:23:28,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:23:28,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:28,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:23:28,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7634976] [2022-01-18 12:23:28,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7634976] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:23:28,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776754529] [2022-01-18 12:23:28,934 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:23:28,934 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:23:28,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:23:28,935 INFO L229 MonitoredProcess]: Starting monitored process 166 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:23:28,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (166)] Waiting until timeout for monitored process [2022-01-18 12:23:29,052 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 12:23:29,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:23:29,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:23:29,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:23:29,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:29,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:23:29,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:29,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776754529] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:23:29,764 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:23:29,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 34 [2022-01-18 12:23:29,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471985962] [2022-01-18 12:23:29,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:23:29,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 12:23:29,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:23:29,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 12:23:29,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=939, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 12:23:29,765 INFO L87 Difference]: Start difference. First operand 2052 states and 5784 transitions. Second operand has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:30,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:23:30,868 INFO L93 Difference]: Finished difference Result 2926 states and 8033 transitions. [2022-01-18 12:23:30,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 12:23:30,868 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:23:30,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:23:30,872 INFO L225 Difference]: With dead ends: 2926 [2022-01-18 12:23:30,872 INFO L226 Difference]: Without dead ends: 2845 [2022-01-18 12:23:30,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 881 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=674, Invalid=2748, Unknown=0, NotChecked=0, Total=3422 [2022-01-18 12:23:30,873 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 389 mSDsluCounter, 2524 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 2568 SdHoareTripleChecker+Invalid, 1266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:23:30,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [389 Valid, 2568 Invalid, 1266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1226 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:23:30,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2845 states. [2022-01-18 12:23:30,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2845 to 2052. [2022-01-18 12:23:30,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2052 states, 2051 states have (on average 2.818137493905412) internal successors, (5780), 2051 states have internal predecessors, (5780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:30,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2052 states to 2052 states and 5780 transitions. [2022-01-18 12:23:30,898 INFO L78 Accepts]: Start accepts. Automaton has 2052 states and 5780 transitions. Word has length 72 [2022-01-18 12:23:30,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:23:30,898 INFO L470 AbstractCegarLoop]: Abstraction has 2052 states and 5780 transitions. [2022-01-18 12:23:30,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:30,898 INFO L276 IsEmpty]: Start isEmpty. Operand 2052 states and 5780 transitions. [2022-01-18 12:23:30,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:23:30,900 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:23:30,900 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:23:30,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (166)] Forceful destruction successful, exit code 0 [2022-01-18 12:23:31,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 166 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable171 [2022-01-18 12:23:31,111 INFO L402 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:23:31,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:23:31,111 INFO L85 PathProgramCache]: Analyzing trace with hash 612164819, now seen corresponding path program 115 times [2022-01-18 12:23:31,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:23:31,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7186832] [2022-01-18 12:23:31,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:23:31,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:23:31,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:23:31,336 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:31,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:23:31,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7186832] [2022-01-18 12:23:31,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7186832] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:23:31,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447713734] [2022-01-18 12:23:31,337 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:23:31,337 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:23:31,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:23:31,338 INFO L229 MonitoredProcess]: Starting monitored process 167 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:23:31,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (167)] Waiting until timeout for monitored process [2022-01-18 12:23:31,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:23:31,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:23:31,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:23:31,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:31,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:23:32,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:32,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447713734] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:23:32,176 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:23:32,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 34 [2022-01-18 12:23:32,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234138894] [2022-01-18 12:23:32,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:23:32,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 12:23:32,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:23:32,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 12:23:32,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=960, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 12:23:32,177 INFO L87 Difference]: Start difference. First operand 2052 states and 5780 transitions. Second operand has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:33,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:23:33,639 INFO L93 Difference]: Finished difference Result 3024 states and 8291 transitions. [2022-01-18 12:23:33,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 12:23:33,640 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:23:33,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:23:33,644 INFO L225 Difference]: With dead ends: 3024 [2022-01-18 12:23:33,644 INFO L226 Difference]: Without dead ends: 2928 [2022-01-18 12:23:33,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1221 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=851, Invalid=3841, Unknown=0, NotChecked=0, Total=4692 [2022-01-18 12:23:33,644 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 549 mSDsluCounter, 2232 mSDsCounter, 0 mSdLazyCounter, 1100 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 2273 SdHoareTripleChecker+Invalid, 1174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:23:33,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [549 Valid, 2273 Invalid, 1174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1100 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:23:33,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2022-01-18 12:23:33,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 2048. [2022-01-18 12:23:33,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2048 states, 2047 states have (on average 2.8182706399609185) internal successors, (5769), 2047 states have internal predecessors, (5769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:33,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2048 states to 2048 states and 5769 transitions. [2022-01-18 12:23:33,670 INFO L78 Accepts]: Start accepts. Automaton has 2048 states and 5769 transitions. Word has length 72 [2022-01-18 12:23:33,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:23:33,670 INFO L470 AbstractCegarLoop]: Abstraction has 2048 states and 5769 transitions. [2022-01-18 12:23:33,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:33,670 INFO L276 IsEmpty]: Start isEmpty. Operand 2048 states and 5769 transitions. [2022-01-18 12:23:33,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:23:33,672 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:23:33,672 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:23:33,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (167)] Forceful destruction successful, exit code 0 [2022-01-18 12:23:33,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 167 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable172 [2022-01-18 12:23:33,873 INFO L402 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:23:33,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:23:33,873 INFO L85 PathProgramCache]: Analyzing trace with hash -103842689, now seen corresponding path program 116 times [2022-01-18 12:23:33,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:23:33,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581994726] [2022-01-18 12:23:33,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:23:33,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:23:33,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:23:34,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:34,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:23:34,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581994726] [2022-01-18 12:23:34,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581994726] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:23:34,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894576483] [2022-01-18 12:23:34,073 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:23:34,073 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:23:34,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:23:34,074 INFO L229 MonitoredProcess]: Starting monitored process 168 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:23:34,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (168)] Waiting until timeout for monitored process [2022-01-18 12:23:34,196 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:23:34,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:23:34,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:23:34,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:23:34,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:34,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:23:34,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:34,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894576483] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:23:34,925 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:23:34,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 34 [2022-01-18 12:23:34,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257095313] [2022-01-18 12:23:34,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:23:34,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 12:23:34,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:23:34,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 12:23:34,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=974, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 12:23:34,925 INFO L87 Difference]: Start difference. First operand 2048 states and 5769 transitions. Second operand has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:36,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:23:36,320 INFO L93 Difference]: Finished difference Result 3070 states and 8413 transitions. [2022-01-18 12:23:36,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 12:23:36,320 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:23:36,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:23:36,324 INFO L225 Difference]: With dead ends: 3070 [2022-01-18 12:23:36,324 INFO L226 Difference]: Without dead ends: 2974 [2022-01-18 12:23:36,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1151 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=807, Invalid=3885, Unknown=0, NotChecked=0, Total=4692 [2022-01-18 12:23:36,325 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 473 mSDsluCounter, 2420 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 2461 SdHoareTripleChecker+Invalid, 1274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:23:36,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [473 Valid, 2461 Invalid, 1274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:23:36,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2022-01-18 12:23:36,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 2044. [2022-01-18 12:23:36,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2044 states, 2043 states have (on average 2.8184043073910914) internal successors, (5758), 2043 states have internal predecessors, (5758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:36,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2044 states to 2044 states and 5758 transitions. [2022-01-18 12:23:36,352 INFO L78 Accepts]: Start accepts. Automaton has 2044 states and 5758 transitions. Word has length 72 [2022-01-18 12:23:36,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:23:36,352 INFO L470 AbstractCegarLoop]: Abstraction has 2044 states and 5758 transitions. [2022-01-18 12:23:36,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:36,352 INFO L276 IsEmpty]: Start isEmpty. Operand 2044 states and 5758 transitions. [2022-01-18 12:23:36,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:23:36,354 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:23:36,354 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:23:36,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (168)] Forceful destruction successful, exit code 0 [2022-01-18 12:23:36,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173,168 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:23:36,569 INFO L402 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:23:36,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:23:36,569 INFO L85 PathProgramCache]: Analyzing trace with hash -97794443, now seen corresponding path program 117 times [2022-01-18 12:23:36,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:23:36,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419158333] [2022-01-18 12:23:36,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:23:36,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:23:36,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:23:36,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:36,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:23:36,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419158333] [2022-01-18 12:23:36,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419158333] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:23:36,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603753218] [2022-01-18 12:23:36,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:23:36,767 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:23:36,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:23:36,767 INFO L229 MonitoredProcess]: Starting monitored process 169 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:23:36,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (169)] Waiting until timeout for monitored process [2022-01-18 12:23:36,886 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 12:23:36,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:23:36,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:23:36,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:23:37,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:37,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:23:37,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:37,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603753218] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:23:37,577 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:23:37,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 34 [2022-01-18 12:23:37,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342114485] [2022-01-18 12:23:37,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:23:37,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 12:23:37,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:23:37,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 12:23:37,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=965, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 12:23:37,578 INFO L87 Difference]: Start difference. First operand 2044 states and 5758 transitions. Second operand has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:38,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:23:38,217 INFO L93 Difference]: Finished difference Result 2865 states and 7843 transitions. [2022-01-18 12:23:38,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-18 12:23:38,218 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:23:38,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:23:38,222 INFO L225 Difference]: With dead ends: 2865 [2022-01-18 12:23:38,222 INFO L226 Difference]: Without dead ends: 2754 [2022-01-18 12:23:38,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 123 SyntacticMatches, 4 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=396, Invalid=2054, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 12:23:38,222 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 359 mSDsluCounter, 2274 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 2292 SdHoareTripleChecker+Invalid, 1035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:23:38,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 2292 Invalid, 1035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 12:23:38,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2754 states. [2022-01-18 12:23:38,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2754 to 2036. [2022-01-18 12:23:38,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2036 states, 2035 states have (on average 2.8186732186732186) internal successors, (5736), 2035 states have internal predecessors, (5736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:38,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2036 states to 2036 states and 5736 transitions. [2022-01-18 12:23:38,247 INFO L78 Accepts]: Start accepts. Automaton has 2036 states and 5736 transitions. Word has length 72 [2022-01-18 12:23:38,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:23:38,247 INFO L470 AbstractCegarLoop]: Abstraction has 2036 states and 5736 transitions. [2022-01-18 12:23:38,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:38,248 INFO L276 IsEmpty]: Start isEmpty. Operand 2036 states and 5736 transitions. [2022-01-18 12:23:38,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:23:38,250 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:23:38,250 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:23:38,265 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (169)] Ended with exit code 0 [2022-01-18 12:23:38,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174,169 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:23:38,450 INFO L402 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:23:38,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:23:38,450 INFO L85 PathProgramCache]: Analyzing trace with hash 865256109, now seen corresponding path program 118 times [2022-01-18 12:23:38,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:23:38,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877423547] [2022-01-18 12:23:38,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:23:38,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:23:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:23:38,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:38,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:23:38,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877423547] [2022-01-18 12:23:38,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877423547] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:23:38,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741137908] [2022-01-18 12:23:38,634 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:23:38,634 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:23:38,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:23:38,635 INFO L229 MonitoredProcess]: Starting monitored process 170 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:23:38,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (170)] Waiting until timeout for monitored process [2022-01-18 12:23:38,750 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:23:38,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:23:38,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:23:38,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:23:39,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:39,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:23:39,500 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:39,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741137908] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:23:39,500 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:23:39,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2022-01-18 12:23:39,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364733982] [2022-01-18 12:23:39,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:23:39,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 12:23:39,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:23:39,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 12:23:39,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1094, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 12:23:39,501 INFO L87 Difference]: Start difference. First operand 2036 states and 5736 transitions. Second operand has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:41,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:23:41,079 INFO L93 Difference]: Finished difference Result 3184 states and 8714 transitions. [2022-01-18 12:23:41,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-18 12:23:41,079 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:23:41,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:23:41,083 INFO L225 Difference]: With dead ends: 3184 [2022-01-18 12:23:41,083 INFO L226 Difference]: Without dead ends: 3052 [2022-01-18 12:23:41,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1589 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=887, Invalid=4965, Unknown=0, NotChecked=0, Total=5852 [2022-01-18 12:23:41,084 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 584 mSDsluCounter, 2705 mSDsCounter, 0 mSdLazyCounter, 1407 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 2741 SdHoareTripleChecker+Invalid, 1500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:23:41,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [584 Valid, 2741 Invalid, 1500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1407 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:23:41,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3052 states. [2022-01-18 12:23:41,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3052 to 2044. [2022-01-18 12:23:41,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2044 states, 2043 states have (on average 2.8144884973078805) internal successors, (5750), 2043 states have internal predecessors, (5750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:41,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2044 states to 2044 states and 5750 transitions. [2022-01-18 12:23:41,110 INFO L78 Accepts]: Start accepts. Automaton has 2044 states and 5750 transitions. Word has length 72 [2022-01-18 12:23:41,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:23:41,110 INFO L470 AbstractCegarLoop]: Abstraction has 2044 states and 5750 transitions. [2022-01-18 12:23:41,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:41,110 INFO L276 IsEmpty]: Start isEmpty. Operand 2044 states and 5750 transitions. [2022-01-18 12:23:41,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:23:41,112 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:23:41,112 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:23:41,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (170)] Forceful destruction successful, exit code 0 [2022-01-18 12:23:41,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175,170 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:23:41,312 INFO L402 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:23:41,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:23:41,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1630646035, now seen corresponding path program 119 times [2022-01-18 12:23:41,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:23:41,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967932300] [2022-01-18 12:23:41,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:23:41,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:23:41,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:23:41,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:41,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:23:41,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967932300] [2022-01-18 12:23:41,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967932300] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:23:41,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491654364] [2022-01-18 12:23:41,510 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:23:41,510 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:23:41,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:23:41,511 INFO L229 MonitoredProcess]: Starting monitored process 171 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:23:41,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (171)] Waiting until timeout for monitored process [2022-01-18 12:23:41,631 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:23:41,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:23:41,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 12:23:41,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:23:42,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:42,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:23:42,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:42,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491654364] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:23:42,587 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:23:42,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 41 [2022-01-18 12:23:42,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754875778] [2022-01-18 12:23:42,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:23:42,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 12:23:42,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:23:42,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 12:23:42,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1404, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 12:23:42,587 INFO L87 Difference]: Start difference. First operand 2044 states and 5750 transitions. Second operand has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:43,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:23:43,905 INFO L93 Difference]: Finished difference Result 2811 states and 7695 transitions. [2022-01-18 12:23:43,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 12:23:43,905 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:23:43,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:23:43,909 INFO L225 Difference]: With dead ends: 2811 [2022-01-18 12:23:43,909 INFO L226 Difference]: Without dead ends: 2715 [2022-01-18 12:23:43,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1278 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=801, Invalid=4311, Unknown=0, NotChecked=0, Total=5112 [2022-01-18 12:23:43,910 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 543 mSDsluCounter, 2947 mSDsCounter, 0 mSdLazyCounter, 1302 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 2944 SdHoareTripleChecker+Invalid, 1370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:23:43,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [543 Valid, 2944 Invalid, 1370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1302 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:23:43,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2715 states. [2022-01-18 12:23:43,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2715 to 2052. [2022-01-18 12:23:43,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2052 states, 2051 states have (on average 2.8142369575816675) internal successors, (5772), 2051 states have internal predecessors, (5772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:43,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2052 states to 2052 states and 5772 transitions. [2022-01-18 12:23:43,933 INFO L78 Accepts]: Start accepts. Automaton has 2052 states and 5772 transitions. Word has length 72 [2022-01-18 12:23:43,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:23:43,933 INFO L470 AbstractCegarLoop]: Abstraction has 2052 states and 5772 transitions. [2022-01-18 12:23:43,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:43,934 INFO L276 IsEmpty]: Start isEmpty. Operand 2052 states and 5772 transitions. [2022-01-18 12:23:43,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:23:43,935 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:23:43,936 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:23:43,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (171)] Forceful destruction successful, exit code 0 [2022-01-18 12:23:44,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176,171 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:23:44,136 INFO L402 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:23:44,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:23:44,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1044749005, now seen corresponding path program 120 times [2022-01-18 12:23:44,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:23:44,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862003366] [2022-01-18 12:23:44,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:23:44,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:23:44,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:23:44,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:44,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:23:44,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862003366] [2022-01-18 12:23:44,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862003366] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:23:44,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728220447] [2022-01-18 12:23:44,330 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:23:44,330 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:23:44,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:23:44,330 INFO L229 MonitoredProcess]: Starting monitored process 172 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:23:44,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (172)] Waiting until timeout for monitored process [2022-01-18 12:23:44,451 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 12:23:44,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:23:44,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:23:44,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:23:44,827 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:44,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:23:45,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:45,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728220447] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:23:45,228 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:23:45,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2022-01-18 12:23:45,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832626729] [2022-01-18 12:23:45,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:23:45,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 12:23:45,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:23:45,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 12:23:45,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1108, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 12:23:45,229 INFO L87 Difference]: Start difference. First operand 2052 states and 5772 transitions. Second operand has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:47,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:23:47,428 INFO L93 Difference]: Finished difference Result 3465 states and 9409 transitions. [2022-01-18 12:23:47,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-01-18 12:23:47,428 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:23:47,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:23:47,433 INFO L225 Difference]: With dead ends: 3465 [2022-01-18 12:23:47,434 INFO L226 Difference]: Without dead ends: 3318 [2022-01-18 12:23:47,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2462 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1203, Invalid=7539, Unknown=0, NotChecked=0, Total=8742 [2022-01-18 12:23:47,435 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 683 mSDsluCounter, 3337 mSDsCounter, 0 mSdLazyCounter, 1657 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 3349 SdHoareTripleChecker+Invalid, 1772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:23:47,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [683 Valid, 3349 Invalid, 1772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1657 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 12:23:47,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3318 states. [2022-01-18 12:23:47,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3318 to 2032. [2022-01-18 12:23:47,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2032 states, 2031 states have (on average 2.8148695224027573) internal successors, (5717), 2031 states have internal predecessors, (5717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:47,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2032 states to 2032 states and 5717 transitions. [2022-01-18 12:23:47,488 INFO L78 Accepts]: Start accepts. Automaton has 2032 states and 5717 transitions. Word has length 72 [2022-01-18 12:23:47,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:23:47,488 INFO L470 AbstractCegarLoop]: Abstraction has 2032 states and 5717 transitions. [2022-01-18 12:23:47,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:47,488 INFO L276 IsEmpty]: Start isEmpty. Operand 2032 states and 5717 transitions. [2022-01-18 12:23:47,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:23:47,490 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:23:47,490 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:23:47,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (172)] Forceful destruction successful, exit code 0 [2022-01-18 12:23:47,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 172 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable177 [2022-01-18 12:23:47,691 INFO L402 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:23:47,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:23:47,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1043075461, now seen corresponding path program 121 times [2022-01-18 12:23:47,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:23:47,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126058170] [2022-01-18 12:23:47,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:23:47,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:23:47,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:23:47,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:47,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:23:47,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126058170] [2022-01-18 12:23:47,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126058170] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:23:47,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598559308] [2022-01-18 12:23:47,875 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:23:47,875 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:23:47,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:23:47,876 INFO L229 MonitoredProcess]: Starting monitored process 173 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:23:47,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (173)] Waiting until timeout for monitored process [2022-01-18 12:23:47,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:23:47,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:23:47,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:23:48,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:48,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:23:48,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:48,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598559308] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:23:48,741 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:23:48,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2022-01-18 12:23:48,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334453488] [2022-01-18 12:23:48,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:23:48,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 12:23:48,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:23:48,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 12:23:48,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1100, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 12:23:48,742 INFO L87 Difference]: Start difference. First operand 2032 states and 5717 transitions. Second operand has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:49,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:23:49,753 INFO L93 Difference]: Finished difference Result 3010 states and 8183 transitions. [2022-01-18 12:23:49,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 12:23:49,753 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:23:49,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:23:49,757 INFO L225 Difference]: With dead ends: 3010 [2022-01-18 12:23:49,757 INFO L226 Difference]: Without dead ends: 2848 [2022-01-18 12:23:49,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=578, Invalid=3712, Unknown=0, NotChecked=0, Total=4290 [2022-01-18 12:23:49,758 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 587 mSDsluCounter, 2217 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 2252 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:23:49,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [587 Valid, 2252 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1055 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:23:49,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2848 states. [2022-01-18 12:23:49,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2848 to 2040. [2022-01-18 12:23:49,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2040 states, 2039 states have (on average 2.8165767533104464) internal successors, (5743), 2039 states have internal predecessors, (5743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:49,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2040 states to 2040 states and 5743 transitions. [2022-01-18 12:23:49,782 INFO L78 Accepts]: Start accepts. Automaton has 2040 states and 5743 transitions. Word has length 72 [2022-01-18 12:23:49,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:23:49,783 INFO L470 AbstractCegarLoop]: Abstraction has 2040 states and 5743 transitions. [2022-01-18 12:23:49,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:49,783 INFO L276 IsEmpty]: Start isEmpty. Operand 2040 states and 5743 transitions. [2022-01-18 12:23:49,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:23:49,785 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:23:49,785 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:23:49,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (173)] Forceful destruction successful, exit code 0 [2022-01-18 12:23:49,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178,173 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:23:49,985 INFO L402 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:23:49,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:23:49,985 INFO L85 PathProgramCache]: Analyzing trace with hash -463424235, now seen corresponding path program 122 times [2022-01-18 12:23:49,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:23:49,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825505711] [2022-01-18 12:23:49,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:23:49,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:23:49,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:23:50,165 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:50,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:23:50,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825505711] [2022-01-18 12:23:50,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825505711] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:23:50,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406732663] [2022-01-18 12:23:50,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:23:50,165 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:23:50,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:23:50,166 INFO L229 MonitoredProcess]: Starting monitored process 174 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:23:50,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (174)] Waiting until timeout for monitored process [2022-01-18 12:23:50,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:23:50,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:23:50,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:23:50,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:23:50,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:50,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:23:51,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:51,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406732663] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:23:51,037 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:23:51,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2022-01-18 12:23:51,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374575113] [2022-01-18 12:23:51,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:23:51,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 12:23:51,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:23:51,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 12:23:51,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1107, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 12:23:51,038 INFO L87 Difference]: Start difference. First operand 2040 states and 5743 transitions. Second operand has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:53,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:23:53,141 INFO L93 Difference]: Finished difference Result 3600 states and 9724 transitions. [2022-01-18 12:23:53,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-01-18 12:23:53,141 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:23:53,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:23:53,146 INFO L225 Difference]: With dead ends: 3600 [2022-01-18 12:23:53,146 INFO L226 Difference]: Without dead ends: 3438 [2022-01-18 12:23:53,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2594 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1029, Invalid=7527, Unknown=0, NotChecked=0, Total=8556 [2022-01-18 12:23:53,146 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 870 mSDsluCounter, 2457 mSDsCounter, 0 mSdLazyCounter, 1302 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 2486 SdHoareTripleChecker+Invalid, 1393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:23:53,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [870 Valid, 2486 Invalid, 1393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1302 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:23:53,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3438 states. [2022-01-18 12:23:53,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3438 to 2060. [2022-01-18 12:23:53,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2060 states, 2059 states have (on average 2.817872753763963) internal successors, (5802), 2059 states have internal predecessors, (5802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:53,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2060 states to 2060 states and 5802 transitions. [2022-01-18 12:23:53,172 INFO L78 Accepts]: Start accepts. Automaton has 2060 states and 5802 transitions. Word has length 72 [2022-01-18 12:23:53,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:23:53,172 INFO L470 AbstractCegarLoop]: Abstraction has 2060 states and 5802 transitions. [2022-01-18 12:23:53,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:53,172 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states and 5802 transitions. [2022-01-18 12:23:53,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:23:53,174 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:23:53,174 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:23:53,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (174)] Forceful destruction successful, exit code 0 [2022-01-18 12:23:53,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 174 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable179 [2022-01-18 12:23:53,375 INFO L402 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:23:53,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:23:53,375 INFO L85 PathProgramCache]: Analyzing trace with hash -2082996491, now seen corresponding path program 123 times [2022-01-18 12:23:53,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:23:53,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497971807] [2022-01-18 12:23:53,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:23:53,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:23:53,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:23:53,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:53,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:23:53,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497971807] [2022-01-18 12:23:53,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497971807] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:23:53,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725663106] [2022-01-18 12:23:53,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:23:53,553 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:23:53,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:23:53,553 INFO L229 MonitoredProcess]: Starting monitored process 175 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:23:53,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (175)] Waiting until timeout for monitored process [2022-01-18 12:23:53,694 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 12:23:53,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:23:53,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:23:53,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:23:54,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:54,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:23:54,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:54,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725663106] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:23:54,447 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:23:54,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2022-01-18 12:23:54,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434896410] [2022-01-18 12:23:54,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:23:54,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 12:23:54,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:23:54,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 12:23:54,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1083, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 12:23:54,448 INFO L87 Difference]: Start difference. First operand 2060 states and 5802 transitions. Second operand has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:56,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:23:56,961 INFO L93 Difference]: Finished difference Result 3953 states and 10625 transitions. [2022-01-18 12:23:56,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-01-18 12:23:56,961 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:23:56,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:23:56,967 INFO L225 Difference]: With dead ends: 3953 [2022-01-18 12:23:56,967 INFO L226 Difference]: Without dead ends: 3821 [2022-01-18 12:23:56,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3454 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1502, Invalid=9210, Unknown=0, NotChecked=0, Total=10712 [2022-01-18 12:23:56,968 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 1072 mSDsluCounter, 2727 mSDsCounter, 0 mSdLazyCounter, 1440 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 2745 SdHoareTripleChecker+Invalid, 1556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:23:56,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1072 Valid, 2745 Invalid, 1556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1440 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:23:56,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3821 states. [2022-01-18 12:23:56,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3821 to 2048. [2022-01-18 12:23:56,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2048 states, 2047 states have (on average 2.814362481680508) internal successors, (5761), 2047 states have internal predecessors, (5761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:56,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2048 states to 2048 states and 5761 transitions. [2022-01-18 12:23:56,997 INFO L78 Accepts]: Start accepts. Automaton has 2048 states and 5761 transitions. Word has length 72 [2022-01-18 12:23:56,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:23:56,997 INFO L470 AbstractCegarLoop]: Abstraction has 2048 states and 5761 transitions. [2022-01-18 12:23:56,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:56,997 INFO L276 IsEmpty]: Start isEmpty. Operand 2048 states and 5761 transitions. [2022-01-18 12:23:56,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:23:56,999 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:23:56,999 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:23:57,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (175)] Forceful destruction successful, exit code 0 [2022-01-18 12:23:57,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 175 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable180 [2022-01-18 12:23:57,200 INFO L402 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:23:57,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:23:57,200 INFO L85 PathProgramCache]: Analyzing trace with hash -470377875, now seen corresponding path program 124 times [2022-01-18 12:23:57,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:23:57,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826789753] [2022-01-18 12:23:57,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:23:57,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:23:57,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:23:57,376 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:57,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:23:57,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826789753] [2022-01-18 12:23:57,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826789753] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:23:57,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888233335] [2022-01-18 12:23:57,376 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:23:57,376 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:23:57,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:23:57,377 INFO L229 MonitoredProcess]: Starting monitored process 176 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:23:57,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (176)] Waiting until timeout for monitored process [2022-01-18 12:23:57,499 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:23:57,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:23:57,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:23:57,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:23:57,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:57,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:23:58,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:58,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888233335] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:23:58,242 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:23:58,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2022-01-18 12:23:58,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695674771] [2022-01-18 12:23:58,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:23:58,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 12:23:58,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:23:58,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 12:23:58,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1097, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 12:23:58,243 INFO L87 Difference]: Start difference. First operand 2048 states and 5761 transitions. Second operand has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:59,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:23:59,140 INFO L93 Difference]: Finished difference Result 2766 states and 7551 transitions. [2022-01-18 12:23:59,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 12:23:59,141 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:23:59,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:23:59,144 INFO L225 Difference]: With dead ends: 2766 [2022-01-18 12:23:59,144 INFO L226 Difference]: Without dead ends: 2589 [2022-01-18 12:23:59,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 985 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=474, Invalid=3308, Unknown=0, NotChecked=0, Total=3782 [2022-01-18 12:23:59,145 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 552 mSDsluCounter, 2240 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 2278 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:23:59,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [552 Valid, 2278 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 12:23:59,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2589 states. [2022-01-18 12:23:59,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2589 to 2048. [2022-01-18 12:23:59,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2048 states, 2047 states have (on average 2.812408402540303) internal successors, (5757), 2047 states have internal predecessors, (5757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:59,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2048 states to 2048 states and 5757 transitions. [2022-01-18 12:23:59,175 INFO L78 Accepts]: Start accepts. Automaton has 2048 states and 5757 transitions. Word has length 72 [2022-01-18 12:23:59,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:23:59,175 INFO L470 AbstractCegarLoop]: Abstraction has 2048 states and 5757 transitions. [2022-01-18 12:23:59,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:59,175 INFO L276 IsEmpty]: Start isEmpty. Operand 2048 states and 5757 transitions. [2022-01-18 12:23:59,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:23:59,177 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:23:59,177 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:23:59,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (176)] Forceful destruction successful, exit code 0 [2022-01-18 12:23:59,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181,176 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:23:59,378 INFO L402 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:23:59,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:23:59,378 INFO L85 PathProgramCache]: Analyzing trace with hash 6817613, now seen corresponding path program 125 times [2022-01-18 12:23:59,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:23:59,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553109343] [2022-01-18 12:23:59,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:23:59,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:23:59,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:23:59,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:59,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:23:59,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553109343] [2022-01-18 12:23:59,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553109343] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:23:59,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476168788] [2022-01-18 12:23:59,593 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:23:59,593 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:23:59,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:23:59,594 INFO L229 MonitoredProcess]: Starting monitored process 177 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:23:59,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (177)] Waiting until timeout for monitored process [2022-01-18 12:23:59,714 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 12:23:59,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:23:59,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:23:59,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:24:00,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:24:00,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:24:00,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:24:00,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476168788] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:24:00,469 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:24:00,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 12:24:00,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611532190] [2022-01-18 12:24:00,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:24:00,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 12:24:00,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:24:00,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 12:24:00,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1154, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 12:24:00,470 INFO L87 Difference]: Start difference. First operand 2048 states and 5757 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:24:01,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:24:01,417 INFO L93 Difference]: Finished difference Result 2978 states and 8093 transitions. [2022-01-18 12:24:01,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 12:24:01,418 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:24:01,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:24:01,422 INFO L225 Difference]: With dead ends: 2978 [2022-01-18 12:24:01,422 INFO L226 Difference]: Without dead ends: 2927 [2022-01-18 12:24:01,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=625, Invalid=3281, Unknown=0, NotChecked=0, Total=3906 [2022-01-18 12:24:01,422 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 477 mSDsluCounter, 2185 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 2244 SdHoareTripleChecker+Invalid, 1072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:24:01,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [477 Valid, 2244 Invalid, 1072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 12:24:01,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2022-01-18 12:24:01,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 2068. [2022-01-18 12:24:01,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2068 states, 2067 states have (on average 2.813739719400097) internal successors, (5816), 2067 states have internal predecessors, (5816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:24:01,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2068 states to 2068 states and 5816 transitions. [2022-01-18 12:24:01,449 INFO L78 Accepts]: Start accepts. Automaton has 2068 states and 5816 transitions. Word has length 72 [2022-01-18 12:24:01,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:24:01,449 INFO L470 AbstractCegarLoop]: Abstraction has 2068 states and 5816 transitions. [2022-01-18 12:24:01,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:24:01,450 INFO L276 IsEmpty]: Start isEmpty. Operand 2068 states and 5816 transitions. [2022-01-18 12:24:01,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:24:01,452 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:24:01,452 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:24:01,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (177)] Forceful destruction successful, exit code 0 [2022-01-18 12:24:01,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182,177 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:24:01,668 INFO L402 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:24:01,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:24:01,668 INFO L85 PathProgramCache]: Analyzing trace with hash -464374085, now seen corresponding path program 126 times [2022-01-18 12:24:01,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:24:01,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658517812] [2022-01-18 12:24:01,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:24:01,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:24:01,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:24:01,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:24:01,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:24:01,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658517812] [2022-01-18 12:24:01,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658517812] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:24:01,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179524690] [2022-01-18 12:24:01,864 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:24:01,864 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:24:01,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:24:01,865 INFO L229 MonitoredProcess]: Starting monitored process 178 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:24:01,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (178)] Waiting until timeout for monitored process [2022-01-18 12:24:01,994 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 12:24:01,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:24:01,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:24:01,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:24:02,384 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:24:02,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:24:02,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:24:02,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179524690] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:24:02,781 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:24:02,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 12:24:02,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898246305] [2022-01-18 12:24:02,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:24:02,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 12:24:02,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:24:02,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 12:24:02,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1166, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 12:24:02,782 INFO L87 Difference]: Start difference. First operand 2068 states and 5816 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:24:04,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:24:04,614 INFO L93 Difference]: Finished difference Result 3186 states and 8649 transitions. [2022-01-18 12:24:04,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-18 12:24:04,614 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:24:04,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:24:04,619 INFO L225 Difference]: With dead ends: 3186 [2022-01-18 12:24:04,619 INFO L226 Difference]: Without dead ends: 3135 [2022-01-18 12:24:04,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1796 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1118, Invalid=5854, Unknown=0, NotChecked=0, Total=6972 [2022-01-18 12:24:04,620 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 521 mSDsluCounter, 2965 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 3023 SdHoareTripleChecker+Invalid, 1550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:24:04,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [521 Valid, 3023 Invalid, 1550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:24:04,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3135 states. [2022-01-18 12:24:04,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3135 to 2084. [2022-01-18 12:24:04,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2084 states, 2083 states have (on average 2.815170427268363) internal successors, (5864), 2083 states have internal predecessors, (5864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:24:04,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2084 states to 2084 states and 5864 transitions. [2022-01-18 12:24:04,645 INFO L78 Accepts]: Start accepts. Automaton has 2084 states and 5864 transitions. Word has length 72 [2022-01-18 12:24:04,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:24:04,645 INFO L470 AbstractCegarLoop]: Abstraction has 2084 states and 5864 transitions. [2022-01-18 12:24:04,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:24:04,646 INFO L276 IsEmpty]: Start isEmpty. Operand 2084 states and 5864 transitions. [2022-01-18 12:24:04,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:24:04,648 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:24:04,648 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:24:04,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (178)] Forceful destruction successful, exit code 0 [2022-01-18 12:24:04,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183,178 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:24:04,848 INFO L402 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:24:04,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:24:04,848 INFO L85 PathProgramCache]: Analyzing trace with hash -765647761, now seen corresponding path program 127 times [2022-01-18 12:24:04,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:24:04,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515252555] [2022-01-18 12:24:04,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:24:04,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:24:04,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:24:05,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:24:05,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:24:05,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515252555] [2022-01-18 12:24:05,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515252555] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:24:05,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092728034] [2022-01-18 12:24:05,059 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:24:05,059 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:24:05,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:24:05,060 INFO L229 MonitoredProcess]: Starting monitored process 179 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:24:05,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (179)] Waiting until timeout for monitored process [2022-01-18 12:24:05,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:24:05,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 12:24:05,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:24:05,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:24:05,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:24:05,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:24:05,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092728034] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:24:05,950 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:24:05,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 12:24:05,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438342259] [2022-01-18 12:24:05,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:24:05,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 12:24:05,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:24:05,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 12:24:05,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1144, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 12:24:05,951 INFO L87 Difference]: Start difference. First operand 2084 states and 5864 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:24:08,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:24:08,122 INFO L93 Difference]: Finished difference Result 3367 states and 9106 transitions. [2022-01-18 12:24:08,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-01-18 12:24:08,122 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 12:24:08,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:24:08,126 INFO L225 Difference]: With dead ends: 3367 [2022-01-18 12:24:08,127 INFO L226 Difference]: Without dead ends: 3316 [2022-01-18 12:24:08,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2417 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1541, Invalid=7015, Unknown=0, NotChecked=0, Total=8556 [2022-01-18 12:24:08,127 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 712 mSDsluCounter, 2889 mSDsCounter, 0 mSdLazyCounter, 1512 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 2944 SdHoareTripleChecker+Invalid, 1607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:24:08,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [712 Valid, 2944 Invalid, 1607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1512 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:24:08,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3316 states. [2022-01-18 12:24:08,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3316 to 2100. [2022-01-18 12:24:08,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2100 states, 2099 states have (on average 2.8222963315864695) internal successors, (5924), 2099 states have internal predecessors, (5924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:24:08,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2100 states to 2100 states and 5924 transitions. [2022-01-18 12:24:08,153 INFO L78 Accepts]: Start accepts. Automaton has 2100 states and 5924 transitions. Word has length 72 [2022-01-18 12:24:08,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:24:08,154 INFO L470 AbstractCegarLoop]: Abstraction has 2100 states and 5924 transitions. [2022-01-18 12:24:08,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:24:08,154 INFO L276 IsEmpty]: Start isEmpty. Operand 2100 states and 5924 transitions. [2022-01-18 12:24:08,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 12:24:08,156 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:24:08,156 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:24:08,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (179)] Forceful destruction successful, exit code 0 [2022-01-18 12:24:08,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,179 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:24:08,356 INFO L402 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:24:08,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:24:08,357 INFO L85 PathProgramCache]: Analyzing trace with hash 667800547, now seen corresponding path program 128 times [2022-01-18 12:24:08,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:24:08,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566480496] [2022-01-18 12:24:08,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:24:08,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:24:08,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2022-01-18 12:24:08,557 WARN L244 SmtUtils]: Removed 5 from assertion stack [2022-01-18 12:24:08,559 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-18 12:24:08,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2022-01-18 12:24:08,559 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 73 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 13 for 2ms.. [2022-01-18 12:24:08,560 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-18 12:24:08,560 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-18 12:24:08,562 INFO L732 BasicCegarLoop]: Path program histogram: [128, 51, 6, 1] [2022-01-18 12:24:08,563 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 12:24:08,563 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 12:24:08,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 12:24:08 BasicIcfg [2022-01-18 12:24:08,564 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 12:24:08,564 INFO L158 Benchmark]: Toolchain (without parser) took 744812.59ms. Allocated memory was 385.9MB in the beginning and 566.2MB in the end (delta: 180.4MB). Free memory was 327.3MB in the beginning and 385.9MB in the end (delta: -58.6MB). Peak memory consumption was 124.9MB. Max. memory is 16.0GB. [2022-01-18 12:24:08,564 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 385.9MB. Free memory is still 344.3MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 12:24:08,565 INFO L158 Benchmark]: CACSL2BoogieTranslator took 193.43ms. Allocated memory was 385.9MB in the beginning and 471.9MB in the end (delta: 86.0MB). Free memory was 327.1MB in the beginning and 440.9MB in the end (delta: -113.8MB). Peak memory consumption was 6.6MB. Max. memory is 16.0GB. [2022-01-18 12:24:08,565 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.53ms. Allocated memory is still 471.9MB. Free memory was 440.9MB in the beginning and 438.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 12:24:08,565 INFO L158 Benchmark]: Boogie Preprocessor took 29.59ms. Allocated memory is still 471.9MB. Free memory was 438.8MB in the beginning and 437.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 12:24:08,565 INFO L158 Benchmark]: RCFGBuilder took 303.98ms. Allocated memory is still 471.9MB. Free memory was 437.8MB in the beginning and 422.1MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2022-01-18 12:24:08,566 INFO L158 Benchmark]: TraceAbstraction took 744252.51ms. Allocated memory was 471.9MB in the beginning and 566.2MB in the end (delta: 94.4MB). Free memory was 421.0MB in the beginning and 385.9MB in the end (delta: 35.1MB). Peak memory consumption was 131.6MB. Max. memory is 16.0GB. [2022-01-18 12:24:08,566 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 385.9MB. Free memory is still 344.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 193.43ms. Allocated memory was 385.9MB in the beginning and 471.9MB in the end (delta: 86.0MB). Free memory was 327.1MB in the beginning and 440.9MB in the end (delta: -113.8MB). Peak memory consumption was 6.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 27.53ms. Allocated memory is still 471.9MB. Free memory was 440.9MB in the beginning and 438.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 29.59ms. Allocated memory is still 471.9MB. Free memory was 438.8MB in the beginning and 437.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 303.98ms. Allocated memory is still 471.9MB. Free memory was 437.8MB in the beginning and 422.1MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 744252.51ms. Allocated memory was 471.9MB in the beginning and 566.2MB in the end (delta: 94.4MB). Free memory was 421.0MB in the beginning and 385.9MB in the end (delta: 35.1MB). Peak memory consumption was 131.6MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was analyzing trace of length 73 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 13 for 2ms.. - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 73 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 13 for 2ms.. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 73 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 13 for 2ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 104 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 744.2s, OverallIterations: 186, TraceHistogramMax: 2, PathProgramHistogramMax: 128, EmptinessCheckTime: 0.4s, AutomataDifference: 490.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 172745 SdHoareTripleChecker+Valid, 105.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 172745 mSDsluCounter, 640415 SdHoareTripleChecker+Invalid, 88.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 637430 mSDsCounter, 18982 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 299195 IncrementalHoareTripleChecker+Invalid, 318177 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18982 mSolverCounterUnsat, 35532 mSDtfsCounter, 299195 mSolverCounterSat, 1.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 39285 GetRequests, 21125 SyntacticMatches, 520 SemanticMatches, 17640 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747440 ImplicationChecksByTransitivity, 457.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2100occurred in iteration=169, InterpolantAutomatonStates: 13475, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.6s AutomataMinimizationTime, 185 MinimizatonAttempts, 258235 StatesRemovedByMinimization, 184 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.1s SsaConstructionTime, 3.2s SatisfiabilityAnalysisTime, 195.1s InterpolantComputationTime, 25866 NumberOfCodeBlocks, 25692 NumberOfCodeBlocksAsserted, 533 NumberOfCheckSat, 38041 ConstructedInterpolants, 0 QuantifiedInterpolants, 353314 SizeOfPredicates, 2220 NumberOfNonLiveVariables, 28553 ConjunctsInSsa, 4262 ConjunctsInUnsatCore, 541 InterpolantComputations, 7 PerfectInterpolantSequences, 0/1473 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout [2022-01-18 12:24:08,579 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end Completed graceful shutdown