/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-proofs-counter-add-4-semi-Q67.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 12:59:15,018 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 12:59:15,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 12:59:15,068 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 12:59:15,068 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 12:59:15,071 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 12:59:15,072 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 12:59:15,075 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 12:59:15,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 12:59:15,080 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 12:59:15,081 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 12:59:15,082 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 12:59:15,082 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 12:59:15,083 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 12:59:15,084 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 12:59:15,087 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 12:59:15,087 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 12:59:15,088 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 12:59:15,089 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 12:59:15,089 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 12:59:15,090 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 12:59:15,091 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 12:59:15,092 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 12:59:15,093 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 12:59:15,097 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-18 12:59:15,097 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-18 12:59:15,097 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-18 12:59:15,098 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-18 12:59:15,098 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-18 12:59:15,099 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-18 12:59:15,099 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-18 12:59:15,099 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-18 12:59:15,100 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-18 12:59:15,101 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-18 12:59:15,102 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-18 12:59:15,102 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-18 12:59:15,102 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-18 12:59:15,102 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-18 12:59:15,102 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 12:59:15,103 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 12:59:15,103 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 12:59:15,104 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 12:59:15,126 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 12:59:15,127 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 12:59:15,127 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 12:59:15,127 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 12:59:15,128 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 12:59:15,128 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 12:59:15,128 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 12:59:15,128 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 12:59:15,128 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 12:59:15,128 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 12:59:15,129 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 12:59:15,129 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 12:59:15,129 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 12:59:15,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 12:59:15,129 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 12:59:15,129 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 12:59:15,129 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 12:59:15,129 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 12:59:15,130 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 12:59:15,130 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 12:59:15,130 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 12:59:15,130 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 12:59:15,130 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 12:59:15,130 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 12:59:15,130 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 12:59:15,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 12:59:15,130 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 12:59:15,130 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 12:59:15,130 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 12:59:15,131 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 12:59:15,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 12:59:15,131 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 12:59:15,131 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 12:59:15,131 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2022-01-18 12:59:15,131 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 12:59:15,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 12:59:15,326 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 12:59:15,328 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 12:59:15,328 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 12:59:15,330 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 12:59:15,331 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2022-01-18 12:59:15,371 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf04e795d/ee61469c9495424c99b8e75acea389e0/FLAGfefc04514 [2022-01-18 12:59:15,744 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 12:59:15,744 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2022-01-18 12:59:15,752 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf04e795d/ee61469c9495424c99b8e75acea389e0/FLAGfefc04514 [2022-01-18 12:59:15,765 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf04e795d/ee61469c9495424c99b8e75acea389e0 [2022-01-18 12:59:15,766 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 12:59:15,768 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 12:59:15,769 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 12:59:15,769 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 12:59:15,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 12:59:15,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 12:59:15" (1/1) ... [2022-01-18 12:59:15,772 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4de9ecfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:59:15, skipping insertion in model container [2022-01-18 12:59:15,772 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 12:59:15" (1/1) ... [2022-01-18 12:59:15,776 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 12:59:15,789 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 12:59:15,973 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-proofs-counter-add-4-semi-Q67.wvr.c[2611,2624] [2022-01-18 12:59:15,977 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 12:59:15,984 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 12:59:16,015 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-proofs-counter-add-4-semi-Q67.wvr.c[2611,2624] [2022-01-18 12:59:16,015 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 12:59:16,026 INFO L208 MainTranslator]: Completed translation [2022-01-18 12:59:16,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:59:16 WrapperNode [2022-01-18 12:59:16,026 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 12:59:16,027 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 12:59:16,027 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 12:59:16,028 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 12:59:16,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:59:16" (1/1) ... [2022-01-18 12:59:16,045 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:59:16" (1/1) ... [2022-01-18 12:59:16,066 INFO L137 Inliner]: procedures = 22, calls = 42, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 133 [2022-01-18 12:59:16,066 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 12:59:16,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 12:59:16,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 12:59:16,067 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 12:59:16,072 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:59:16" (1/1) ... [2022-01-18 12:59:16,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:59:16" (1/1) ... [2022-01-18 12:59:16,079 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:59:16" (1/1) ... [2022-01-18 12:59:16,079 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:59:16" (1/1) ... [2022-01-18 12:59:16,085 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:59:16" (1/1) ... [2022-01-18 12:59:16,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:59:16" (1/1) ... [2022-01-18 12:59:16,088 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:59:16" (1/1) ... [2022-01-18 12:59:16,090 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 12:59:16,090 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 12:59:16,091 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 12:59:16,091 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 12:59:16,091 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:59:16" (1/1) ... [2022-01-18 12:59:16,096 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 12:59:16,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:59:16,118 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 12:59:16,119 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 12:59:16,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 12:59:16,145 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 12:59:16,145 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 12:59:16,145 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 12:59:16,146 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 12:59:16,146 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-18 12:59:16,146 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-18 12:59:16,146 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-01-18 12:59:16,146 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-01-18 12:59:16,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 12:59:16,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 12:59:16,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 12:59:16,146 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-18 12:59:16,146 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-18 12:59:16,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 12:59:16,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 12:59:16,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-18 12:59:16,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 12:59:16,148 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 12:59:16,230 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 12:59:16,232 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 12:59:16,445 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 12:59:16,492 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 12:59:16,492 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-01-18 12:59:16,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 12:59:16 BoogieIcfgContainer [2022-01-18 12:59:16,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 12:59:16,500 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 12:59:16,500 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 12:59:16,502 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 12:59:16,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 12:59:15" (1/3) ... [2022-01-18 12:59:16,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aaeb2a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 12:59:16, skipping insertion in model container [2022-01-18 12:59:16,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:59:16" (2/3) ... [2022-01-18 12:59:16,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aaeb2a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 12:59:16, skipping insertion in model container [2022-01-18 12:59:16,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 12:59:16" (3/3) ... [2022-01-18 12:59:16,504 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-proofs-counter-add-4-semi-Q67.wvr.c [2022-01-18 12:59:16,507 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 12:59:16,507 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 12:59:16,508 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 12:59:16,508 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 12:59:16,534 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,534 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,535 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,535 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,535 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,535 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,535 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,536 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,538 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,538 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,539 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,539 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,539 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,539 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,539 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,539 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,540 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,540 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,540 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,540 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,543 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,543 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,544 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,544 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,544 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,544 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,544 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,544 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,548 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,548 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,548 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,549 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,549 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,549 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,549 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,549 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,550 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,550 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,550 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,550 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,554 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,554 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,554 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,554 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,555 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,556 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,556 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,556 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,557 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,559 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,559 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,559 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,560 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,560 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,561 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,561 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,561 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,561 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,562 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,562 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:59:16,571 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-01-18 12:59:16,599 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 12:59:16,604 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 12:59:16,604 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-18 12:59:16,613 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 134 places, 131 transitions, 294 flow [2022-01-18 12:59:16,809 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3953 states, 3952 states have (on average 5.05414979757085) internal successors, (19974), 3952 states have internal predecessors, (19974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:59:16,827 INFO L276 IsEmpty]: Start isEmpty. Operand has 3953 states, 3952 states have (on average 5.05414979757085) internal successors, (19974), 3952 states have internal predecessors, (19974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:59:16,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-18 12:59:16,863 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:59:16,864 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, 1, 1, 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 12:59:16,865 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 12:59:16,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:59:16,871 INFO L85 PathProgramCache]: Analyzing trace with hash 621740972, now seen corresponding path program 1 times [2022-01-18 12:59:16,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:59:16,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525926143] [2022-01-18 12:59:16,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:59:16,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:59:17,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:59:17,097 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 12:59:17,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:59:17,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525926143] [2022-01-18 12:59:17,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525926143] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:59:17,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:59:17,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 12:59:17,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472312070] [2022-01-18 12:59:17,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:59:17,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-18 12:59:17,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:59:17,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-18 12:59:17,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 12:59:17,166 INFO L87 Difference]: Start difference. First operand has 3953 states, 3952 states have (on average 5.05414979757085) internal successors, (19974), 3952 states have internal predecessors, (19974), 0 states have call successors, (0), 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 49.0) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:59:17,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:59:17,285 INFO L93 Difference]: Finished difference Result 3953 states and 17198 transitions. [2022-01-18 12:59:17,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-18 12:59:17,286 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 49.0) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-01-18 12:59:17,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:59:17,330 INFO L225 Difference]: With dead ends: 3953 [2022-01-18 12:59:17,330 INFO L226 Difference]: Without dead ends: 3951 [2022-01-18 12:59:17,332 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 12:59:17,334 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:59:17,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 96 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 12:59:17,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3951 states. [2022-01-18 12:59:17,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3951 to 3951. [2022-01-18 12:59:17,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3951 states, 3950 states have (on average 4.353417721518987) internal successors, (17196), 3950 states have internal predecessors, (17196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:59:17,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3951 states to 3951 states and 17196 transitions. [2022-01-18 12:59:17,533 INFO L78 Accepts]: Start accepts. Automaton has 3951 states and 17196 transitions. Word has length 98 [2022-01-18 12:59:17,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:59:17,534 INFO L470 AbstractCegarLoop]: Abstraction has 3951 states and 17196 transitions. [2022-01-18 12:59:17,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 49.0) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:59:17,535 INFO L276 IsEmpty]: Start isEmpty. Operand 3951 states and 17196 transitions. [2022-01-18 12:59:17,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-18 12:59:17,548 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:59:17,548 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, 1, 1, 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 12:59:17,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 12:59:17,549 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 12:59:17,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:59:17,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1371881006, now seen corresponding path program 1 times [2022-01-18 12:59:17,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:59:17,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485828087] [2022-01-18 12:59:17,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:59:17,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:59:17,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:59:17,770 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 12:59:17,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:59:17,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485828087] [2022-01-18 12:59:17,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485828087] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:59:17,771 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:59:17,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 12:59:17,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783287502] [2022-01-18 12:59:17,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:59:17,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 12:59:17,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:59:17,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 12:59:17,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 12:59:17,773 INFO L87 Difference]: Start difference. First operand 3951 states and 17196 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:59:18,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:59:18,005 INFO L93 Difference]: Finished difference Result 7852 states and 32994 transitions. [2022-01-18 12:59:18,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 12:59:18,006 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-01-18 12:59:18,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:59:18,043 INFO L225 Difference]: With dead ends: 7852 [2022-01-18 12:59:18,043 INFO L226 Difference]: Without dead ends: 6391 [2022-01-18 12:59:18,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 12:59:18,047 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 8 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:59:18,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 328 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 12:59:18,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6391 states. [2022-01-18 12:59:18,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6391 to 6031. [2022-01-18 12:59:18,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6031 states, 6030 states have (on average 4.253233830845772) internal successors, (25647), 6030 states have internal predecessors, (25647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:59:18,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6031 states to 6031 states and 25647 transitions. [2022-01-18 12:59:18,252 INFO L78 Accepts]: Start accepts. Automaton has 6031 states and 25647 transitions. Word has length 98 [2022-01-18 12:59:18,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:59:18,255 INFO L470 AbstractCegarLoop]: Abstraction has 6031 states and 25647 transitions. [2022-01-18 12:59:18,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:59:18,255 INFO L276 IsEmpty]: Start isEmpty. Operand 6031 states and 25647 transitions. [2022-01-18 12:59:18,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-18 12:59:18,272 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:59:18,272 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, 1, 1, 1, 1, 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 12:59:18,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 12:59:18,273 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 12:59:18,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:59:18,273 INFO L85 PathProgramCache]: Analyzing trace with hash -330592620, now seen corresponding path program 1 times [2022-01-18 12:59:18,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:59:18,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113986767] [2022-01-18 12:59:18,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:59:18,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:59:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:59:18,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:59:18,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:59:18,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113986767] [2022-01-18 12:59:18,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113986767] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:59:18,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:59:18,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 12:59:18,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561551221] [2022-01-18 12:59:18,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:59:18,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 12:59:18,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:59:18,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 12:59:18,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-18 12:59:18,507 INFO L87 Difference]: Start difference. First operand 6031 states and 25647 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:59:18,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:59:18,931 INFO L93 Difference]: Finished difference Result 12359 states and 52502 transitions. [2022-01-18 12:59:18,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 12:59:18,931 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2022-01-18 12:59:18,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:59:19,016 INFO L225 Difference]: With dead ends: 12359 [2022-01-18 12:59:19,017 INFO L226 Difference]: Without dead ends: 11771 [2022-01-18 12:59:19,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-01-18 12:59:19,026 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 358 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 12:59:19,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [358 Valid, 589 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 12:59:19,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11771 states. [2022-01-18 12:59:19,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11771 to 5443. [2022-01-18 12:59:19,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5443 states, 5442 states have (on average 4.299889746416759) internal successors, (23400), 5442 states have internal predecessors, (23400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:59:19,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5443 states to 5443 states and 23400 transitions. [2022-01-18 12:59:19,265 INFO L78 Accepts]: Start accepts. Automaton has 5443 states and 23400 transitions. Word has length 100 [2022-01-18 12:59:19,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:59:19,265 INFO L470 AbstractCegarLoop]: Abstraction has 5443 states and 23400 transitions. [2022-01-18 12:59:19,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:59:19,266 INFO L276 IsEmpty]: Start isEmpty. Operand 5443 states and 23400 transitions. [2022-01-18 12:59:19,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-18 12:59:19,281 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:59:19,281 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, 1, 1, 1, 1, 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 12:59:19,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 12:59:19,281 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 12:59:19,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:59:19,282 INFO L85 PathProgramCache]: Analyzing trace with hash -858528176, now seen corresponding path program 1 times [2022-01-18 12:59:19,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:59:19,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803035249] [2022-01-18 12:59:19,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:59:19,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:59:19,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:59:19,547 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 12:59:19,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:59:19,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803035249] [2022-01-18 12:59:19,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803035249] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:59:19,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928360385] [2022-01-18 12:59:19,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:59:19,548 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:59:19,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:59:19,549 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 12:59:19,550 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 12:59:19,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:59:19,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 12:59:19,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:59:20,069 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 12:59:20,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:59:20,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:59:20,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928360385] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 12:59:20,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 12:59:20,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 8] total 20 [2022-01-18 12:59:20,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749691981] [2022-01-18 12:59:20,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:59:20,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 12:59:20,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:59:20,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 12:59:20,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-01-18 12:59:20,319 INFO L87 Difference]: Start difference. First operand 5443 states and 23400 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:59:20,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:59:20,539 INFO L93 Difference]: Finished difference Result 13827 states and 58858 transitions. [2022-01-18 12:59:20,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 12:59:20,540 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2022-01-18 12:59:20,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:59:20,605 INFO L225 Difference]: With dead ends: 13827 [2022-01-18 12:59:20,606 INFO L226 Difference]: Without dead ends: 13827 [2022-01-18 12:59:20,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=140, Invalid=562, Unknown=0, NotChecked=0, Total=702 [2022-01-18 12:59:20,607 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 567 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:59:20,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [567 Valid, 406 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 12:59:20,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13827 states. [2022-01-18 12:59:20,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13827 to 6328. [2022-01-18 12:59:20,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 4.34392287023866) internal successors, (27484), 6327 states have internal predecessors, (27484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:59:20,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 27484 transitions. [2022-01-18 12:59:20,896 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 27484 transitions. Word has length 100 [2022-01-18 12:59:20,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:59:20,896 INFO L470 AbstractCegarLoop]: Abstraction has 6328 states and 27484 transitions. [2022-01-18 12:59:20,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:59:20,896 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 27484 transitions. [2022-01-18 12:59:20,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-18 12:59:20,914 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:59:20,914 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, 1, 1, 1, 1, 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 12:59:20,933 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 12:59:21,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:59:21,133 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 12:59:21,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:59:21,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1176334216, now seen corresponding path program 2 times [2022-01-18 12:59:21,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:59:21,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083953076] [2022-01-18 12:59:21,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:59:21,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:59:21,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:59:21,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:59:21,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:59:21,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083953076] [2022-01-18 12:59:21,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083953076] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:59:21,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:59:21,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 12:59:21,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117652634] [2022-01-18 12:59:21,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:59:21,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 12:59:21,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:59:21,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 12:59:21,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-18 12:59:21,248 INFO L87 Difference]: Start difference. First operand 6328 states and 27484 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:59:21,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:59:21,493 INFO L93 Difference]: Finished difference Result 10542 states and 45765 transitions. [2022-01-18 12:59:21,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 12:59:21,493 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2022-01-18 12:59:21,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:59:21,533 INFO L225 Difference]: With dead ends: 10542 [2022-01-18 12:59:21,534 INFO L226 Difference]: Without dead ends: 10152 [2022-01-18 12:59:21,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-01-18 12:59:21,534 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 335 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:59:21,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [335 Valid, 482 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 12:59:21,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10152 states. [2022-01-18 12:59:21,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10152 to 5938. [2022-01-18 12:59:21,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5938 states, 5937 states have (on average 4.3518612093649995) internal successors, (25837), 5937 states have internal predecessors, (25837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:59:21,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5938 states to 5938 states and 25837 transitions. [2022-01-18 12:59:21,771 INFO L78 Accepts]: Start accepts. Automaton has 5938 states and 25837 transitions. Word has length 100 [2022-01-18 12:59:21,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:59:21,772 INFO L470 AbstractCegarLoop]: Abstraction has 5938 states and 25837 transitions. [2022-01-18 12:59:21,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:59:21,772 INFO L276 IsEmpty]: Start isEmpty. Operand 5938 states and 25837 transitions. [2022-01-18 12:59:21,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-18 12:59:21,791 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:59:21,791 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, 1, 1, 1, 1, 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 12:59:21,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 12:59:21,791 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 12:59:21,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:59:21,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1097611240, now seen corresponding path program 2 times [2022-01-18 12:59:21,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:59:21,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727556622] [2022-01-18 12:59:21,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:59:21,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:59:21,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:59:21,929 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 12:59:21,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:59:21,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727556622] [2022-01-18 12:59:21,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727556622] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:59:21,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602685204] [2022-01-18 12:59:21,930 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:59:21,930 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:59:21,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:59:21,931 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 12:59:21,935 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 12:59:22,016 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:59:22,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:59:22,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 12:59:22,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:59:22,460 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 12:59:22,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:59:22,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:59:22,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602685204] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 12:59:22,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 12:59:22,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 8] total 20 [2022-01-18 12:59:22,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776342428] [2022-01-18 12:59:22,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:59:22,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 12:59:22,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:59:22,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 12:59:22,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2022-01-18 12:59:22,736 INFO L87 Difference]: Start difference. First operand 5938 states and 25837 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:59:22,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:59:22,918 INFO L93 Difference]: Finished difference Result 9243 states and 39941 transitions. [2022-01-18 12:59:22,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 12:59:22,920 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2022-01-18 12:59:22,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:59:22,949 INFO L225 Difference]: With dead ends: 9243 [2022-01-18 12:59:22,949 INFO L226 Difference]: Without dead ends: 9243 [2022-01-18 12:59:22,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2022-01-18 12:59:22,952 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 298 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:59:22,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 605 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 12:59:22,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9243 states. [2022-01-18 12:59:23,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9243 to 6252. [2022-01-18 12:59:23,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6252 states, 6251 states have (on average 4.363781794912814) internal successors, (27278), 6251 states have internal predecessors, (27278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:59:23,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6252 states to 6252 states and 27278 transitions. [2022-01-18 12:59:23,123 INFO L78 Accepts]: Start accepts. Automaton has 6252 states and 27278 transitions. Word has length 100 [2022-01-18 12:59:23,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:59:23,123 INFO L470 AbstractCegarLoop]: Abstraction has 6252 states and 27278 transitions. [2022-01-18 12:59:23,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:59:23,124 INFO L276 IsEmpty]: Start isEmpty. Operand 6252 states and 27278 transitions. [2022-01-18 12:59:23,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-18 12:59:23,142 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:59:23,142 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, 1, 1, 1, 1, 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 12:59:23,160 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 12:59:23,355 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,SelfDestructingSolverStorable5 [2022-01-18 12:59:23,356 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 12:59:23,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:59:23,356 INFO L85 PathProgramCache]: Analyzing trace with hash 714430562, now seen corresponding path program 3 times [2022-01-18 12:59:23,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:59:23,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699589864] [2022-01-18 12:59:23,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:59:23,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:59:23,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:59:23,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:59:23,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:59:23,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699589864] [2022-01-18 12:59:23,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699589864] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:59:23,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:59:23,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 12:59:23,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71831658] [2022-01-18 12:59:23,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:59:23,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 12:59:23,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:59:23,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 12:59:23,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-18 12:59:23,480 INFO L87 Difference]: Start difference. First operand 6252 states and 27278 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:59:23,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:59:23,684 INFO L93 Difference]: Finished difference Result 7454 states and 32257 transitions. [2022-01-18 12:59:23,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 12:59:23,685 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2022-01-18 12:59:23,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:59:23,706 INFO L225 Difference]: With dead ends: 7454 [2022-01-18 12:59:23,706 INFO L226 Difference]: Without dead ends: 6926 [2022-01-18 12:59:23,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-01-18 12:59:23,707 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 258 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:59:23,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 364 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 12:59:23,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6926 states. [2022-01-18 12:59:23,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6926 to 5886. [2022-01-18 12:59:23,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5886 states, 5885 states have (on average 4.357349192863212) internal successors, (25643), 5885 states have internal predecessors, (25643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:59:23,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5886 states to 5886 states and 25643 transitions. [2022-01-18 12:59:23,839 INFO L78 Accepts]: Start accepts. Automaton has 5886 states and 25643 transitions. Word has length 100 [2022-01-18 12:59:23,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:59:23,839 INFO L470 AbstractCegarLoop]: Abstraction has 5886 states and 25643 transitions. [2022-01-18 12:59:23,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:59:23,840 INFO L276 IsEmpty]: Start isEmpty. Operand 5886 states and 25643 transitions. [2022-01-18 12:59:23,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-18 12:59:23,853 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:59:23,853 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, 1, 1, 1, 1, 1, 1, 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 12:59:23,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-18 12:59:23,854 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 12:59:23,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:59:23,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1717384526, now seen corresponding path program 1 times [2022-01-18 12:59:23,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:59:23,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314484069] [2022-01-18 12:59:23,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:59:23,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:59:23,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:59:23,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:59:23,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:59:23,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314484069] [2022-01-18 12:59:23,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314484069] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:59:23,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110081137] [2022-01-18 12:59:23,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:59:23,961 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:59:23,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:59:23,962 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 12:59:23,963 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 12:59:24,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:59:24,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 12:59:24,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:59:24,175 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 12:59:24,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:59:24,302 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 12:59:24,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110081137] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:59:24,303 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:59:24,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 13 [2022-01-18 12:59:24,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769750375] [2022-01-18 12:59:24,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:59:24,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 12:59:24,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:59:24,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 12:59:24,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-01-18 12:59:24,304 INFO L87 Difference]: Start difference. First operand 5886 states and 25643 transitions. Second operand has 13 states, 13 states have (on average 14.923076923076923) internal successors, (194), 13 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:59:24,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:59:24,737 INFO L93 Difference]: Finished difference Result 23775 states and 103391 transitions. [2022-01-18 12:59:24,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-18 12:59:24,737 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 14.923076923076923) internal successors, (194), 13 states have internal predecessors, (194), 0 states have call successors, (0), 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 102 [2022-01-18 12:59:24,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:59:24,811 INFO L225 Difference]: With dead ends: 23775 [2022-01-18 12:59:24,811 INFO L226 Difference]: Without dead ends: 21393 [2022-01-18 12:59:24,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 197 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2022-01-18 12:59:24,812 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 432 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 1310 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 12:59:24,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [432 Valid, 1310 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 12:59:24,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21393 states. [2022-01-18 12:59:25,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21393 to 12696. [2022-01-18 12:59:25,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12696 states, 12695 states have (on average 4.422764868058291) internal successors, (56147), 12695 states have internal predecessors, (56147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:59:25,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12696 states to 12696 states and 56147 transitions. [2022-01-18 12:59:25,269 INFO L78 Accepts]: Start accepts. Automaton has 12696 states and 56147 transitions. Word has length 102 [2022-01-18 12:59:25,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:59:25,270 INFO L470 AbstractCegarLoop]: Abstraction has 12696 states and 56147 transitions. [2022-01-18 12:59:25,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.923076923076923) internal successors, (194), 13 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:59:25,270 INFO L276 IsEmpty]: Start isEmpty. Operand 12696 states and 56147 transitions. [2022-01-18 12:59:25,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-18 12:59:25,302 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:59:25,302 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:59:25,319 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 12:59:25,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:59:25,510 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 12:59:25,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:59:25,510 INFO L85 PathProgramCache]: Analyzing trace with hash 631182096, now seen corresponding path program 1 times [2022-01-18 12:59:25,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:59:25,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82094592] [2022-01-18 12:59:25,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:59:25,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:59:25,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:59:25,634 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:59:25,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:59:25,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82094592] [2022-01-18 12:59:25,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82094592] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:59:25,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183312019] [2022-01-18 12:59:25,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:59:25,635 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:59:25,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:59:25,636 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 12:59:25,637 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 12:59:25,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:59:25,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 12:59:25,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:59:26,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:59:26,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:59:26,261 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:59:26,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183312019] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 12:59:26,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 12:59:26,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 8] total 20 [2022-01-18 12:59:26,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608981978] [2022-01-18 12:59:26,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:59:26,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 12:59:26,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:59:26,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 12:59:26,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2022-01-18 12:59:26,263 INFO L87 Difference]: Start difference. First operand 12696 states and 56147 transitions. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:59:26,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:59:26,564 INFO L93 Difference]: Finished difference Result 25239 states and 111550 transitions. [2022-01-18 12:59:26,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 12:59:26,564 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2022-01-18 12:59:26,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:59:26,797 INFO L225 Difference]: With dead ends: 25239 [2022-01-18 12:59:26,797 INFO L226 Difference]: Without dead ends: 24831 [2022-01-18 12:59:26,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=174, Invalid=528, Unknown=0, NotChecked=0, Total=702 [2022-01-18 12:59:26,800 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 519 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:59:26,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [519 Valid, 372 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 12:59:26,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24831 states. [2022-01-18 12:59:27,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24831 to 14571. [2022-01-18 12:59:27,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14571 states, 14570 states have (on average 4.482292381606039) internal successors, (65307), 14570 states have internal predecessors, (65307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:59:27,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14571 states to 14571 states and 65307 transitions. [2022-01-18 12:59:27,239 INFO L78 Accepts]: Start accepts. Automaton has 14571 states and 65307 transitions. Word has length 104 [2022-01-18 12:59:27,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:59:27,239 INFO L470 AbstractCegarLoop]: Abstraction has 14571 states and 65307 transitions. [2022-01-18 12:59:27,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:59:27,240 INFO L276 IsEmpty]: Start isEmpty. Operand 14571 states and 65307 transitions. [2022-01-18 12:59:27,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-18 12:59:27,274 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:59:27,274 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:59:27,293 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 12:59:27,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:59:27,481 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 12:59:27,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:59:27,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1717204, now seen corresponding path program 2 times [2022-01-18 12:59:27,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:59:27,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576652863] [2022-01-18 12:59:27,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:59:27,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:59:27,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:59:27,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:59:27,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:59:27,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576652863] [2022-01-18 12:59:27,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576652863] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:59:27,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:59:27,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 12:59:27,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497073489] [2022-01-18 12:59:27,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:59:27,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 12:59:27,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:59:27,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 12:59:27,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-18 12:59:27,587 INFO L87 Difference]: Start difference. First operand 14571 states and 65307 transitions. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:59:27,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:59:27,896 INFO L93 Difference]: Finished difference Result 18733 states and 83223 transitions. [2022-01-18 12:59:27,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 12:59:27,897 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2022-01-18 12:59:27,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:59:27,959 INFO L225 Difference]: With dead ends: 18733 [2022-01-18 12:59:27,959 INFO L226 Difference]: Without dead ends: 18037 [2022-01-18 12:59:27,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-01-18 12:59:27,959 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 226 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:59:27,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 434 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 12:59:27,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18037 states. [2022-01-18 12:59:28,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18037 to 14247. [2022-01-18 12:59:28,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14247 states, 14246 states have (on average 4.471500772146568) internal successors, (63701), 14246 states have internal predecessors, (63701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:59:28,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14247 states to 14247 states and 63701 transitions. [2022-01-18 12:59:28,319 INFO L78 Accepts]: Start accepts. Automaton has 14247 states and 63701 transitions. Word has length 104 [2022-01-18 12:59:28,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:59:28,319 INFO L470 AbstractCegarLoop]: Abstraction has 14247 states and 63701 transitions. [2022-01-18 12:59:28,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:59:28,320 INFO L276 IsEmpty]: Start isEmpty. Operand 14247 states and 63701 transitions. [2022-01-18 12:59:28,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-18 12:59:28,426 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:59:28,426 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:59:28,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-18 12:59:28,427 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 12:59:28,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:59:28,427 INFO L85 PathProgramCache]: Analyzing trace with hash -317761718, now seen corresponding path program 1 times [2022-01-18 12:59:28,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:59:28,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162199459] [2022-01-18 12:59:28,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:59:28,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:59:28,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:59:28,513 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:59:28,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:59:28,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162199459] [2022-01-18 12:59:28,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162199459] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:59:28,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756111951] [2022-01-18 12:59:28,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:59:28,514 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:59:28,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:59:28,514 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 12:59:28,515 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 12:59:28,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:59:28,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 12:59:28,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:59:28,789 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:59:28,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:59:28,977 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:59:28,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756111951] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:59:28,978 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:59:28,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2022-01-18 12:59:28,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182450561] [2022-01-18 12:59:28,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:59:28,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 12:59:28,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:59:28,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 12:59:28,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-18 12:59:28,981 INFO L87 Difference]: Start difference. First operand 14247 states and 63701 transitions. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:59:29,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:59:29,282 INFO L93 Difference]: Finished difference Result 35267 states and 155710 transitions. [2022-01-18 12:59:29,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 12:59:29,282 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-01-18 12:59:29,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:59:29,418 INFO L225 Difference]: With dead ends: 35267 [2022-01-18 12:59:29,418 INFO L226 Difference]: Without dead ends: 31907 [2022-01-18 12:59:29,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 209 SyntacticMatches, 5 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-18 12:59:29,419 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 114 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:59:29,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 913 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 12:59:29,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31907 states. [2022-01-18 12:59:29,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31907 to 19578. [2022-01-18 12:59:29,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19578 states, 19577 states have (on average 4.50319252183685) internal successors, (88159), 19577 states have internal predecessors, (88159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:59:30,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19578 states to 19578 states and 88159 transitions. [2022-01-18 12:59:30,047 INFO L78 Accepts]: Start accepts. Automaton has 19578 states and 88159 transitions. Word has length 106 [2022-01-18 12:59:30,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:59:30,047 INFO L470 AbstractCegarLoop]: Abstraction has 19578 states and 88159 transitions. [2022-01-18 12:59:30,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:59:30,047 INFO L276 IsEmpty]: Start isEmpty. Operand 19578 states and 88159 transitions. [2022-01-18 12:59:30,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-18 12:59:30,088 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:59:30,088 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:59:30,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-18 12:59:30,295 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,SelfDestructingSolverStorable10 [2022-01-18 12:59:30,296 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 12:59:30,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:59:30,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1065446786, now seen corresponding path program 2 times [2022-01-18 12:59:30,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:59:30,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35055580] [2022-01-18 12:59:30,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:59:30,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:59:30,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:59:30,398 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:59:30,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:59:30,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35055580] [2022-01-18 12:59:30,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35055580] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:59:30,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771914222] [2022-01-18 12:59:30,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:59:30,399 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:59:30,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:59:30,400 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 12:59:30,401 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 12:59:30,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:59:30,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:59:30,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 12:59:30,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:59:31,028 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:59:31,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:59:31,325 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:59:31,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771914222] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:59:31,325 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:59:31,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2022-01-18 12:59:31,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978561843] [2022-01-18 12:59:31,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:59:31,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 12:59:31,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:59:31,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 12:59:31,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2022-01-18 12:59:31,327 INFO L87 Difference]: Start difference. First operand 19578 states and 88159 transitions. Second operand has 25 states, 25 states have (on average 10.48) internal successors, (262), 25 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:59:33,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:59:33,747 INFO L93 Difference]: Finished difference Result 80099 states and 357825 transitions. [2022-01-18 12:59:33,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-18 12:59:33,747 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 10.48) internal successors, (262), 25 states have internal predecessors, (262), 0 states have call successors, (0), 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 108 [2022-01-18 12:59:33,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:59:34,104 INFO L225 Difference]: With dead ends: 80099 [2022-01-18 12:59:34,104 INFO L226 Difference]: Without dead ends: 74822 [2022-01-18 12:59:34,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1951 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1225, Invalid=5255, Unknown=0, NotChecked=0, Total=6480 [2022-01-18 12:59:34,106 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 1956 mSDsluCounter, 2880 mSDsCounter, 0 mSdLazyCounter, 1204 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1956 SdHoareTripleChecker+Valid, 2721 SdHoareTripleChecker+Invalid, 1343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:59:34,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1956 Valid, 2721 Invalid, 1343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1204 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 12:59:34,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74822 states. [2022-01-18 12:59:35,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74822 to 37534. [2022-01-18 12:59:35,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37534 states, 37533 states have (on average 4.614419311006315) internal successors, (173193), 37533 states have internal predecessors, (173193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:59:35,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37534 states to 37534 states and 173193 transitions. [2022-01-18 12:59:35,788 INFO L78 Accepts]: Start accepts. Automaton has 37534 states and 173193 transitions. Word has length 108 [2022-01-18 12:59:35,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:59:35,788 INFO L470 AbstractCegarLoop]: Abstraction has 37534 states and 173193 transitions. [2022-01-18 12:59:35,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.48) internal successors, (262), 25 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:59:35,788 INFO L276 IsEmpty]: Start isEmpty. Operand 37534 states and 173193 transitions. [2022-01-18 12:59:35,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-18 12:59:35,882 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:59:35,883 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:59:35,902 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 12:59:36,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:59:36,100 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 12:59:36,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:59:36,100 INFO L85 PathProgramCache]: Analyzing trace with hash -492042434, now seen corresponding path program 3 times [2022-01-18 12:59:36,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:59:36,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363404599] [2022-01-18 12:59:36,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:59:36,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:59:36,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:59:36,424 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 12:59:36,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:59:36,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363404599] [2022-01-18 12:59:36,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363404599] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:59:36,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325849860] [2022-01-18 12:59:36,425 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:59:36,425 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:59:36,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:59:36,426 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 12:59:36,427 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 12:59:36,513 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 12:59:36,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:59:36,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 12:59:36,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:59:36,861 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:59:36,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:59:37,110 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:59:37,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325849860] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:59:37,110 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:59:37,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2022-01-18 12:59:37,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440480374] [2022-01-18 12:59:37,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:59:37,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 12:59:37,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:59:37,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 12:59:37,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2022-01-18 12:59:37,112 INFO L87 Difference]: Start difference. First operand 37534 states and 173193 transitions. Second operand has 25 states, 25 states have (on average 9.96) internal successors, (249), 25 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:59:40,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:59:40,307 INFO L93 Difference]: Finished difference Result 176095 states and 790765 transitions. [2022-01-18 12:59:40,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-01-18 12:59:40,307 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 9.96) internal successors, (249), 25 states have internal predecessors, (249), 0 states have call successors, (0), 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 108 [2022-01-18 12:59:40,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:59:41,439 INFO L225 Difference]: With dead ends: 176095 [2022-01-18 12:59:41,439 INFO L226 Difference]: Without dead ends: 172120 [2022-01-18 12:59:41,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2457 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1375, Invalid=6281, Unknown=0, NotChecked=0, Total=7656 [2022-01-18 12:59:41,441 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 2386 mSDsluCounter, 3020 mSDsCounter, 0 mSdLazyCounter, 1176 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2386 SdHoareTripleChecker+Valid, 2809 SdHoareTripleChecker+Invalid, 1356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 1176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:59:41,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2386 Valid, 2809 Invalid, 1356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 1176 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 12:59:41,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172120 states. [2022-01-18 12:59:44,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172120 to 73084. [2022-01-18 12:59:44,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73084 states, 73083 states have (on average 4.775187116018773) internal successors, (348985), 73083 states have internal predecessors, (348985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:59:45,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73084 states to 73084 states and 348985 transitions. [2022-01-18 12:59:45,009 INFO L78 Accepts]: Start accepts. Automaton has 73084 states and 348985 transitions. Word has length 108 [2022-01-18 12:59:45,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:59:45,009 INFO L470 AbstractCegarLoop]: Abstraction has 73084 states and 348985 transitions. [2022-01-18 12:59:45,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 9.96) internal successors, (249), 25 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:59:45,009 INFO L276 IsEmpty]: Start isEmpty. Operand 73084 states and 348985 transitions. [2022-01-18 12:59:45,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-18 12:59:45,197 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:59:45,197 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:59:45,212 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-01-18 12:59:45,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:59:45,398 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 12:59:45,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:59:45,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1960919418, now seen corresponding path program 4 times [2022-01-18 12:59:45,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:59:45,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890904427] [2022-01-18 12:59:45,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:59:45,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:59:45,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:59:45,879 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:59:45,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:59:45,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890904427] [2022-01-18 12:59:45,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890904427] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:59:45,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69763457] [2022-01-18 12:59:45,879 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:59:45,879 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:59:45,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:59:45,880 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 12:59:45,881 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 12:59:45,938 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:59:45,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:59:45,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 12:59:45,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:59:46,385 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 12:59:46,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:59:46,706 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 12:59:46,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69763457] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:59:46,707 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:59:46,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2022-01-18 12:59:46,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509318603] [2022-01-18 12:59:46,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:59:46,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 12:59:46,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:59:46,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 12:59:46,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2022-01-18 12:59:46,709 INFO L87 Difference]: Start difference. First operand 73084 states and 348985 transitions. Second operand has 25 states, 25 states have (on average 10.92) internal successors, (273), 25 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:59:50,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:59:50,242 INFO L93 Difference]: Finished difference Result 203214 states and 928615 transitions. [2022-01-18 12:59:50,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-01-18 12:59:50,242 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 10.92) internal successors, (273), 25 states have internal predecessors, (273), 0 states have call successors, (0), 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 108 [2022-01-18 12:59:50,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:59:51,715 INFO L225 Difference]: With dead ends: 203214 [2022-01-18 12:59:51,716 INFO L226 Difference]: Without dead ends: 197376 [2022-01-18 12:59:51,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2440 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1445, Invalid=6037, Unknown=0, NotChecked=0, Total=7482 [2022-01-18 12:59:51,717 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 2574 mSDsluCounter, 2762 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2574 SdHoareTripleChecker+Valid, 2589 SdHoareTripleChecker+Invalid, 1344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 12:59:51,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2574 Valid, 2589 Invalid, 1344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 1134 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 12:59:51,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197376 states. [2022-01-18 12:59:55,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197376 to 96950. [2022-01-18 12:59:55,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96950 states, 96949 states have (on average 4.853046447101053) internal successors, (470498), 96949 states have internal predecessors, (470498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:59:56,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96950 states to 96950 states and 470498 transitions. [2022-01-18 12:59:56,483 INFO L78 Accepts]: Start accepts. Automaton has 96950 states and 470498 transitions. Word has length 108 [2022-01-18 12:59:56,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:59:56,483 INFO L470 AbstractCegarLoop]: Abstraction has 96950 states and 470498 transitions. [2022-01-18 12:59:56,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.92) internal successors, (273), 25 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:59:56,484 INFO L276 IsEmpty]: Start isEmpty. Operand 96950 states and 470498 transitions. [2022-01-18 12:59:56,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-18 12:59:56,767 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:59:56,767 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:59:56,783 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 12:59:56,967 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,SelfDestructingSolverStorable13 [2022-01-18 12:59:56,968 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 12:59:56,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:59:56,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1766060490, now seen corresponding path program 5 times [2022-01-18 12:59:56,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:59:56,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580302837] [2022-01-18 12:59:56,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:59:56,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:59:56,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:59:57,090 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:59:57,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:59:57,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580302837] [2022-01-18 12:59:57,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580302837] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:59:57,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331285470] [2022-01-18 12:59:57,091 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:59:57,091 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:59:57,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:59:57,092 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 12:59:57,093 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 12:59:57,167 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 12:59:57,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:59:57,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 12:59:57,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:59:58,083 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:59:58,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:59:58,339 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:59:58,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331285470] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:59:58,339 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:59:58,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 24 [2022-01-18 12:59:58,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813841321] [2022-01-18 12:59:58,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:59:58,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 12:59:58,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:59:58,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 12:59:58,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2022-01-18 12:59:58,341 INFO L87 Difference]: Start difference. First operand 96950 states and 470498 transitions. Second operand has 24 states, 24 states have (on average 9.833333333333334) internal successors, (236), 24 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:00:00,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:00:00,342 INFO L93 Difference]: Finished difference Result 186048 states and 877202 transitions. [2022-01-18 13:00:00,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 13:00:00,343 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 9.833333333333334) internal successors, (236), 24 states have internal predecessors, (236), 0 states have call successors, (0), 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 108 [2022-01-18 13:00:00,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:00:01,738 INFO L225 Difference]: With dead ends: 186048 [2022-01-18 13:00:01,738 INFO L226 Difference]: Without dead ends: 176790 [2022-01-18 13:00:01,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 201 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=285, Invalid=975, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 13:00:01,739 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 1120 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 1501 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 13:00:01,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1120 Valid, 1501 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 13:00:01,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176790 states. [2022-01-18 13:00:05,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176790 to 121317. [2022-01-18 13:00:05,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121317 states, 121316 states have (on average 4.9460170134195) internal successors, (600031), 121316 states have internal predecessors, (600031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:00:07,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121317 states to 121317 states and 600031 transitions. [2022-01-18 13:00:07,051 INFO L78 Accepts]: Start accepts. Automaton has 121317 states and 600031 transitions. Word has length 108 [2022-01-18 13:00:07,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:00:07,051 INFO L470 AbstractCegarLoop]: Abstraction has 121317 states and 600031 transitions. [2022-01-18 13:00:07,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 9.833333333333334) internal successors, (236), 24 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:00:07,052 INFO L276 IsEmpty]: Start isEmpty. Operand 121317 states and 600031 transitions. [2022-01-18 13:00:07,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-18 13:00:07,435 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:00:07,435 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:00:07,453 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 13:00:07,636 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,SelfDestructingSolverStorable14 [2022-01-18 13:00:07,638 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 13:00:07,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:00:07,638 INFO L85 PathProgramCache]: Analyzing trace with hash 529963872, now seen corresponding path program 6 times [2022-01-18 13:00:07,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:00:07,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34277974] [2022-01-18 13:00:07,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:00:07,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:00:07,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:00:07,776 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:00:07,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:00:07,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34277974] [2022-01-18 13:00:07,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34277974] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:00:07,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877600613] [2022-01-18 13:00:07,777 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 13:00:07,777 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:00:07,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:00:07,778 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 13:00:07,786 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 13:00:07,861 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 13:00:07,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:00:07,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 13:00:07,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:00:08,285 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:00:08,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:00:08,608 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:00:08,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877600613] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:00:08,608 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:00:08,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2022-01-18 13:00:08,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655682212] [2022-01-18 13:00:08,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:00:08,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 13:00:08,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:00:08,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 13:00:08,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2022-01-18 13:00:08,609 INFO L87 Difference]: Start difference. First operand 121317 states and 600031 transitions. Second operand has 25 states, 25 states have (on average 10.08) internal successors, (252), 25 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:00:14,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:00:14,014 INFO L93 Difference]: Finished difference Result 277582 states and 1317801 transitions. [2022-01-18 13:00:14,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-01-18 13:00:14,014 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 10.08) internal successors, (252), 25 states have internal predecessors, (252), 0 states have call successors, (0), 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 108 [2022-01-18 13:00:14,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:00:16,272 INFO L225 Difference]: With dead ends: 277582 [2022-01-18 13:00:16,272 INFO L226 Difference]: Without dead ends: 273502 [2022-01-18 13:00:16,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3388 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1875, Invalid=8025, Unknown=0, NotChecked=0, Total=9900 [2022-01-18 13:00:16,274 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 1997 mSDsluCounter, 2874 mSDsCounter, 0 mSdLazyCounter, 1267 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1997 SdHoareTripleChecker+Valid, 2666 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:00:16,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1997 Valid, 2666 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1267 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 13:00:16,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273502 states. [2022-01-18 13:00:21,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273502 to 123123. [2022-01-18 13:00:21,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123123 states, 123122 states have (on average 4.942975260310911) internal successors, (608589), 123122 states have internal predecessors, (608589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:00:22,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123123 states to 123123 states and 608589 transitions. [2022-01-18 13:00:22,550 INFO L78 Accepts]: Start accepts. Automaton has 123123 states and 608589 transitions. Word has length 108 [2022-01-18 13:00:22,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:00:22,550 INFO L470 AbstractCegarLoop]: Abstraction has 123123 states and 608589 transitions. [2022-01-18 13:00:22,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.08) internal successors, (252), 25 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:00:22,551 INFO L276 IsEmpty]: Start isEmpty. Operand 123123 states and 608589 transitions. [2022-01-18 13:00:23,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-18 13:00:23,457 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:00:23,457 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:00:23,473 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 13:00:23,667 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,SelfDestructingSolverStorable15 [2022-01-18 13:00:23,667 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 13:00:23,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:00:23,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1396475958, now seen corresponding path program 7 times [2022-01-18 13:00:23,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:00:23,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490166759] [2022-01-18 13:00:23,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:00:23,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:00:23,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:00:23,773 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:00:23,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:00:23,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490166759] [2022-01-18 13:00:23,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490166759] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:00:23,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868062084] [2022-01-18 13:00:23,773 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 13:00:23,774 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:00:23,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:00:23,775 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 13:00:23,775 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 13:00:23,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:00:23,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 13:00:23,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:00:24,256 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:00:24,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:00:24,546 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:00:24,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868062084] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:00:24,547 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:00:24,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2022-01-18 13:00:24,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542797509] [2022-01-18 13:00:24,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:00:24,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 13:00:24,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:00:24,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 13:00:24,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2022-01-18 13:00:24,548 INFO L87 Difference]: Start difference. First operand 123123 states and 608589 transitions. Second operand has 25 states, 25 states have (on average 10.92) internal successors, (273), 25 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:00:28,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:00:28,445 INFO L93 Difference]: Finished difference Result 257612 states and 1239734 transitions. [2022-01-18 13:00:28,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 13:00:28,445 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 10.92) internal successors, (273), 25 states have internal predecessors, (273), 0 states have call successors, (0), 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 108 [2022-01-18 13:00:28,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:00:30,460 INFO L225 Difference]: With dead ends: 257612 [2022-01-18 13:00:30,460 INFO L226 Difference]: Without dead ends: 253502 [2022-01-18 13:00:30,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1242 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=959, Invalid=3597, Unknown=0, NotChecked=0, Total=4556 [2022-01-18 13:00:30,461 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 2251 mSDsluCounter, 3050 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2251 SdHoareTripleChecker+Valid, 2859 SdHoareTripleChecker+Invalid, 1340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:00:30,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2251 Valid, 2859 Invalid, 1340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1217 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:00:30,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253502 states. [2022-01-18 13:00:35,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253502 to 140835. [2022-01-18 13:00:35,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140835 states, 140834 states have (on average 5.010146697530426) internal successors, (705599), 140834 states have internal predecessors, (705599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:00:36,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140835 states to 140835 states and 705599 transitions. [2022-01-18 13:00:36,990 INFO L78 Accepts]: Start accepts. Automaton has 140835 states and 705599 transitions. Word has length 108 [2022-01-18 13:00:36,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:00:36,990 INFO L470 AbstractCegarLoop]: Abstraction has 140835 states and 705599 transitions. [2022-01-18 13:00:36,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.92) internal successors, (273), 25 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:00:36,990 INFO L276 IsEmpty]: Start isEmpty. Operand 140835 states and 705599 transitions. [2022-01-18 13:00:37,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-18 13:00:37,463 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:00:37,463 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:00:37,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-18 13:00:37,663 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,SelfDestructingSolverStorable16 [2022-01-18 13:00:37,664 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 13:00:37,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:00:37,664 INFO L85 PathProgramCache]: Analyzing trace with hash 417768926, now seen corresponding path program 8 times [2022-01-18 13:00:37,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:00:37,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640751570] [2022-01-18 13:00:37,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:00:37,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:00:37,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:00:38,351 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:00:38,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:00:38,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640751570] [2022-01-18 13:00:38,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640751570] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:00:38,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87224571] [2022-01-18 13:00:38,351 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:00:38,351 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:00:38,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:00:38,352 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 13:00:38,353 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 13:00:38,432 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:00:38,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:00:38,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 13:00:38,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:00:38,844 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:00:38,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:00:39,137 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:00:39,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87224571] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:00:39,138 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:00:39,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 24 [2022-01-18 13:00:39,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397204862] [2022-01-18 13:00:39,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:00:39,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 13:00:39,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:00:39,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 13:00:39,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2022-01-18 13:00:39,139 INFO L87 Difference]: Start difference. First operand 140835 states and 705599 transitions. Second operand has 24 states, 24 states have (on average 10.333333333333334) internal successors, (248), 24 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:00:42,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:00:42,418 INFO L93 Difference]: Finished difference Result 260987 states and 1252612 transitions. [2022-01-18 13:00:42,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 13:00:42,419 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 10.333333333333334) internal successors, (248), 24 states have internal predecessors, (248), 0 states have call successors, (0), 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 108 [2022-01-18 13:00:42,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:00:44,892 INFO L225 Difference]: With dead ends: 260987 [2022-01-18 13:00:44,892 INFO L226 Difference]: Without dead ends: 252641 [2022-01-18 13:00:44,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 201 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=334, Invalid=1072, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 13:00:44,893 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 754 mSDsluCounter, 2418 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 2234 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:00:44,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [754 Valid, 2234 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 13:00:45,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252641 states. [2022-01-18 13:00:51,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252641 to 164457. [2022-01-18 13:00:51,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164457 states, 164456 states have (on average 5.046067033127402) internal successors, (829856), 164456 states have internal predecessors, (829856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:00:52,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164457 states to 164457 states and 829856 transitions. [2022-01-18 13:00:52,898 INFO L78 Accepts]: Start accepts. Automaton has 164457 states and 829856 transitions. Word has length 108 [2022-01-18 13:00:52,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:00:52,898 INFO L470 AbstractCegarLoop]: Abstraction has 164457 states and 829856 transitions. [2022-01-18 13:00:52,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 10.333333333333334) internal successors, (248), 24 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:00:52,898 INFO L276 IsEmpty]: Start isEmpty. Operand 164457 states and 829856 transitions. [2022-01-18 13:00:53,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-18 13:00:53,457 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:00:53,457 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:00:53,472 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 13:00:53,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-01-18 13:00:53,658 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 13:00:53,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:00:53,659 INFO L85 PathProgramCache]: Analyzing trace with hash -610268388, now seen corresponding path program 9 times [2022-01-18 13:00:53,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:00:53,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999787293] [2022-01-18 13:00:53,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:00:53,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:00:53,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:00:53,771 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 13:00:53,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:00:53,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999787293] [2022-01-18 13:00:53,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999787293] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:00:53,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093873748] [2022-01-18 13:00:53,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 13:00:53,772 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:00:53,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:00:53,773 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 13:00:53,774 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 13:00:53,855 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 13:00:53,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:00:53,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 13:00:53,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:00:54,235 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 13:00:54,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:00:54,510 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 13:00:54,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093873748] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:00:54,510 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:00:54,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2022-01-18 13:00:54,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629438040] [2022-01-18 13:00:54,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:00:54,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 13:00:54,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:00:54,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 13:00:54,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2022-01-18 13:00:54,512 INFO L87 Difference]: Start difference. First operand 164457 states and 829856 transitions. Second operand has 25 states, 25 states have (on average 10.52) internal successors, (263), 25 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:01:03,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:01:03,107 INFO L93 Difference]: Finished difference Result 476126 states and 2305580 transitions. [2022-01-18 13:01:03,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2022-01-18 13:01:03,107 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 10.52) internal successors, (263), 25 states have internal predecessors, (263), 0 states have call successors, (0), 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 110 [2022-01-18 13:01:03,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:01:06,825 INFO L225 Difference]: With dead ends: 476126 [2022-01-18 13:01:06,826 INFO L226 Difference]: Without dead ends: 472145 [2022-01-18 13:01:06,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7698 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=3264, Invalid=17328, Unknown=0, NotChecked=0, Total=20592 [2022-01-18 13:01:06,829 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 2461 mSDsluCounter, 3299 mSDsCounter, 0 mSdLazyCounter, 1910 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2461 SdHoareTripleChecker+Valid, 3254 SdHoareTripleChecker+Invalid, 2195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 1910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 13:01:06,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2461 Valid, 3254 Invalid, 2195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 1910 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 13:01:08,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472145 states. [2022-01-18 13:01:16,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472145 to 194117. [2022-01-18 13:01:17,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194117 states, 194116 states have (on average 5.116930083043129) internal successors, (993278), 194116 states have internal predecessors, (993278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:01:18,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194117 states to 194117 states and 993278 transitions. [2022-01-18 13:01:18,862 INFO L78 Accepts]: Start accepts. Automaton has 194117 states and 993278 transitions. Word has length 110 [2022-01-18 13:01:18,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:01:18,862 INFO L470 AbstractCegarLoop]: Abstraction has 194117 states and 993278 transitions. [2022-01-18 13:01:18,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.52) internal successors, (263), 25 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:01:18,862 INFO L276 IsEmpty]: Start isEmpty. Operand 194117 states and 993278 transitions. [2022-01-18 13:01:20,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-18 13:01:20,158 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:01:20,158 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:01:20,174 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 13:01:20,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:01:20,369 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 13:01:20,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:01:20,370 INFO L85 PathProgramCache]: Analyzing trace with hash 2015025136, now seen corresponding path program 10 times [2022-01-18 13:01:20,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:01:20,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453931687] [2022-01-18 13:01:20,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:01:20,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:01:20,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:01:20,478 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 13:01:20,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:01:20,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453931687] [2022-01-18 13:01:20,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453931687] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:01:20,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811211988] [2022-01-18 13:01:20,478 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 13:01:20,478 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:01:20,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:01:20,479 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 13:01:20,480 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 13:01:20,554 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 13:01:20,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:01:20,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 13:01:20,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:01:20,775 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 13:01:20,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:01:20,899 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 13:01:20,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811211988] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:01:20,900 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:01:20,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 16 [2022-01-18 13:01:20,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693892028] [2022-01-18 13:01:20,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:01:20,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 13:01:20,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:01:20,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 13:01:20,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-01-18 13:01:20,901 INFO L87 Difference]: Start difference. First operand 194117 states and 993278 transitions. Second operand has 16 states, 16 states have (on average 13.0625) internal successors, (209), 16 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:01:27,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:01:27,861 INFO L93 Difference]: Finished difference Result 519271 states and 2563770 transitions. [2022-01-18 13:01:27,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 13:01:27,862 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 13.0625) internal successors, (209), 16 states have internal predecessors, (209), 0 states have call successors, (0), 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 110 [2022-01-18 13:01:27,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:01:31,700 INFO L225 Difference]: With dead ends: 519271 [2022-01-18 13:01:31,701 INFO L226 Difference]: Without dead ends: 485029 [2022-01-18 13:01:31,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 213 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=259, Invalid=1903, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 13:01:31,702 INFO L933 BasicCegarLoop]: 426 mSDtfsCounter, 1114 mSDsluCounter, 4915 mSDsCounter, 0 mSdLazyCounter, 1838 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1114 SdHoareTripleChecker+Valid, 4788 SdHoareTripleChecker+Invalid, 1917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:01:31,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1114 Valid, 4788 Invalid, 1917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1838 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:01:32,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485029 states. [2022-01-18 13:01:43,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485029 to 264251. [2022-01-18 13:01:43,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264251 states, 264250 states have (on average 5.152177861873226) internal successors, (1361463), 264250 states have internal predecessors, (1361463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:01:46,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264251 states to 264251 states and 1361463 transitions. [2022-01-18 13:01:46,694 INFO L78 Accepts]: Start accepts. Automaton has 264251 states and 1361463 transitions. Word has length 110 [2022-01-18 13:01:46,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:01:46,694 INFO L470 AbstractCegarLoop]: Abstraction has 264251 states and 1361463 transitions. [2022-01-18 13:01:46,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 13.0625) internal successors, (209), 16 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:01:46,695 INFO L276 IsEmpty]: Start isEmpty. Operand 264251 states and 1361463 transitions. [2022-01-18 13:01:48,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-18 13:01:48,337 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:01:48,338 INFO L514 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:01:48,353 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 13:01:48,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:01:48,552 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 13:01:48,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:01:48,552 INFO L85 PathProgramCache]: Analyzing trace with hash -61964718, now seen corresponding path program 11 times [2022-01-18 13:01:48,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:01:48,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574951292] [2022-01-18 13:01:48,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:01:48,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:01:48,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:01:48,757 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:01:48,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:01:48,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574951292] [2022-01-18 13:01:48,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574951292] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:01:48,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761382507] [2022-01-18 13:01:48,757 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 13:01:48,757 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:01:48,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:01:48,758 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 13:01:48,759 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 13:01:48,884 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 13:01:48,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:01:48,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 13:01:48,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:01:49,385 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:01:49,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:01:49,668 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:01:49,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761382507] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:01:49,668 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:01:49,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 24 [2022-01-18 13:01:49,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460403688] [2022-01-18 13:01:49,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:01:49,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 13:01:49,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:01:49,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 13:01:49,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2022-01-18 13:01:49,670 INFO L87 Difference]: Start difference. First operand 264251 states and 1361463 transitions. Second operand has 24 states, 24 states have (on average 10.875) internal successors, (261), 24 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:01:58,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:01:58,443 INFO L93 Difference]: Finished difference Result 628323 states and 3134801 transitions. [2022-01-18 13:01:58,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-18 13:01:58,443 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 10.875) internal successors, (261), 24 states have internal predecessors, (261), 0 states have call successors, (0), 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 112 [2022-01-18 13:01:58,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:02:03,581 INFO L225 Difference]: With dead ends: 628323 [2022-01-18 13:02:03,581 INFO L226 Difference]: Without dead ends: 621255 [2022-01-18 13:02:03,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 209 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=387, Invalid=1419, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 13:02:03,581 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 1241 mSDsluCounter, 2299 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1241 SdHoareTripleChecker+Valid, 2137 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:02:03,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1241 Valid, 2137 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:02:05,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621255 states. [2022-01-18 13:02:18,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621255 to 299026. [2022-01-18 13:02:19,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299026 states, 299025 states have (on average 5.206832204665162) internal successors, (1556973), 299025 states have internal predecessors, (1556973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:02:21,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299026 states to 299026 states and 1556973 transitions. [2022-01-18 13:02:21,954 INFO L78 Accepts]: Start accepts. Automaton has 299026 states and 1556973 transitions. Word has length 112 [2022-01-18 13:02:21,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:02:21,954 INFO L470 AbstractCegarLoop]: Abstraction has 299026 states and 1556973 transitions. [2022-01-18 13:02:21,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 10.875) internal successors, (261), 24 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:02:21,954 INFO L276 IsEmpty]: Start isEmpty. Operand 299026 states and 1556973 transitions. [2022-01-18 13:02:23,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-18 13:02:23,502 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:02:23,502 INFO L514 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:02:23,520 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 13:02:23,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:02:23,715 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 13:02:23,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:02:23,716 INFO L85 PathProgramCache]: Analyzing trace with hash 253602434, now seen corresponding path program 12 times [2022-01-18 13:02:23,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:02:23,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379566233] [2022-01-18 13:02:23,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:02:23,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:02:23,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:02:23,839 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:02:23,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:02:23,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379566233] [2022-01-18 13:02:23,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379566233] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:02:23,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442920244] [2022-01-18 13:02:23,839 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 13:02:23,839 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:02:23,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:02:23,840 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 13:02:23,841 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 13:02:23,933 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 13:02:23,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:02:23,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 13:02:23,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:02:24,319 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:02:24,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:02:24,606 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:02:24,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442920244] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:02:24,606 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:02:24,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2022-01-18 13:02:24,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039238919] [2022-01-18 13:02:24,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:02:24,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 13:02:24,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:02:24,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 13:02:24,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2022-01-18 13:02:24,608 INFO L87 Difference]: Start difference. First operand 299026 states and 1556973 transitions. Second operand has 25 states, 25 states have (on average 10.0) internal successors, (250), 25 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:02:32,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:02:32,403 INFO L93 Difference]: Finished difference Result 526095 states and 2631886 transitions. [2022-01-18 13:02:32,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-18 13:02:32,403 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 10.0) internal successors, (250), 25 states have internal predecessors, (250), 0 states have call successors, (0), 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 112 [2022-01-18 13:02:32,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:02:36,462 INFO L225 Difference]: With dead ends: 526095 [2022-01-18 13:02:36,463 INFO L226 Difference]: Without dead ends: 520173 [2022-01-18 13:02:36,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1781 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1221, Invalid=4941, Unknown=0, NotChecked=0, Total=6162 [2022-01-18 13:02:36,463 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 2735 mSDsluCounter, 2515 mSDsCounter, 0 mSdLazyCounter, 1260 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2735 SdHoareTripleChecker+Valid, 2411 SdHoareTripleChecker+Invalid, 1481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 1260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:02:36,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2735 Valid, 2411 Invalid, 1481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 1260 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:02:37,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520173 states. [2022-01-18 13:02:49,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520173 to 294557. [2022-01-18 13:02:49,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294557 states, 294556 states have (on average 5.188422574994228) internal successors, (1528281), 294556 states have internal predecessors, (1528281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:02:53,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294557 states to 294557 states and 1528281 transitions. [2022-01-18 13:02:53,614 INFO L78 Accepts]: Start accepts. Automaton has 294557 states and 1528281 transitions. Word has length 112 [2022-01-18 13:02:53,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:02:53,615 INFO L470 AbstractCegarLoop]: Abstraction has 294557 states and 1528281 transitions. [2022-01-18 13:02:53,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.0) internal successors, (250), 25 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:02:53,627 INFO L276 IsEmpty]: Start isEmpty. Operand 294557 states and 1528281 transitions. [2022-01-18 13:02:55,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-18 13:02:55,365 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:02:55,365 INFO L514 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:02:55,384 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 13:02:55,579 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,SelfDestructingSolverStorable21 [2022-01-18 13:02:55,579 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 13:02:55,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:02:55,580 INFO L85 PathProgramCache]: Analyzing trace with hash -873541760, now seen corresponding path program 13 times [2022-01-18 13:02:55,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:02:55,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594796915] [2022-01-18 13:02:55,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:02:55,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:02:55,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:02:55,744 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 13:02:55,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:02:55,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594796915] [2022-01-18 13:02:55,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594796915] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:02:55,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246521261] [2022-01-18 13:02:55,744 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 13:02:55,744 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:02:55,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:02:55,745 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 13:02:55,746 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 13:02:55,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:02:55,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 13:02:55,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:02:56,315 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 13:02:56,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:02:56,650 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 13:02:56,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246521261] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:02:56,650 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:02:56,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 24 [2022-01-18 13:02:56,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612363402] [2022-01-18 13:02:56,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:02:56,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 13:02:56,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:02:56,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 13:02:56,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=424, Unknown=0, NotChecked=0, Total=552 [2022-01-18 13:02:56,652 INFO L87 Difference]: Start difference. First operand 294557 states and 1528281 transitions. Second operand has 24 states, 24 states have (on average 10.541666666666666) internal successors, (253), 24 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:03:02,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:03:02,766 INFO L93 Difference]: Finished difference Result 397998 states and 2033140 transitions. [2022-01-18 13:03:02,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 13:03:02,766 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 10.541666666666666) internal successors, (253), 24 states have internal predecessors, (253), 0 states have call successors, (0), 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 112 [2022-01-18 13:03:02,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:03:07,500 INFO L225 Difference]: With dead ends: 397998 [2022-01-18 13:03:07,500 INFO L226 Difference]: Without dead ends: 392214 [2022-01-18 13:03:07,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 209 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=356, Invalid=1126, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 13:03:07,501 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 1194 mSDsluCounter, 1166 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1194 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:03:07,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1194 Valid, 1157 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:03:08,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392214 states. [2022-01-18 13:03:18,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392214 to 308793. [2022-01-18 13:03:19,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308793 states, 308792 states have (on average 5.227784398559548) internal successors, (1614298), 308792 states have internal predecessors, (1614298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:03:22,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308793 states to 308793 states and 1614298 transitions. [2022-01-18 13:03:22,003 INFO L78 Accepts]: Start accepts. Automaton has 308793 states and 1614298 transitions. Word has length 112 [2022-01-18 13:03:22,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:03:22,003 INFO L470 AbstractCegarLoop]: Abstraction has 308793 states and 1614298 transitions. [2022-01-18 13:03:22,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 10.541666666666666) internal successors, (253), 24 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:03:22,003 INFO L276 IsEmpty]: Start isEmpty. Operand 308793 states and 1614298 transitions. [2022-01-18 13:03:23,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-18 13:03:23,999 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:03:23,999 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:03:24,021 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 13:03:24,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:03:24,207 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 13:03:24,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:03:24,208 INFO L85 PathProgramCache]: Analyzing trace with hash -986652116, now seen corresponding path program 14 times [2022-01-18 13:03:24,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:03:24,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799603133] [2022-01-18 13:03:24,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:03:24,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:03:24,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:03:24,389 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:03:24,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:03:24,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799603133] [2022-01-18 13:03:24,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799603133] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:03:24,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678242490] [2022-01-18 13:03:24,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 13:03:24,390 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:03:24,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:03:24,407 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 13:03:24,443 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 13:03:24,566 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 13:03:24,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:03:24,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 13:03:24,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:03:25,137 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:03:25,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:03:25,566 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:03:25,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678242490] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:03:25,566 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:03:25,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 30 [2022-01-18 13:03:25,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792335740] [2022-01-18 13:03:25,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:03:25,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-18 13:03:25,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:03:25,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-18 13:03:25,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=741, Unknown=0, NotChecked=0, Total=870 [2022-01-18 13:03:25,567 INFO L87 Difference]: Start difference. First operand 308793 states and 1614298 transitions. Second operand has 30 states, 30 states have (on average 9.5) internal successors, (285), 30 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:03:48,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:03:48,567 INFO L93 Difference]: Finished difference Result 1559830 states and 7482173 transitions. [2022-01-18 13:03:48,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-01-18 13:03:48,567 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 9.5) internal successors, (285), 30 states have internal predecessors, (285), 0 states have call successors, (0), 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 112 [2022-01-18 13:03:48,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:04:03,144 INFO L225 Difference]: With dead ends: 1559830 [2022-01-18 13:04:03,144 INFO L226 Difference]: Without dead ends: 1522285 [2022-01-18 13:04:03,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9325 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=4140, Invalid=18210, Unknown=0, NotChecked=0, Total=22350 [2022-01-18 13:04:03,146 INFO L933 BasicCegarLoop]: 295 mSDtfsCounter, 4561 mSDsluCounter, 6079 mSDsCounter, 0 mSdLazyCounter, 2096 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4561 SdHoareTripleChecker+Valid, 5561 SdHoareTripleChecker+Invalid, 2402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 2096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:04:03,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4561 Valid, 5561 Invalid, 2402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 2096 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 13:04:06,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1522285 states. [2022-01-18 13:04:46,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1522285 to 473067. [2022-01-18 13:04:47,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473067 states, 473066 states have (on average 5.339519221419422) internal successors, (2525945), 473066 states have internal predecessors, (2525945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:04:54,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473067 states to 473067 states and 2525945 transitions. [2022-01-18 13:04:54,051 INFO L78 Accepts]: Start accepts. Automaton has 473067 states and 2525945 transitions. Word has length 112 [2022-01-18 13:04:54,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:04:54,052 INFO L470 AbstractCegarLoop]: Abstraction has 473067 states and 2525945 transitions. [2022-01-18 13:04:54,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 9.5) internal successors, (285), 30 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:04:54,052 INFO L276 IsEmpty]: Start isEmpty. Operand 473067 states and 2525945 transitions. [2022-01-18 13:04:57,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-18 13:04:57,667 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:04:57,667 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:04:57,686 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 13:04:57,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:04:57,879 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 13:04:57,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:04:57,880 INFO L85 PathProgramCache]: Analyzing trace with hash 533648838, now seen corresponding path program 15 times [2022-01-18 13:04:57,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:04:57,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660704732] [2022-01-18 13:04:57,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:04:57,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:04:57,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:04:58,017 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:04:58,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:04:58,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660704732] [2022-01-18 13:04:58,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660704732] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 13:04:58,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267669336] [2022-01-18 13:04:58,019 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 13:04:58,019 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 13:04:58,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:04:58,023 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 13:04:58,026 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 13:04:58,148 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 13:04:58,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 13:04:58,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 13:04:58,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 13:04:58,351 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:04:58,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 13:04:58,534 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 13:04:58,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267669336] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 13:04:58,534 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 13:04:58,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2022-01-18 13:04:58,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848155161] [2022-01-18 13:04:58,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 13:04:58,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 13:04:58,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:04:58,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 13:04:58,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-18 13:04:58,535 INFO L87 Difference]: Start difference. First operand 473067 states and 2525945 transitions. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)