/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.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-channel-sum.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 01:47:40,974 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 01:47:40,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 01:47:41,030 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 01:47:41,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 01:47:41,031 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 01:47:41,032 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 01:47:41,033 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 01:47:41,034 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 01:47:41,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 01:47:41,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 01:47:41,035 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 01:47:41,035 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 01:47:41,036 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 01:47:41,036 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 01:47:41,037 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 01:47:41,038 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 01:47:41,042 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 01:47:41,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 01:47:41,047 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 01:47:41,048 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 01:47:41,052 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 01:47:41,053 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 01:47:41,053 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 01:47:41,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-18 01:47:41,059 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 01:47:41,059 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 01:47:41,059 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 01:47:41,060 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.epf [2022-01-18 01:47:41,085 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 01:47:41,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 01:47:41,086 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 01:47:41,086 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 01:47:41,086 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 01:47:41,086 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 01:47:41,087 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 01:47:41,087 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 01:47:41,087 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 01:47:41,087 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 01:47:41,087 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 01:47:41,087 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 01:47:41,088 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 01:47:41,088 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 01:47:41,088 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 01:47:41,088 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 01:47:41,088 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 01:47:41,088 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 01:47:41,088 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 01:47:41,088 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 01:47:41,089 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 01:47:41,089 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 01:47:41,089 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 01:47:41,089 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 01:47:41,089 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 01:47:41,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 01:47:41,089 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 01:47:41,089 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 01:47:41,089 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 01:47:41,090 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 01:47:41,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 01:47:41,090 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 01:47:41,090 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 01:47:41,090 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 01:47:41,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 01:47:41,302 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 01:47:41,306 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 01:47:41,306 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 01:47:41,307 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 01:47:41,308 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-channel-sum.wvr.c [2022-01-18 01:47:41,383 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dde40ee0c/5689b95fce5b4370b0594b08d1166c26/FLAGb97d6cff0 [2022-01-18 01:47:41,687 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 01:47:41,688 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-channel-sum.wvr.c [2022-01-18 01:47:41,701 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dde40ee0c/5689b95fce5b4370b0594b08d1166c26/FLAGb97d6cff0 [2022-01-18 01:47:42,118 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dde40ee0c/5689b95fce5b4370b0594b08d1166c26 [2022-01-18 01:47:42,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 01:47:42,122 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 01:47:42,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 01:47:42,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 01:47:42,127 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 01:47:42,128 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 01:47:42" (1/1) ... [2022-01-18 01:47:42,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e164843 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:47:42, skipping insertion in model container [2022-01-18 01:47:42,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 01:47:42" (1/1) ... [2022-01-18 01:47:42,135 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 01:47:42,147 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 01:47:42,269 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-channel-sum.wvr.c[2947,2960] [2022-01-18 01:47:42,274 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 01:47:42,278 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 01:47:42,292 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-channel-sum.wvr.c[2947,2960] [2022-01-18 01:47:42,294 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 01:47:42,303 INFO L208 MainTranslator]: Completed translation [2022-01-18 01:47:42,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:47:42 WrapperNode [2022-01-18 01:47:42,303 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 01:47:42,304 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 01:47:42,304 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 01:47:42,304 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 01:47:42,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:47:42" (1/1) ... [2022-01-18 01:47:42,314 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:47:42" (1/1) ... [2022-01-18 01:47:42,336 INFO L137 Inliner]: procedures = 24, calls = 45, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 151 [2022-01-18 01:47:42,336 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 01:47:42,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 01:47:42,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 01:47:42,337 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 01:47:42,342 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:47:42" (1/1) ... [2022-01-18 01:47:42,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:47:42" (1/1) ... [2022-01-18 01:47:42,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:47:42" (1/1) ... [2022-01-18 01:47:42,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:47:42" (1/1) ... [2022-01-18 01:47:42,352 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:47:42" (1/1) ... [2022-01-18 01:47:42,354 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:47:42" (1/1) ... [2022-01-18 01:47:42,356 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:47:42" (1/1) ... [2022-01-18 01:47:42,357 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 01:47:42,358 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 01:47:42,358 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 01:47:42,358 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 01:47:42,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:47:42" (1/1) ... [2022-01-18 01:47:42,368 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 01:47:42,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:47:42,388 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 01:47:42,392 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 01:47:42,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 01:47:42,412 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 01:47:42,412 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 01:47:42,412 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 01:47:42,413 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 01:47:42,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 01:47:42,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 01:47:42,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 01:47:42,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-18 01:47:42,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-18 01:47:42,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-18 01:47:42,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 01:47:42,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 01:47:42,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-18 01:47:42,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 01:47:42,414 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 01:47:42,493 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 01:47:42,494 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 01:47:42,658 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 01:47:42,706 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 01:47:42,706 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-18 01:47:42,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 01:47:42 BoogieIcfgContainer [2022-01-18 01:47:42,707 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 01:47:42,708 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 01:47:42,709 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 01:47:42,711 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 01:47:42,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 01:47:42" (1/3) ... [2022-01-18 01:47:42,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ee83108 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 01:47:42, skipping insertion in model container [2022-01-18 01:47:42,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:47:42" (2/3) ... [2022-01-18 01:47:42,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ee83108 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 01:47:42, skipping insertion in model container [2022-01-18 01:47:42,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 01:47:42" (3/3) ... [2022-01-18 01:47:42,713 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-channel-sum.wvr.c [2022-01-18 01:47:42,716 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 01:47:42,717 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 01:47:42,717 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 01:47:42,717 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 01:47:42,780 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,781 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,781 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,781 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,782 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,782 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,782 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,782 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,782 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,782 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,783 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,783 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,783 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,783 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,783 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,783 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,784 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,784 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,784 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,784 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,784 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,784 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,784 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,785 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,785 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,785 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,785 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,785 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,785 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,785 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,786 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,786 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,786 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,786 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,787 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,791 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,791 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,791 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,792 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,792 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,792 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,792 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,792 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,792 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,793 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,793 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,793 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,793 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,793 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,793 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,793 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,793 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,794 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,794 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,794 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,794 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,795 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,795 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,795 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,795 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,795 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,795 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,796 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,796 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,796 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,796 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,796 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,796 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,797 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,797 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,797 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,797 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,797 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,797 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,798 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,798 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,798 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,798 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,800 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,800 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,800 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,801 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,801 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,801 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,801 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,802 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,802 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,802 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,802 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,802 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,802 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,802 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,802 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,802 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,803 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:47:42,805 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-18 01:47:42,840 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 01:47:42,845 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 01:47:42,845 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-18 01:47:42,854 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 138 places, 142 transitions, 300 flow [2022-01-18 01:47:42,947 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1358 states, 1357 states have (on average 2.7818717759764184) internal successors, (3775), 1357 states have internal predecessors, (3775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:47:42,951 INFO L276 IsEmpty]: Start isEmpty. Operand has 1358 states, 1357 states have (on average 2.7818717759764184) internal successors, (3775), 1357 states have internal predecessors, (3775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:47:42,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-18 01:47:42,977 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:47:42,977 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] [2022-01-18 01:47:42,978 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:47:42,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:47:42,981 INFO L85 PathProgramCache]: Analyzing trace with hash 183716022, now seen corresponding path program 1 times [2022-01-18 01:47:42,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:47:42,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275159246] [2022-01-18 01:47:42,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:47:42,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:47:43,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:47:43,118 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 01:47:43,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:47:43,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275159246] [2022-01-18 01:47:43,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275159246] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:47:43,119 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:47:43,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 01:47:43,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780222859] [2022-01-18 01:47:43,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:47:43,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-18 01:47:43,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:47:43,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-18 01:47:43,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 01:47:43,150 INFO L87 Difference]: Start difference. First operand has 1358 states, 1357 states have (on average 2.7818717759764184) internal successors, (3775), 1357 states have internal predecessors, (3775), 0 states have call successors, (0), 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 43.5) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:47:43,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:47:43,198 INFO L93 Difference]: Finished difference Result 1358 states and 3564 transitions. [2022-01-18 01:47:43,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-18 01:47:43,200 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 43.5) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-01-18 01:47:43,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:47:43,216 INFO L225 Difference]: With dead ends: 1358 [2022-01-18 01:47:43,216 INFO L226 Difference]: Without dead ends: 1293 [2022-01-18 01:47:43,217 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 01:47:43,219 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 01:47:43,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 115 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 01:47:43,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1293 states. [2022-01-18 01:47:43,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1293 to 1293. [2022-01-18 01:47:43,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1293 states, 1292 states have (on average 2.624613003095975) internal successors, (3391), 1292 states have internal predecessors, (3391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:47:43,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 3391 transitions. [2022-01-18 01:47:43,302 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 3391 transitions. Word has length 87 [2022-01-18 01:47:43,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:47:43,302 INFO L470 AbstractCegarLoop]: Abstraction has 1293 states and 3391 transitions. [2022-01-18 01:47:43,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 43.5) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:47:43,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 3391 transitions. [2022-01-18 01:47:43,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-18 01:47:43,307 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:47:43,308 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] [2022-01-18 01:47:43,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 01:47:43,308 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:47:43,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:47:43,311 INFO L85 PathProgramCache]: Analyzing trace with hash 611453624, now seen corresponding path program 1 times [2022-01-18 01:47:43,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:47:43,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387381702] [2022-01-18 01:47:43,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:47:43,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:47:43,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:47:43,503 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 01:47:43,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:47:43,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387381702] [2022-01-18 01:47:43,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387381702] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:47:43,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:47:43,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 01:47:43,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648613344] [2022-01-18 01:47:43,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:47:43,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 01:47:43,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:47:43,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 01:47:43,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 01:47:43,506 INFO L87 Difference]: Start difference. First operand 1293 states and 3391 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:47:43,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:47:43,598 INFO L93 Difference]: Finished difference Result 2395 states and 6374 transitions. [2022-01-18 01:47:43,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 01:47:43,598 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-18 01:47:43,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:47:43,611 INFO L225 Difference]: With dead ends: 2395 [2022-01-18 01:47:43,612 INFO L226 Difference]: Without dead ends: 2161 [2022-01-18 01:47:43,614 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 01:47:43,616 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 34 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 01:47:43,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 368 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 01:47:43,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2161 states. [2022-01-18 01:47:43,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2161 to 1355. [2022-01-18 01:47:43,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1355 states, 1354 states have (on average 2.6299852289512557) internal successors, (3561), 1354 states have internal predecessors, (3561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:47:43,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1355 states to 1355 states and 3561 transitions. [2022-01-18 01:47:43,655 INFO L78 Accepts]: Start accepts. Automaton has 1355 states and 3561 transitions. Word has length 88 [2022-01-18 01:47:43,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:47:43,655 INFO L470 AbstractCegarLoop]: Abstraction has 1355 states and 3561 transitions. [2022-01-18 01:47:43,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:47:43,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1355 states and 3561 transitions. [2022-01-18 01:47:43,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-18 01:47:43,659 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:47:43,659 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] [2022-01-18 01:47:43,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 01:47:43,659 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:47:43,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:47:43,660 INFO L85 PathProgramCache]: Analyzing trace with hash 423797772, now seen corresponding path program 1 times [2022-01-18 01:47:43,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:47:43,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275916682] [2022-01-18 01:47:43,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:47:43,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:47:43,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:47:43,780 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 01:47:43,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:47:43,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275916682] [2022-01-18 01:47:43,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275916682] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:47:43,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:47:43,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 01:47:43,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733948311] [2022-01-18 01:47:43,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:47:43,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 01:47:43,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:47:43,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 01:47:43,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-18 01:47:43,782 INFO L87 Difference]: Start difference. First operand 1355 states and 3561 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:47:43,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:47:43,837 INFO L93 Difference]: Finished difference Result 1268 states and 3355 transitions. [2022-01-18 01:47:43,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 01:47:43,839 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2022-01-18 01:47:43,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:47:43,844 INFO L225 Difference]: With dead ends: 1268 [2022-01-18 01:47:43,844 INFO L226 Difference]: Without dead ends: 1236 [2022-01-18 01:47:43,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-18 01:47:43,845 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 50 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 01:47:43,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 239 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 01:47:43,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1236 states. [2022-01-18 01:47:43,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1236 to 1236. [2022-01-18 01:47:43,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 1235 states have (on average 2.6582995951417003) internal successors, (3283), 1235 states have internal predecessors, (3283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:47:43,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 3283 transitions. [2022-01-18 01:47:43,872 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 3283 transitions. Word has length 103 [2022-01-18 01:47:43,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:47:43,873 INFO L470 AbstractCegarLoop]: Abstraction has 1236 states and 3283 transitions. [2022-01-18 01:47:43,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:47:43,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 3283 transitions. [2022-01-18 01:47:43,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-18 01:47:43,879 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:47:43,879 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:47:43,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 01:47:43,880 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:47:43,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:47:43,880 INFO L85 PathProgramCache]: Analyzing trace with hash -636542678, now seen corresponding path program 1 times [2022-01-18 01:47:43,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:47:43,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927708488] [2022-01-18 01:47:43,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:47:43,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:47:43,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:47:43,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 01:47:43,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:47:43,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927708488] [2022-01-18 01:47:43,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927708488] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:47:43,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:47:43,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 01:47:43,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30368963] [2022-01-18 01:47:43,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:47:43,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 01:47:43,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:47:43,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 01:47:43,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 01:47:43,970 INFO L87 Difference]: Start difference. First operand 1236 states and 3283 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:47:43,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:47:43,993 INFO L93 Difference]: Finished difference Result 1303 states and 3465 transitions. [2022-01-18 01:47:43,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 01:47:43,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 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 01:47:43,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:47:44,000 INFO L225 Difference]: With dead ends: 1303 [2022-01-18 01:47:44,000 INFO L226 Difference]: Without dead ends: 1303 [2022-01-18 01:47:44,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 01:47:44,008 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 26 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 01:47:44,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 220 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 01:47:44,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2022-01-18 01:47:44,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1220. [2022-01-18 01:47:44,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1220 states, 1219 states have (on average 2.657095980311731) internal successors, (3239), 1219 states have internal predecessors, (3239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:47:44,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 3239 transitions. [2022-01-18 01:47:44,038 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 3239 transitions. Word has length 110 [2022-01-18 01:47:44,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:47:44,039 INFO L470 AbstractCegarLoop]: Abstraction has 1220 states and 3239 transitions. [2022-01-18 01:47:44,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:47:44,039 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 3239 transitions. [2022-01-18 01:47:44,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-18 01:47:44,042 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:47:44,042 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, 1, 1, 1, 1] [2022-01-18 01:47:44,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 01:47:44,043 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:47:44,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:47:44,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1002661117, now seen corresponding path program 1 times [2022-01-18 01:47:44,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:47:44,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089747266] [2022-01-18 01:47:44,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:47:44,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:47:44,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:47:44,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:47:44,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:47:44,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089747266] [2022-01-18 01:47:44,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089747266] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:47:44,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:47:44,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 01:47:44,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152891100] [2022-01-18 01:47:44,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:47:44,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 01:47:44,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:47:44,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 01:47:44,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 01:47:44,204 INFO L87 Difference]: Start difference. First operand 1220 states and 3239 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:47:44,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:47:44,245 INFO L93 Difference]: Finished difference Result 1272 states and 3334 transitions. [2022-01-18 01:47:44,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 01:47:44,246 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 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 01:47:44,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:47:44,250 INFO L225 Difference]: With dead ends: 1272 [2022-01-18 01:47:44,250 INFO L226 Difference]: Without dead ends: 1186 [2022-01-18 01:47:44,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 01:47:44,251 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 69 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 01:47:44,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 314 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 01:47:44,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2022-01-18 01:47:44,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 1186. [2022-01-18 01:47:44,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1186 states, 1185 states have (on average 2.6582278481012658) internal successors, (3150), 1185 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:47:44,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 3150 transitions. [2022-01-18 01:47:44,276 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 3150 transitions. Word has length 110 [2022-01-18 01:47:44,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:47:44,277 INFO L470 AbstractCegarLoop]: Abstraction has 1186 states and 3150 transitions. [2022-01-18 01:47:44,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:47:44,278 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 3150 transitions. [2022-01-18 01:47:44,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-18 01:47:44,280 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:47:44,281 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:47:44,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 01:47:44,281 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:47:44,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:47:44,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1152534637, now seen corresponding path program 2 times [2022-01-18 01:47:44,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:47:44,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135465992] [2022-01-18 01:47:44,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:47:44,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:47:44,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:47:44,433 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 01:47:44,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:47:44,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135465992] [2022-01-18 01:47:44,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135465992] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:47:44,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953532017] [2022-01-18 01:47:44,434 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 01:47:44,434 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:47:44,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:47:44,436 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 01:47:44,449 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 01:47:44,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 01:47:44,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:47:44,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 01:47:44,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:47:44,786 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 01:47:44,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:47:45,020 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 01:47:45,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953532017] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:47:45,020 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:47:45,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-01-18 01:47:45,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635580242] [2022-01-18 01:47:45,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:47:45,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 01:47:45,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:47:45,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 01:47:45,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-01-18 01:47:45,022 INFO L87 Difference]: Start difference. First operand 1186 states and 3150 transitions. Second operand has 15 states, 15 states have (on average 12.133333333333333) internal successors, (182), 15 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:47:45,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:47:45,140 INFO L93 Difference]: Finished difference Result 1223 states and 3196 transitions. [2022-01-18 01:47:45,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 01:47:45,140 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 12.133333333333333) internal successors, (182), 15 states have internal predecessors, (182), 0 states have call successors, (0), 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 01:47:45,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:47:45,145 INFO L225 Difference]: With dead ends: 1223 [2022-01-18 01:47:45,145 INFO L226 Difference]: Without dead ends: 1192 [2022-01-18 01:47:45,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2022-01-18 01:47:45,145 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 334 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:47:45,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 733 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:47:45,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2022-01-18 01:47:45,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1187. [2022-01-18 01:47:45,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1187 states, 1186 states have (on average 2.6568296795952784) internal successors, (3151), 1186 states have internal predecessors, (3151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:47:45,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 3151 transitions. [2022-01-18 01:47:45,165 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 3151 transitions. Word has length 110 [2022-01-18 01:47:45,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:47:45,165 INFO L470 AbstractCegarLoop]: Abstraction has 1187 states and 3151 transitions. [2022-01-18 01:47:45,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 12.133333333333333) internal successors, (182), 15 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:47:45,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 3151 transitions. [2022-01-18 01:47:45,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-01-18 01:47:45,168 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:47:45,168 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:47:45,189 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-18 01:47:45,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-01-18 01:47:45,389 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:47:45,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:47:45,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1523617637, now seen corresponding path program 1 times [2022-01-18 01:47:45,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:47:45,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819798369] [2022-01-18 01:47:45,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:47:45,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:47:45,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:47:45,542 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 01:47:45,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:47:45,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819798369] [2022-01-18 01:47:45,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819798369] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:47:45,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674466193] [2022-01-18 01:47:45,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:47:45,543 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:47:45,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:47:45,544 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 01:47:45,545 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 01:47:45,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:47:45,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 52 conjunts are in the unsatisfiable core [2022-01-18 01:47:45,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:47:46,046 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 01:47:46,300 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 01:47:46,365 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 01:47:46,650 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-01-18 01:47:46,762 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:47:46,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:47:47,990 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 01:47:47,990 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 72 [2022-01-18 01:47:47,999 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 01:47:47,999 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 494 treesize of output 462 [2022-01-18 01:47:48,010 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 01:47:48,010 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 446 treesize of output 426 [2022-01-18 01:47:48,021 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 01:47:48,021 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 410 treesize of output 354 [2022-01-18 01:47:48,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:47:48,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674466193] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:47:48,831 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:47:48,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 28, 25] total 52 [2022-01-18 01:47:48,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673062854] [2022-01-18 01:47:48,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:47:48,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-18 01:47:48,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:47:48,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-18 01:47:48,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=468, Invalid=2150, Unknown=34, NotChecked=0, Total=2652 [2022-01-18 01:47:48,833 INFO L87 Difference]: Start difference. First operand 1187 states and 3151 transitions. Second operand has 52 states, 52 states have (on average 5.653846153846154) internal successors, (294), 52 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:47:51,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:47:51,345 INFO L93 Difference]: Finished difference Result 3877 states and 10601 transitions. [2022-01-18 01:47:51,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-18 01:47:51,345 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.653846153846154) internal successors, (294), 52 states have internal predecessors, (294), 0 states have call successors, (0), 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 117 [2022-01-18 01:47:51,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:47:51,365 INFO L225 Difference]: With dead ends: 3877 [2022-01-18 01:47:51,365 INFO L226 Difference]: Without dead ends: 3661 [2022-01-18 01:47:51,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 192 SyntacticMatches, 10 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2808 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1517, Invalid=7379, Unknown=34, NotChecked=0, Total=8930 [2022-01-18 01:47:51,367 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 1579 mSDsluCounter, 4206 mSDsCounter, 0 mSdLazyCounter, 1984 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1579 SdHoareTripleChecker+Valid, 4216 SdHoareTripleChecker+Invalid, 2705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 657 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 01:47:51,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1579 Valid, 4216 Invalid, 2705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1984 Invalid, 0 Unknown, 657 Unchecked, 0.8s Time] [2022-01-18 01:47:51,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3661 states. [2022-01-18 01:47:51,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3661 to 2485. [2022-01-18 01:47:51,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2485 states, 2484 states have (on average 2.7355072463768115) internal successors, (6795), 2484 states have internal predecessors, (6795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:47:51,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2485 states to 2485 states and 6795 transitions. [2022-01-18 01:47:51,420 INFO L78 Accepts]: Start accepts. Automaton has 2485 states and 6795 transitions. Word has length 117 [2022-01-18 01:47:51,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:47:51,420 INFO L470 AbstractCegarLoop]: Abstraction has 2485 states and 6795 transitions. [2022-01-18 01:47:51,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.653846153846154) internal successors, (294), 52 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:47:51,420 INFO L276 IsEmpty]: Start isEmpty. Operand 2485 states and 6795 transitions. [2022-01-18 01:47:51,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-18 01:47:51,425 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:47:51,426 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2022-01-18 01:47:51,446 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-18 01:47:51,639 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,SelfDestructingSolverStorable6 [2022-01-18 01:47:51,639 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:47:51,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:47:51,640 INFO L85 PathProgramCache]: Analyzing trace with hash -2095775547, now seen corresponding path program 2 times [2022-01-18 01:47:51,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:47:51,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918130990] [2022-01-18 01:47:51,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:47:51,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:47:51,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:47:51,701 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 01:47:51,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:47:51,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918130990] [2022-01-18 01:47:51,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918130990] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:47:51,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371193060] [2022-01-18 01:47:51,702 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 01:47:51,702 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:47:51,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:47:51,703 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 01:47:51,704 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 01:47:51,771 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 01:47:51,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:47:51,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-18 01:47:51,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:47:52,192 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:47:52,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:47:52,580 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:47:52,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371193060] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:47:52,580 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:47:52,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 15, 15] total 29 [2022-01-18 01:47:52,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18366546] [2022-01-18 01:47:52,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:47:52,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-18 01:47:52,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:47:52,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-18 01:47:52,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=691, Unknown=0, NotChecked=0, Total=812 [2022-01-18 01:47:52,582 INFO L87 Difference]: Start difference. First operand 2485 states and 6795 transitions. Second operand has 29 states, 29 states have (on average 9.137931034482758) internal successors, (265), 29 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:47:53,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:47:53,839 INFO L93 Difference]: Finished difference Result 5822 states and 15827 transitions. [2022-01-18 01:47:53,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 01:47:53,839 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 9.137931034482758) internal successors, (265), 29 states have internal predecessors, (265), 0 states have call successors, (0), 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 132 [2022-01-18 01:47:53,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:47:53,856 INFO L225 Difference]: With dead ends: 5822 [2022-01-18 01:47:53,856 INFO L226 Difference]: Without dead ends: 4195 [2022-01-18 01:47:53,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 853 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=891, Invalid=3269, Unknown=0, NotChecked=0, Total=4160 [2022-01-18 01:47:53,857 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 1024 mSDsluCounter, 3469 mSDsCounter, 0 mSdLazyCounter, 1322 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 3622 SdHoareTripleChecker+Invalid, 1392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 01:47:53,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1024 Valid, 3622 Invalid, 1392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1322 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 01:47:53,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4195 states. [2022-01-18 01:47:53,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4195 to 3782. [2022-01-18 01:47:53,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3782 states, 3781 states have (on average 2.7799523935466808) internal successors, (10511), 3781 states have internal predecessors, (10511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:47:53,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3782 states to 3782 states and 10511 transitions. [2022-01-18 01:47:53,941 INFO L78 Accepts]: Start accepts. Automaton has 3782 states and 10511 transitions. Word has length 132 [2022-01-18 01:47:53,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:47:53,942 INFO L470 AbstractCegarLoop]: Abstraction has 3782 states and 10511 transitions. [2022-01-18 01:47:53,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.137931034482758) internal successors, (265), 29 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:47:53,942 INFO L276 IsEmpty]: Start isEmpty. Operand 3782 states and 10511 transitions. [2022-01-18 01:47:53,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-18 01:47:53,949 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:47:53,950 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-18 01:47:53,966 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-01-18 01:47:54,166 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 01:47:54,166 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:47:54,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:47:54,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1550321171, now seen corresponding path program 1 times [2022-01-18 01:47:54,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:47:54,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184216066] [2022-01-18 01:47:54,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:47:54,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:47:54,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:47:54,452 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 01:47:54,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:47:54,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184216066] [2022-01-18 01:47:54,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184216066] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:47:54,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199133330] [2022-01-18 01:47:54,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:47:54,453 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:47:54,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:47:54,454 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 01:47:54,455 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 01:47:54,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:47:54,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 78 conjunts are in the unsatisfiable core [2022-01-18 01:47:54,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:47:55,119 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 01:47:55,426 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 01:47:55,512 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 01:47:56,383 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-18 01:47:56,383 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 19 [2022-01-18 01:47:56,444 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:47:56,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:47:58,655 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 01:47:58,656 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 185 treesize of output 125 [2022-01-18 01:47:58,686 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-01-18 01:47:58,687 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 384 treesize of output 385 [2022-01-18 01:47:58,719 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-01-18 01:47:58,719 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 333 treesize of output 307 [2022-01-18 01:47:58,751 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-01-18 01:47:58,752 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 255 treesize of output 268 [2022-01-18 01:48:01,731 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:48:01,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199133330] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:48:01,731 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:48:01,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 37, 34] total 77 [2022-01-18 01:48:01,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963352323] [2022-01-18 01:48:01,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:48:01,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-01-18 01:48:01,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:48:01,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-01-18 01:48:01,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=788, Invalid=5017, Unknown=47, NotChecked=0, Total=5852 [2022-01-18 01:48:01,734 INFO L87 Difference]: Start difference. First operand 3782 states and 10511 transitions. Second operand has 77 states, 77 states have (on average 4.857142857142857) internal successors, (374), 77 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:48:27,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:48:27,163 INFO L93 Difference]: Finished difference Result 25931 states and 72849 transitions. [2022-01-18 01:48:27,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 341 states. [2022-01-18 01:48:27,163 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 4.857142857142857) internal successors, (374), 77 states have internal predecessors, (374), 0 states have call successors, (0), 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 146 [2022-01-18 01:48:27,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:48:27,231 INFO L225 Difference]: With dead ends: 25931 [2022-01-18 01:48:27,231 INFO L226 Difference]: Without dead ends: 23855 [2022-01-18 01:48:27,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 641 GetRequests, 229 SyntacticMatches, 6 SemanticMatches, 406 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72565 ImplicationChecksByTransitivity, 22.1s TimeCoverageRelationStatistics Valid=17788, Invalid=148221, Unknown=47, NotChecked=0, Total=166056 [2022-01-18 01:48:27,247 INFO L933 BasicCegarLoop]: 522 mSDtfsCounter, 5998 mSDsluCounter, 16002 mSDsCounter, 0 mSdLazyCounter, 8188 mSolverCounterSat, 523 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5998 SdHoareTripleChecker+Valid, 15768 SdHoareTripleChecker+Invalid, 13147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 523 IncrementalHoareTripleChecker+Valid, 8188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4436 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-01-18 01:48:27,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5998 Valid, 15768 Invalid, 13147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [523 Valid, 8188 Invalid, 0 Unknown, 4436 Unchecked, 3.9s Time] [2022-01-18 01:48:27,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23855 states. [2022-01-18 01:48:27,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23855 to 5984. [2022-01-18 01:48:27,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5984 states, 5983 states have (on average 2.8034430887514623) internal successors, (16773), 5983 states have internal predecessors, (16773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:48:27,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5984 states to 5984 states and 16773 transitions. [2022-01-18 01:48:27,492 INFO L78 Accepts]: Start accepts. Automaton has 5984 states and 16773 transitions. Word has length 146 [2022-01-18 01:48:27,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:48:27,492 INFO L470 AbstractCegarLoop]: Abstraction has 5984 states and 16773 transitions. [2022-01-18 01:48:27,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 4.857142857142857) internal successors, (374), 77 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:48:27,493 INFO L276 IsEmpty]: Start isEmpty. Operand 5984 states and 16773 transitions. [2022-01-18 01:48:27,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-18 01:48:27,504 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:48:27,504 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-18 01:48:27,524 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 01:48:27,721 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 01:48:27,721 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:48:27,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:48:27,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1190395005, now seen corresponding path program 2 times [2022-01-18 01:48:27,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:48:27,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248752130] [2022-01-18 01:48:27,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:48:27,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:48:27,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:48:28,601 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:48:28,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:48:28,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248752130] [2022-01-18 01:48:28,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248752130] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:48:28,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907902052] [2022-01-18 01:48:28,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 01:48:28,602 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:48:28,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:48:28,603 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 01:48:28,603 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 01:48:28,677 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 01:48:28,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:48:28,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 59 conjunts are in the unsatisfiable core [2022-01-18 01:48:28,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:48:30,682 INFO L353 Elim1Store]: treesize reduction 93, result has 7.0 percent of original size [2022-01-18 01:48:30,683 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 25 [2022-01-18 01:48:30,762 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:48:30,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:48:31,671 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-01-18 01:48:31,671 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 78 [2022-01-18 01:48:33,656 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:48:33,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907902052] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:48:33,657 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:48:33,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 28, 28] total 79 [2022-01-18 01:48:33,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371680631] [2022-01-18 01:48:33,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:48:33,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-01-18 01:48:33,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:48:33,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-01-18 01:48:33,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=611, Invalid=5551, Unknown=0, NotChecked=0, Total=6162 [2022-01-18 01:48:33,660 INFO L87 Difference]: Start difference. First operand 5984 states and 16773 transitions. Second operand has 79 states, 79 states have (on average 4.7594936708860756) internal successors, (376), 79 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:48:45,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:48:45,952 INFO L93 Difference]: Finished difference Result 24875 states and 69267 transitions. [2022-01-18 01:48:45,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 227 states. [2022-01-18 01:48:45,953 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 4.7594936708860756) internal successors, (376), 79 states have internal predecessors, (376), 0 states have call successors, (0), 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 146 [2022-01-18 01:48:45,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:48:46,013 INFO L225 Difference]: With dead ends: 24875 [2022-01-18 01:48:46,013 INFO L226 Difference]: Without dead ends: 24703 [2022-01-18 01:48:46,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 559 GetRequests, 273 SyntacticMatches, 17 SemanticMatches, 269 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28478 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=6470, Invalid=66700, Unknown=0, NotChecked=0, Total=73170 [2022-01-18 01:48:46,017 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 2814 mSDsluCounter, 13672 mSDsCounter, 0 mSdLazyCounter, 4448 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2814 SdHoareTripleChecker+Valid, 13444 SdHoareTripleChecker+Invalid, 10021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 4448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5387 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-18 01:48:46,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2814 Valid, 13444 Invalid, 10021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 4448 Invalid, 0 Unknown, 5387 Unchecked, 2.0s Time] [2022-01-18 01:48:46,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24703 states. [2022-01-18 01:48:46,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24703 to 9945. [2022-01-18 01:48:46,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9945 states, 9944 states have (on average 2.8339702333065167) internal successors, (28181), 9944 states have internal predecessors, (28181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:48:46,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9945 states to 9945 states and 28181 transitions. [2022-01-18 01:48:46,333 INFO L78 Accepts]: Start accepts. Automaton has 9945 states and 28181 transitions. Word has length 146 [2022-01-18 01:48:46,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:48:46,334 INFO L470 AbstractCegarLoop]: Abstraction has 9945 states and 28181 transitions. [2022-01-18 01:48:46,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 4.7594936708860756) internal successors, (376), 79 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:48:46,334 INFO L276 IsEmpty]: Start isEmpty. Operand 9945 states and 28181 transitions. [2022-01-18 01:48:46,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-18 01:48:46,351 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:48:46,351 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-18 01:48:46,370 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 01:48:46,559 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,SelfDestructingSolverStorable9 [2022-01-18 01:48:46,560 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:48:46,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:48:46,560 INFO L85 PathProgramCache]: Analyzing trace with hash -728036475, now seen corresponding path program 3 times [2022-01-18 01:48:46,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:48:46,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226009518] [2022-01-18 01:48:46,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:48:46,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:48:46,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:48:47,403 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:48:47,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:48:47,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226009518] [2022-01-18 01:48:47,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226009518] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:48:47,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580657939] [2022-01-18 01:48:47,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 01:48:47,404 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:48:47,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:48:47,405 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 01:48:47,405 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 01:48:47,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 01:48:47,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:48:47,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 84 conjunts are in the unsatisfiable core [2022-01-18 01:48:47,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:48:47,974 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 01:48:48,120 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 01:48:48,437 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 01:48:48,520 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 01:48:50,729 INFO L353 Elim1Store]: treesize reduction 82, result has 18.0 percent of original size [2022-01-18 01:48:50,730 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 36 [2022-01-18 01:48:51,100 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:48:51,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:49:10,955 INFO L353 Elim1Store]: treesize reduction 28, result has 54.8 percent of original size [2022-01-18 01:49:10,955 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 224 treesize of output 143 [2022-01-18 01:49:11,001 INFO L353 Elim1Store]: treesize reduction 101, result has 37.3 percent of original size [2022-01-18 01:49:11,001 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 805 treesize of output 760 [2022-01-18 01:49:11,032 INFO L353 Elim1Store]: treesize reduction 80, result has 17.5 percent of original size [2022-01-18 01:49:11,032 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 688 treesize of output 632 [2022-01-18 01:49:11,064 INFO L353 Elim1Store]: treesize reduction 80, result has 17.5 percent of original size [2022-01-18 01:49:11,064 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 616 treesize of output 488 [2022-01-18 01:49:14,363 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:49:14,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580657939] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:49:14,364 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:49:14,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 43, 41] total 109 [2022-01-18 01:49:14,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610992909] [2022-01-18 01:49:14,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:49:14,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2022-01-18 01:49:14,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:49:14,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2022-01-18 01:49:14,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1385, Invalid=10326, Unknown=61, NotChecked=0, Total=11772 [2022-01-18 01:49:14,366 INFO L87 Difference]: Start difference. First operand 9945 states and 28181 transitions. Second operand has 109 states, 109 states have (on average 3.5688073394495414) internal successors, (389), 109 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:49:32,091 WARN L228 SmtUtils]: Spent 5.34s on a formula simplification. DAG size of input: 127 DAG size of output: 92 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-18 01:49:48,504 WARN L228 SmtUtils]: Spent 9.60s on a formula simplification. DAG size of input: 132 DAG size of output: 106 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-18 01:49:57,526 WARN L228 SmtUtils]: Spent 8.43s on a formula simplification. DAG size of input: 127 DAG size of output: 92 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-18 01:50:42,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:50:42,157 INFO L93 Difference]: Finished difference Result 40689 states and 113720 transitions. [2022-01-18 01:50:42,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 320 states. [2022-01-18 01:50:42,157 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 3.5688073394495414) internal successors, (389), 109 states have internal predecessors, (389), 0 states have call successors, (0), 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 146 [2022-01-18 01:50:42,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:50:42,239 INFO L225 Difference]: With dead ends: 40689 [2022-01-18 01:50:42,239 INFO L226 Difference]: Without dead ends: 38515 [2022-01-18 01:50:42,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 685 GetRequests, 280 SyntacticMatches, 21 SemanticMatches, 384 ConstructedPredicates, 0 IntricatePredicates, 5 DeprecatedPredicates, 57258 ImplicationChecksByTransitivity, 85.9s TimeCoverageRelationStatistics Valid=11433, Invalid=137105, Unknown=72, NotChecked=0, Total=148610 [2022-01-18 01:50:42,245 INFO L933 BasicCegarLoop]: 608 mSDtfsCounter, 7945 mSDsluCounter, 29789 mSDsCounter, 0 mSdLazyCounter, 5997 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7945 SdHoareTripleChecker+Valid, 29473 SdHoareTripleChecker+Invalid, 22178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 5997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15795 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-18 01:50:42,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7945 Valid, 29473 Invalid, 22178 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [386 Valid, 5997 Invalid, 0 Unknown, 15795 Unchecked, 2.8s Time] [2022-01-18 01:50:42,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38515 states. [2022-01-18 01:50:42,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38515 to 19653. [2022-01-18 01:50:42,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19653 states, 19652 states have (on average 2.893293303480562) internal successors, (56859), 19652 states have internal predecessors, (56859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:50:42,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19653 states to 19653 states and 56859 transitions. [2022-01-18 01:50:42,846 INFO L78 Accepts]: Start accepts. Automaton has 19653 states and 56859 transitions. Word has length 146 [2022-01-18 01:50:42,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:50:42,846 INFO L470 AbstractCegarLoop]: Abstraction has 19653 states and 56859 transitions. [2022-01-18 01:50:42,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 109 states have (on average 3.5688073394495414) internal successors, (389), 109 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:50:42,847 INFO L276 IsEmpty]: Start isEmpty. Operand 19653 states and 56859 transitions. [2022-01-18 01:50:42,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-18 01:50:42,882 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:50:42,882 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-18 01:50:42,902 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 01:50:43,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:50:43,099 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:50:43,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:50:43,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1254580893, now seen corresponding path program 4 times [2022-01-18 01:50:43,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:50:43,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319090423] [2022-01-18 01:50:43,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:50:43,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:50:43,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:50:43,957 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:50:43,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:50:43,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319090423] [2022-01-18 01:50:43,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319090423] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:50:43,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721521503] [2022-01-18 01:50:43,957 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 01:50:43,957 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:50:43,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:50:43,958 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 01:50:43,959 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 01:50:44,025 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 01:50:44,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:50:44,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 85 conjunts are in the unsatisfiable core [2022-01-18 01:50:44,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:50:44,053 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 01:50:44,083 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-01-18 01:50:44,084 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-01-18 01:50:44,403 INFO L353 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-01-18 01:50:44,403 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2022-01-18 01:50:44,567 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 01:50:44,723 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 01:50:45,075 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 01:50:45,156 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 01:50:46,255 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-18 01:50:46,256 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 15 [2022-01-18 01:50:46,333 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:50:46,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:50:49,253 INFO L353 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-01-18 01:50:49,253 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 233 treesize of output 138 [2022-01-18 01:50:49,285 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-01-18 01:50:49,285 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 808 treesize of output 758 [2022-01-18 01:50:49,323 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-01-18 01:50:49,324 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 706 treesize of output 602 [2022-01-18 01:50:49,361 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-01-18 01:50:49,362 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 550 treesize of output 524 [2022-01-18 01:50:52,789 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:50:52,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721521503] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:50:52,789 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:50:52,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 37, 37] total 97 [2022-01-18 01:50:52,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901116180] [2022-01-18 01:50:52,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:50:52,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2022-01-18 01:50:52,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:50:52,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2022-01-18 01:50:52,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1199, Invalid=8057, Unknown=56, NotChecked=0, Total=9312 [2022-01-18 01:50:52,791 INFO L87 Difference]: Start difference. First operand 19653 states and 56859 transitions. Second operand has 97 states, 97 states have (on average 3.9278350515463916) internal successors, (381), 97 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:52:11,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:52:11,328 INFO L93 Difference]: Finished difference Result 97763 states and 278759 transitions. [2022-01-18 01:52:11,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 699 states. [2022-01-18 01:52:11,328 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 3.9278350515463916) internal successors, (381), 97 states have internal predecessors, (381), 0 states have call successors, (0), 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 146 [2022-01-18 01:52:11,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:52:11,563 INFO L225 Difference]: With dead ends: 97763 [2022-01-18 01:52:11,564 INFO L226 Difference]: Without dead ends: 92404 [2022-01-18 01:52:11,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1033 GetRequests, 242 SyntacticMatches, 8 SemanticMatches, 783 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274940 ImplicationChecksByTransitivity, 70.6s TimeCoverageRelationStatistics Valid=44218, Invalid=571166, Unknown=56, NotChecked=0, Total=615440 [2022-01-18 01:52:11,595 INFO L933 BasicCegarLoop]: 535 mSDtfsCounter, 8862 mSDsluCounter, 24212 mSDsCounter, 0 mSdLazyCounter, 12140 mSolverCounterSat, 1008 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8862 SdHoareTripleChecker+Valid, 23604 SdHoareTripleChecker+Invalid, 28277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1008 IncrementalHoareTripleChecker+Valid, 12140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15129 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-01-18 01:52:11,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8862 Valid, 23604 Invalid, 28277 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1008 Valid, 12140 Invalid, 0 Unknown, 15129 Unchecked, 6.7s Time] [2022-01-18 01:52:11,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92404 states. [2022-01-18 01:52:12,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92404 to 20435. [2022-01-18 01:52:12,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20435 states, 20434 states have (on average 2.8953704609963786) internal successors, (59164), 20434 states have internal predecessors, (59164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:52:12,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20435 states to 20435 states and 59164 transitions. [2022-01-18 01:52:12,560 INFO L78 Accepts]: Start accepts. Automaton has 20435 states and 59164 transitions. Word has length 146 [2022-01-18 01:52:12,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:52:12,560 INFO L470 AbstractCegarLoop]: Abstraction has 20435 states and 59164 transitions. [2022-01-18 01:52:12,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 3.9278350515463916) internal successors, (381), 97 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:52:12,561 INFO L276 IsEmpty]: Start isEmpty. Operand 20435 states and 59164 transitions. [2022-01-18 01:52:12,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-18 01:52:12,596 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:52:12,596 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-18 01:52:12,612 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 01:52:12,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:52:12,812 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:52:12,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:52:12,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1211438665, now seen corresponding path program 5 times [2022-01-18 01:52:12,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:52:12,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587889264] [2022-01-18 01:52:12,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:52:12,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:52:12,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:52:13,066 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 01:52:13,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:52:13,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587889264] [2022-01-18 01:52:13,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587889264] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:52:13,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978878834] [2022-01-18 01:52:13,067 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 01:52:13,067 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:52:13,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:52:13,068 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 01:52:13,068 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 01:52:13,140 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 01:52:13,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:52:13,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 81 conjunts are in the unsatisfiable core [2022-01-18 01:52:13,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:52:13,570 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 01:52:13,710 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 01:52:13,990 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 01:52:14,056 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 01:52:15,655 INFO L353 Elim1Store]: treesize reduction 93, result has 7.0 percent of original size [2022-01-18 01:52:15,656 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 21 [2022-01-18 01:52:15,727 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:52:15,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:52:23,361 INFO L353 Elim1Store]: treesize reduction 28, result has 54.8 percent of original size [2022-01-18 01:52:23,362 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 226 treesize of output 145 [2022-01-18 01:52:23,426 INFO L353 Elim1Store]: treesize reduction 62, result has 62.4 percent of original size [2022-01-18 01:52:23,427 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 401 treesize of output 445 [2022-01-18 01:52:23,464 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-01-18 01:52:23,465 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 330 treesize of output 306 [2022-01-18 01:52:23,504 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-01-18 01:52:23,504 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 254 treesize of output 268 [2022-01-18 01:52:40,716 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:52:40,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978878834] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:52:40,717 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:52:40,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 38, 36] total 80 [2022-01-18 01:52:40,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372183028] [2022-01-18 01:52:40,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:52:40,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-01-18 01:52:40,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:52:40,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-01-18 01:52:40,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=645, Invalid=5614, Unknown=61, NotChecked=0, Total=6320 [2022-01-18 01:52:40,718 INFO L87 Difference]: Start difference. First operand 20435 states and 59164 transitions. Second operand has 80 states, 80 states have (on average 4.675) internal successors, (374), 80 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:52:55,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:52:55,334 INFO L93 Difference]: Finished difference Result 39946 states and 113398 transitions. [2022-01-18 01:52:55,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2022-01-18 01:52:55,334 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 4.675) internal successors, (374), 80 states have internal predecessors, (374), 0 states have call successors, (0), 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 146 [2022-01-18 01:52:55,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:52:55,414 INFO L225 Difference]: With dead ends: 39946 [2022-01-18 01:52:55,414 INFO L226 Difference]: Without dead ends: 39014 [2022-01-18 01:52:55,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 249 SyntacticMatches, 17 SemanticMatches, 258 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 25552 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=6045, Invalid=61234, Unknown=61, NotChecked=0, Total=67340 [2022-01-18 01:52:55,419 INFO L933 BasicCegarLoop]: 383 mSDtfsCounter, 2884 mSDsluCounter, 15554 mSDsCounter, 0 mSdLazyCounter, 3594 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2884 SdHoareTripleChecker+Valid, 15483 SdHoareTripleChecker+Invalid, 10069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 3594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6264 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-18 01:52:55,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2884 Valid, 15483 Invalid, 10069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 3594 Invalid, 0 Unknown, 6264 Unchecked, 1.7s Time] [2022-01-18 01:52:55,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39014 states. [2022-01-18 01:52:55,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39014 to 25195. [2022-01-18 01:52:55,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25195 states, 25194 states have (on average 2.8947765340954197) internal successors, (72931), 25194 states have internal predecessors, (72931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:52:56,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25195 states to 25195 states and 72931 transitions. [2022-01-18 01:52:56,002 INFO L78 Accepts]: Start accepts. Automaton has 25195 states and 72931 transitions. Word has length 146 [2022-01-18 01:52:56,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:52:56,002 INFO L470 AbstractCegarLoop]: Abstraction has 25195 states and 72931 transitions. [2022-01-18 01:52:56,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 4.675) internal successors, (374), 80 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:52:56,002 INFO L276 IsEmpty]: Start isEmpty. Operand 25195 states and 72931 transitions. [2022-01-18 01:52:56,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-18 01:52:56,040 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:52:56,040 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-18 01:52:56,056 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 01:52:56,243 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,SelfDestructingSolverStorable12 [2022-01-18 01:52:56,243 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:52:56,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:52:56,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1837663337, now seen corresponding path program 6 times [2022-01-18 01:52:56,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:52:56,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858235204] [2022-01-18 01:52:56,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:52:56,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:52:56,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:52:56,508 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 01:52:56,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:52:56,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858235204] [2022-01-18 01:52:56,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858235204] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:52:56,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380623101] [2022-01-18 01:52:56,509 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 01:52:56,509 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:52:56,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:52:56,510 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 01:52:56,511 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 01:52:56,585 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 01:52:56,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:52:56,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 86 conjunts are in the unsatisfiable core [2022-01-18 01:52:56,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:52:57,042 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 01:52:57,208 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 01:52:57,528 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 01:52:57,608 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 01:52:59,037 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 01:52:59,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 01:52:59,040 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 01:52:59,040 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 22 [2022-01-18 01:52:59,268 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:52:59,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:53:07,939 INFO L353 Elim1Store]: treesize reduction 28, result has 54.8 percent of original size [2022-01-18 01:53:07,939 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 225 treesize of output 144 [2022-01-18 01:53:08,003 INFO L353 Elim1Store]: treesize reduction 62, result has 62.4 percent of original size [2022-01-18 01:53:08,004 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 813 treesize of output 809 [2022-01-18 01:53:08,045 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-01-18 01:53:08,046 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 694 treesize of output 672 [2022-01-18 01:53:08,090 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-01-18 01:53:08,091 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 620 treesize of output 524 [2022-01-18 01:53:29,564 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:53:29,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380623101] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:53:29,565 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:53:29,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 43, 37] total 88 [2022-01-18 01:53:29,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214390277] [2022-01-18 01:53:29,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:53:29,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2022-01-18 01:53:29,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:53:29,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2022-01-18 01:53:29,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=704, Invalid=6881, Unknown=71, NotChecked=0, Total=7656 [2022-01-18 01:53:29,567 INFO L87 Difference]: Start difference. First operand 25195 states and 72931 transitions. Second operand has 88 states, 88 states have (on average 4.329545454545454) internal successors, (381), 88 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:54:11,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:54:11,360 INFO L93 Difference]: Finished difference Result 65789 states and 186296 transitions. [2022-01-18 01:54:11,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 350 states. [2022-01-18 01:54:11,361 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 4.329545454545454) internal successors, (381), 88 states have internal predecessors, (381), 0 states have call successors, (0), 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 146 [2022-01-18 01:54:11,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:54:11,499 INFO L225 Difference]: With dead ends: 65789 [2022-01-18 01:54:11,499 INFO L226 Difference]: Without dead ends: 62411 [2022-01-18 01:54:11,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 717 GetRequests, 259 SyntacticMatches, 33 SemanticMatches, 425 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 77124 ImplicationChecksByTransitivity, 39.4s TimeCoverageRelationStatistics Valid=14913, Invalid=166918, Unknown=71, NotChecked=0, Total=181902 [2022-01-18 01:54:11,507 INFO L933 BasicCegarLoop]: 572 mSDtfsCounter, 4173 mSDsluCounter, 25161 mSDsCounter, 0 mSdLazyCounter, 8313 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4173 SdHoareTripleChecker+Valid, 24915 SdHoareTripleChecker+Invalid, 26096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 8313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17500 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-01-18 01:54:11,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4173 Valid, 24915 Invalid, 26096 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [283 Valid, 8313 Invalid, 0 Unknown, 17500 Unchecked, 3.6s Time] [2022-01-18 01:54:11,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62411 states. [2022-01-18 01:54:12,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62411 to 26720. [2022-01-18 01:54:12,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26720 states, 26719 states have (on average 2.891313297653355) internal successors, (77253), 26719 states have internal predecessors, (77253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:54:12,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26720 states to 26720 states and 77253 transitions. [2022-01-18 01:54:12,325 INFO L78 Accepts]: Start accepts. Automaton has 26720 states and 77253 transitions. Word has length 146 [2022-01-18 01:54:12,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:54:12,325 INFO L470 AbstractCegarLoop]: Abstraction has 26720 states and 77253 transitions. [2022-01-18 01:54:12,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 4.329545454545454) internal successors, (381), 88 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:54:12,326 INFO L276 IsEmpty]: Start isEmpty. Operand 26720 states and 77253 transitions. [2022-01-18 01:54:12,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-18 01:54:12,370 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:54:12,371 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-18 01:54:12,388 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-01-18 01:54:12,581 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,SelfDestructingSolverStorable13 [2022-01-18 01:54:12,581 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:54:12,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:54:12,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1850535755, now seen corresponding path program 7 times [2022-01-18 01:54:12,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:54:12,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456264654] [2022-01-18 01:54:12,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:54:12,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:54:12,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:54:13,254 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:54:13,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:54:13,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456264654] [2022-01-18 01:54:13,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456264654] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:54:13,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347152124] [2022-01-18 01:54:13,254 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 01:54:13,255 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:54:13,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:54:13,256 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 01:54:13,257 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 01:54:13,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:54:13,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 77 conjunts are in the unsatisfiable core [2022-01-18 01:54:13,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:54:13,837 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 01:54:13,988 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 01:54:14,334 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 01:54:14,410 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 01:54:15,400 INFO L353 Elim1Store]: treesize reduction 48, result has 5.9 percent of original size [2022-01-18 01:54:15,400 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 22 [2022-01-18 01:54:15,474 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:54:15,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:54:23,352 INFO L353 Elim1Store]: treesize reduction 28, result has 54.8 percent of original size [2022-01-18 01:54:23,353 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 226 treesize of output 145 [2022-01-18 01:54:23,417 INFO L353 Elim1Store]: treesize reduction 62, result has 62.4 percent of original size [2022-01-18 01:54:23,418 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 821 treesize of output 815 [2022-01-18 01:54:23,459 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-01-18 01:54:23,460 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 700 treesize of output 676 [2022-01-18 01:54:23,507 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-01-18 01:54:23,507 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 624 treesize of output 524 [2022-01-18 01:54:29,419 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:54:29,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347152124] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:54:29,419 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:54:29,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 37, 35] total 93 [2022-01-18 01:54:29,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161450169] [2022-01-18 01:54:29,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:54:29,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2022-01-18 01:54:29,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:54:29,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2022-01-18 01:54:29,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=840, Invalid=7647, Unknown=69, NotChecked=0, Total=8556 [2022-01-18 01:54:29,421 INFO L87 Difference]: Start difference. First operand 26720 states and 77253 transitions. Second operand has 93 states, 93 states have (on average 4.096774193548387) internal successors, (381), 93 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:55:04,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:55:04,404 INFO L93 Difference]: Finished difference Result 73704 states and 211122 transitions. [2022-01-18 01:55:04,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 288 states. [2022-01-18 01:55:04,405 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 4.096774193548387) internal successors, (381), 93 states have internal predecessors, (381), 0 states have call successors, (0), 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 146 [2022-01-18 01:55:04,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:55:04,573 INFO L225 Difference]: With dead ends: 73704 [2022-01-18 01:55:04,573 INFO L226 Difference]: Without dead ends: 72194 [2022-01-18 01:55:04,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 235 SyntacticMatches, 15 SemanticMatches, 367 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57261 ImplicationChecksByTransitivity, 33.9s TimeCoverageRelationStatistics Valid=15237, Invalid=120486, Unknown=69, NotChecked=0, Total=135792 [2022-01-18 01:55:04,579 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 4686 mSDsluCounter, 14002 mSDsCounter, 0 mSdLazyCounter, 6121 mSolverCounterSat, 612 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4686 SdHoareTripleChecker+Valid, 13825 SdHoareTripleChecker+Invalid, 16668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 612 IncrementalHoareTripleChecker+Valid, 6121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9935 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-01-18 01:55:04,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4686 Valid, 13825 Invalid, 16668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [612 Valid, 6121 Invalid, 0 Unknown, 9935 Unchecked, 3.0s Time] [2022-01-18 01:55:04,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72194 states. [2022-01-18 01:55:05,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72194 to 35674. [2022-01-18 01:55:05,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35674 states, 35673 states have (on average 2.9222381072519834) internal successors, (104245), 35673 states have internal predecessors, (104245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:55:05,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35674 states to 35674 states and 104245 transitions. [2022-01-18 01:55:05,656 INFO L78 Accepts]: Start accepts. Automaton has 35674 states and 104245 transitions. Word has length 146 [2022-01-18 01:55:05,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:55:05,657 INFO L470 AbstractCegarLoop]: Abstraction has 35674 states and 104245 transitions. [2022-01-18 01:55:05,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 4.096774193548387) internal successors, (381), 93 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:55:05,657 INFO L276 IsEmpty]: Start isEmpty. Operand 35674 states and 104245 transitions. [2022-01-18 01:55:05,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-18 01:55:05,716 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:55:05,716 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-18 01:55:05,733 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 01:55:05,920 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,SelfDestructingSolverStorable14 [2022-01-18 01:55:05,920 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:55:05,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:55:05,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1604798359, now seen corresponding path program 8 times [2022-01-18 01:55:05,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:55:05,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203028746] [2022-01-18 01:55:05,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:55:05,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:55:05,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:55:07,367 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:55:07,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:55:07,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203028746] [2022-01-18 01:55:07,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203028746] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:55:07,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389882646] [2022-01-18 01:55:07,368 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 01:55:07,368 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:55:07,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:55:07,369 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 01:55:07,370 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 01:55:07,448 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 01:55:07,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:55:07,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 63 conjunts are in the unsatisfiable core [2022-01-18 01:55:07,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:55:08,998 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-18 01:55:08,998 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 15 [2022-01-18 01:55:09,083 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:55:09,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:55:10,169 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-01-18 01:55:10,169 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 77 treesize of output 78 [2022-01-18 01:55:11,640 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:55:11,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389882646] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:55:11,641 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:55:11,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 28, 28] total 87 [2022-01-18 01:55:11,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064592222] [2022-01-18 01:55:11,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:55:11,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-01-18 01:55:11,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:55:11,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-01-18 01:55:11,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=812, Invalid=6670, Unknown=0, NotChecked=0, Total=7482 [2022-01-18 01:55:11,643 INFO L87 Difference]: Start difference. First operand 35674 states and 104245 transitions. Second operand has 87 states, 87 states have (on average 4.448275862068965) internal successors, (387), 87 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:56:11,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:56:11,269 INFO L93 Difference]: Finished difference Result 110507 states and 317649 transitions. [2022-01-18 01:56:11,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 561 states. [2022-01-18 01:56:11,279 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 4.448275862068965) internal successors, (387), 87 states have internal predecessors, (387), 0 states have call successors, (0), 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 146 [2022-01-18 01:56:11,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:56:11,709 INFO L225 Difference]: With dead ends: 110507 [2022-01-18 01:56:11,709 INFO L226 Difference]: Without dead ends: 107526 [2022-01-18 01:56:11,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 881 GetRequests, 245 SyntacticMatches, 1 SemanticMatches, 635 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183811 ImplicationChecksByTransitivity, 53.6s TimeCoverageRelationStatistics Valid=36842, Invalid=368290, Unknown=0, NotChecked=0, Total=405132 [2022-01-18 01:56:11,724 INFO L933 BasicCegarLoop]: 403 mSDtfsCounter, 6877 mSDsluCounter, 17246 mSDsCounter, 0 mSdLazyCounter, 11291 mSolverCounterSat, 1109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6877 SdHoareTripleChecker+Valid, 17275 SdHoareTripleChecker+Invalid, 12400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1109 IncrementalHoareTripleChecker+Valid, 11291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:56:11,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6877 Valid, 17275 Invalid, 12400 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1109 Valid, 11291 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-01-18 01:56:11,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107526 states. [2022-01-18 01:56:13,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107526 to 41332. [2022-01-18 01:56:13,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41332 states, 41331 states have (on average 2.929254070794319) internal successors, (121069), 41331 states have internal predecessors, (121069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:56:13,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41332 states to 41332 states and 121069 transitions. [2022-01-18 01:56:13,232 INFO L78 Accepts]: Start accepts. Automaton has 41332 states and 121069 transitions. Word has length 146 [2022-01-18 01:56:13,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:56:13,233 INFO L470 AbstractCegarLoop]: Abstraction has 41332 states and 121069 transitions. [2022-01-18 01:56:13,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 4.448275862068965) internal successors, (387), 87 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:56:13,233 INFO L276 IsEmpty]: Start isEmpty. Operand 41332 states and 121069 transitions. [2022-01-18 01:56:13,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-18 01:56:13,300 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:56:13,300 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-18 01:56:13,318 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 01:56:13,503 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,SelfDestructingSolverStorable15 [2022-01-18 01:56:13,503 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:56:13,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:56:13,504 INFO L85 PathProgramCache]: Analyzing trace with hash -949066649, now seen corresponding path program 9 times [2022-01-18 01:56:13,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:56:13,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432311201] [2022-01-18 01:56:13,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:56:13,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:56:13,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:56:13,766 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 01:56:13,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:56:13,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432311201] [2022-01-18 01:56:13,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432311201] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:56:13,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028177302] [2022-01-18 01:56:13,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 01:56:13,767 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:56:13,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:56:13,768 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 01:56:13,769 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 01:56:13,852 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 01:56:13,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:56:13,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 83 conjunts are in the unsatisfiable core [2022-01-18 01:56:13,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:56:14,584 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 01:56:14,856 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 01:56:14,918 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 01:56:16,078 INFO L353 Elim1Store]: treesize reduction 37, result has 27.5 percent of original size [2022-01-18 01:56:16,079 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 29 [2022-01-18 01:56:16,389 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:56:16,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:56:38,207 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 01:56:38,208 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 182 treesize of output 122 [2022-01-18 01:56:38,272 INFO L353 Elim1Store]: treesize reduction 73, result has 24.7 percent of original size [2022-01-18 01:56:38,272 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 784 treesize of output 711 [2022-01-18 01:56:38,302 INFO L353 Elim1Store]: treesize reduction 80, result has 17.5 percent of original size [2022-01-18 01:56:38,303 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 688 treesize of output 632 [2022-01-18 01:56:38,333 INFO L353 Elim1Store]: treesize reduction 80, result has 17.5 percent of original size [2022-01-18 01:56:38,334 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 616 treesize of output 488 [2022-01-18 01:56:40,011 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:56:40,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028177302] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:56:40,011 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:56:40,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 43, 40] total 91 [2022-01-18 01:56:40,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138251790] [2022-01-18 01:56:40,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:56:40,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2022-01-18 01:56:40,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:56:40,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2022-01-18 01:56:40,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1162, Invalid=6990, Unknown=38, NotChecked=0, Total=8190 [2022-01-18 01:56:40,014 INFO L87 Difference]: Start difference. First operand 41332 states and 121069 transitions. Second operand has 91 states, 91 states have (on average 4.197802197802198) internal successors, (382), 91 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:21,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:58:21,559 INFO L93 Difference]: Finished difference Result 134259 states and 386332 transitions. [2022-01-18 01:58:21,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 562 states. [2022-01-18 01:58:21,559 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 4.197802197802198) internal successors, (382), 91 states have internal predecessors, (382), 0 states have call successors, (0), 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 146 [2022-01-18 01:58:21,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:58:21,984 INFO L225 Difference]: With dead ends: 134259 [2022-01-18 01:58:21,984 INFO L226 Difference]: Without dead ends: 129767 [2022-01-18 01:58:21,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1029 GetRequests, 344 SyntacticMatches, 58 SemanticMatches, 627 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186784 ImplicationChecksByTransitivity, 92.3s TimeCoverageRelationStatistics Valid=37073, Invalid=357888, Unknown=51, NotChecked=0, Total=395012 [2022-01-18 01:58:21,997 INFO L933 BasicCegarLoop]: 839 mSDtfsCounter, 8432 mSDsluCounter, 31285 mSDsCounter, 0 mSdLazyCounter, 10026 mSolverCounterSat, 557 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8432 SdHoareTripleChecker+Valid, 31299 SdHoareTripleChecker+Invalid, 45380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 557 IncrementalHoareTripleChecker+Valid, 10026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34797 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-01-18 01:58:21,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8432 Valid, 31299 Invalid, 45380 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [557 Valid, 10026 Invalid, 0 Unknown, 34797 Unchecked, 4.9s Time] [2022-01-18 01:58:22,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129767 states. [2022-01-18 01:58:23,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129767 to 51271. [2022-01-18 01:58:23,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51271 states, 51270 states have (on average 2.930739223717574) internal successors, (150259), 51270 states have internal predecessors, (150259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:23,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51271 states to 51271 states and 150259 transitions. [2022-01-18 01:58:23,763 INFO L78 Accepts]: Start accepts. Automaton has 51271 states and 150259 transitions. Word has length 146 [2022-01-18 01:58:23,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:58:23,764 INFO L470 AbstractCegarLoop]: Abstraction has 51271 states and 150259 transitions. [2022-01-18 01:58:23,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 4.197802197802198) internal successors, (382), 91 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:23,764 INFO L276 IsEmpty]: Start isEmpty. Operand 51271 states and 150259 transitions. [2022-01-18 01:58:23,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-18 01:58:23,859 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:58:23,859 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-18 01:58:23,877 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 01:58:24,065 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,SelfDestructingSolverStorable16 [2022-01-18 01:58:24,065 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:58:24,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:58:24,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1475611067, now seen corresponding path program 10 times [2022-01-18 01:58:24,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:58:24,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394301514] [2022-01-18 01:58:24,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:58:24,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:58:24,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:58:24,339 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 01:58:24,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:58:24,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394301514] [2022-01-18 01:58:24,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394301514] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:58:24,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488469152] [2022-01-18 01:58:24,340 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 01:58:24,340 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:58:24,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:58:24,341 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 01:58:24,341 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 01:58:24,412 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 01:58:24,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:58:24,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 85 conjunts are in the unsatisfiable core [2022-01-18 01:58:24,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:58:24,443 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 01:58:24,466 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-01-18 01:58:24,466 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-01-18 01:58:24,743 INFO L353 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-01-18 01:58:24,743 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2022-01-18 01:58:24,864 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 01:58:24,994 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 01:58:25,265 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 01:58:25,514 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 01:58:26,429 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-18 01:58:26,430 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 19 [2022-01-18 01:58:26,490 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:26,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:58:29,182 INFO L353 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-01-18 01:58:29,183 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 233 treesize of output 138 [2022-01-18 01:58:29,216 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-01-18 01:58:29,217 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 384 treesize of output 385 [2022-01-18 01:58:29,250 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-01-18 01:58:29,251 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 333 treesize of output 307 [2022-01-18 01:58:29,283 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-01-18 01:58:29,284 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 255 treesize of output 268 [2022-01-18 01:58:34,430 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:34,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488469152] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:58:34,430 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:58:34,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 37, 37] total 81 [2022-01-18 01:58:34,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858316635] [2022-01-18 01:58:34,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:58:34,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-01-18 01:58:34,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:58:34,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-01-18 01:58:34,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=893, Invalid=5528, Unknown=59, NotChecked=0, Total=6480 [2022-01-18 01:58:34,432 INFO L87 Difference]: Start difference. First operand 51271 states and 150259 transitions. Second operand has 81 states, 81 states have (on average 4.617283950617284) internal successors, (374), 81 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:36,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:59:36,583 INFO L93 Difference]: Finished difference Result 118954 states and 343993 transitions. [2022-01-18 01:59:36,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 645 states. [2022-01-18 01:59:36,584 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 4.617283950617284) internal successors, (374), 81 states have internal predecessors, (374), 0 states have call successors, (0), 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 146 [2022-01-18 01:59:36,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:59:36,994 INFO L225 Difference]: With dead ends: 118954 [2022-01-18 01:59:36,994 INFO L226 Difference]: Without dead ends: 117942 [2022-01-18 01:59:37,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 985 GetRequests, 260 SyntacticMatches, 10 SemanticMatches, 715 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231275 ImplicationChecksByTransitivity, 55.4s TimeCoverageRelationStatistics Valid=34550, Invalid=478763, Unknown=59, NotChecked=0, Total=513372 [2022-01-18 01:59:37,015 INFO L933 BasicCegarLoop]: 576 mSDtfsCounter, 7278 mSDsluCounter, 21986 mSDsCounter, 0 mSdLazyCounter, 9890 mSolverCounterSat, 856 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7278 SdHoareTripleChecker+Valid, 22098 SdHoareTripleChecker+Invalid, 22121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 856 IncrementalHoareTripleChecker+Valid, 9890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11375 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-01-18 01:59:37,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7278 Valid, 22098 Invalid, 22121 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [856 Valid, 9890 Invalid, 0 Unknown, 11375 Unchecked, 5.7s Time] [2022-01-18 01:59:37,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117942 states. [2022-01-18 01:59:38,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117942 to 53936. [2022-01-18 01:59:38,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53936 states, 53935 states have (on average 2.933290071382219) internal successors, (158207), 53935 states have internal predecessors, (158207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:38,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53936 states to 53936 states and 158207 transitions. [2022-01-18 01:59:38,803 INFO L78 Accepts]: Start accepts. Automaton has 53936 states and 158207 transitions. Word has length 146 [2022-01-18 01:59:38,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:59:38,803 INFO L470 AbstractCegarLoop]: Abstraction has 53936 states and 158207 transitions. [2022-01-18 01:59:38,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 4.617283950617284) internal successors, (374), 81 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:38,804 INFO L276 IsEmpty]: Start isEmpty. Operand 53936 states and 158207 transitions. [2022-01-18 01:59:38,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-18 01:59:38,904 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:59:38,905 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-18 01:59:38,921 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 01:59:39,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-01-18 01:59:39,105 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:59:39,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:59:39,106 INFO L85 PathProgramCache]: Analyzing trace with hash -161174420, now seen corresponding path program 3 times [2022-01-18 01:59:39,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:59:39,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076237239] [2022-01-18 01:59:39,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:59:39,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:59:39,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:59:39,158 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-18 01:59:39,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:59:39,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076237239] [2022-01-18 01:59:39,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076237239] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:59:39,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:59:39,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 01:59:39,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021855104] [2022-01-18 01:59:39,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:59:39,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 01:59:39,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:59:39,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 01:59:39,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 01:59:39,160 INFO L87 Difference]: Start difference. First operand 53936 states and 158207 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:39,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:59:39,298 INFO L93 Difference]: Finished difference Result 32199 states and 89406 transitions. [2022-01-18 01:59:39,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 01:59:39,299 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 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 146 [2022-01-18 01:59:39,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:59:39,358 INFO L225 Difference]: With dead ends: 32199 [2022-01-18 01:59:39,358 INFO L226 Difference]: Without dead ends: 32199 [2022-01-18 01:59:39,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 01:59:39,359 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 66 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 01:59:39,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 369 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 01:59:39,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32199 states. [2022-01-18 01:59:39,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32199 to 25212. [2022-01-18 01:59:39,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25212 states, 25211 states have (on average 2.794732458054024) internal successors, (70458), 25211 states have internal predecessors, (70458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:40,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25212 states to 25212 states and 70458 transitions. [2022-01-18 01:59:40,044 INFO L78 Accepts]: Start accepts. Automaton has 25212 states and 70458 transitions. Word has length 146 [2022-01-18 01:59:40,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:59:40,044 INFO L470 AbstractCegarLoop]: Abstraction has 25212 states and 70458 transitions. [2022-01-18 01:59:40,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:40,044 INFO L276 IsEmpty]: Start isEmpty. Operand 25212 states and 70458 transitions. [2022-01-18 01:59:40,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-01-18 01:59:40,079 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:59:40,079 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-18 01:59:40,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-18 01:59:40,080 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:59:40,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:59:40,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1191278764, now seen corresponding path program 11 times [2022-01-18 01:59:40,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:59:40,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146711947] [2022-01-18 01:59:40,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:59:40,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:59:40,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:59:40,132 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-18 01:59:40,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:59:40,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146711947] [2022-01-18 01:59:40,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146711947] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:59:40,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800115781] [2022-01-18 01:59:40,133 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 01:59:40,133 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:59:40,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:59:40,134 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 01:59:40,135 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 01:59:40,210 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 01:59:40,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:59:40,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 01:59:40,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:59:40,416 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-01-18 01:59:40,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:59:40,614 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-01-18 01:59:40,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800115781] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:59:40,614 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:59:40,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 10 [2022-01-18 01:59:40,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040296400] [2022-01-18 01:59:40,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:59:40,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 01:59:40,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:59:40,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 01:59:40,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-01-18 01:59:40,616 INFO L87 Difference]: Start difference. First operand 25212 states and 70458 transitions. Second operand has 10 states, 10 states have (on average 19.1) internal successors, (191), 10 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:41,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:59:41,050 INFO L93 Difference]: Finished difference Result 38770 states and 108506 transitions. [2022-01-18 01:59:41,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 01:59:41,050 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 19.1) internal successors, (191), 10 states have internal predecessors, (191), 0 states have call successors, (0), 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 153 [2022-01-18 01:59:41,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:59:41,123 INFO L225 Difference]: With dead ends: 38770 [2022-01-18 01:59:41,123 INFO L226 Difference]: Without dead ends: 38770 [2022-01-18 01:59:41,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 314 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2022-01-18 01:59:41,124 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 469 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:59:41,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [469 Valid, 816 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:59:41,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38770 states. [2022-01-18 01:59:41,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38770 to 24876. [2022-01-18 01:59:41,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24876 states, 24875 states have (on average 2.7943718592964824) internal successors, (69510), 24875 states have internal predecessors, (69510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:41,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24876 states to 24876 states and 69510 transitions. [2022-01-18 01:59:41,742 INFO L78 Accepts]: Start accepts. Automaton has 24876 states and 69510 transitions. Word has length 153 [2022-01-18 01:59:41,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:59:41,742 INFO L470 AbstractCegarLoop]: Abstraction has 24876 states and 69510 transitions. [2022-01-18 01:59:41,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 19.1) internal successors, (191), 10 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:41,742 INFO L276 IsEmpty]: Start isEmpty. Operand 24876 states and 69510 transitions. [2022-01-18 01:59:41,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-01-18 01:59:41,772 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:59:41,773 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-18 01:59:41,790 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 01:59:41,983 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 01:59:41,983 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:59:41,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:59:41,984 INFO L85 PathProgramCache]: Analyzing trace with hash -208527602, now seen corresponding path program 12 times [2022-01-18 01:59:41,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:59:41,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991900550] [2022-01-18 01:59:41,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:59:41,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:59:41,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:59:42,038 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-18 01:59:42,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:59:42,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991900550] [2022-01-18 01:59:42,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991900550] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:59:42,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072239921] [2022-01-18 01:59:42,038 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 01:59:42,038 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:59:42,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:59:42,039 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 01:59:42,040 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 01:59:42,221 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 01:59:42,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:59:42,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-18 01:59:42,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:59:42,799 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 22 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:42,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:59:43,572 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 22 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:43,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072239921] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:59:43,572 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:59:43,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 16, 16] total 34 [2022-01-18 01:59:43,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528069134] [2022-01-18 01:59:43,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:59:43,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 01:59:43,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:59:43,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 01:59:43,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=931, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 01:59:43,573 INFO L87 Difference]: Start difference. First operand 24876 states and 69510 transitions. Second operand has 34 states, 34 states have (on average 9.882352941176471) internal successors, (336), 34 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:45,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:59:45,771 INFO L93 Difference]: Finished difference Result 37277 states and 101586 transitions. [2022-01-18 01:59:45,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 01:59:45,771 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 9.882352941176471) internal successors, (336), 34 states have internal predecessors, (336), 0 states have call successors, (0), 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 153 [2022-01-18 01:59:45,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:59:45,834 INFO L225 Difference]: With dead ends: 37277 [2022-01-18 01:59:45,834 INFO L226 Difference]: Without dead ends: 31376 [2022-01-18 01:59:45,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1563 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1498, Invalid=4982, Unknown=0, NotChecked=0, Total=6480 [2022-01-18 01:59:45,835 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 2594 mSDsluCounter, 3240 mSDsCounter, 0 mSdLazyCounter, 1262 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2594 SdHoareTripleChecker+Valid, 3338 SdHoareTripleChecker+Invalid, 1511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 1262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 01:59:45,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2594 Valid, 3338 Invalid, 1511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 1262 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 01:59:45,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31376 states. [2022-01-18 01:59:46,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31376 to 16783. [2022-01-18 01:59:46,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16783 states, 16782 states have (on average 2.797938267191038) internal successors, (46955), 16782 states have internal predecessors, (46955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:46,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16783 states to 16783 states and 46955 transitions. [2022-01-18 01:59:46,257 INFO L78 Accepts]: Start accepts. Automaton has 16783 states and 46955 transitions. Word has length 153 [2022-01-18 01:59:46,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:59:46,258 INFO L470 AbstractCegarLoop]: Abstraction has 16783 states and 46955 transitions. [2022-01-18 01:59:46,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 9.882352941176471) internal successors, (336), 34 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:46,258 INFO L276 IsEmpty]: Start isEmpty. Operand 16783 states and 46955 transitions. [2022-01-18 01:59:46,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-01-18 01:59:46,281 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:59:46,281 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-18 01:59:46,297 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-01-18 01:59:46,488 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 01:59:46,488 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:59:46,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:59:46,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1597717421, now seen corresponding path program 13 times [2022-01-18 01:59:46,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:59:46,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430882460] [2022-01-18 01:59:46,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:59:46,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:59:46,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:59:48,251 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:48,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:59:48,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430882460] [2022-01-18 01:59:48,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430882460] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:59:48,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766874300] [2022-01-18 01:59:48,251 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 01:59:48,251 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:59:48,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:59:48,252 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 01:59:48,253 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 01:59:48,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:59:48,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 68 conjunts are in the unsatisfiable core [2022-01-18 01:59:48,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:59:50,028 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-18 01:59:50,028 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 15 [2022-01-18 01:59:50,107 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:50,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:59:51,059 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-01-18 01:59:51,059 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 77 treesize of output 78 [2022-01-18 01:59:52,933 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:52,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766874300] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:59:52,933 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:59:52,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 30, 30] total 90 [2022-01-18 01:59:52,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791983131] [2022-01-18 01:59:52,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:59:52,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-01-18 01:59:52,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:59:52,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-01-18 01:59:52,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=941, Invalid=7069, Unknown=0, NotChecked=0, Total=8010 [2022-01-18 01:59:52,936 INFO L87 Difference]: Start difference. First operand 16783 states and 46955 transitions. Second operand has 90 states, 90 states have (on average 4.466666666666667) internal successors, (402), 90 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:22,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:00:22,936 INFO L93 Difference]: Finished difference Result 51857 states and 144363 transitions. [2022-01-18 02:00:22,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 307 states. [2022-01-18 02:00:22,936 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 4.466666666666667) internal successors, (402), 90 states have internal predecessors, (402), 0 states have call successors, (0), 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 153 [2022-01-18 02:00:22,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:00:23,044 INFO L225 Difference]: With dead ends: 51857 [2022-01-18 02:00:23,044 INFO L226 Difference]: Without dead ends: 50686 [2022-01-18 02:00:23,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 643 GetRequests, 256 SyntacticMatches, 4 SemanticMatches, 383 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61826 ImplicationChecksByTransitivity, 27.9s TimeCoverageRelationStatistics Valid=15021, Invalid=132819, Unknown=0, NotChecked=0, Total=147840 [2022-01-18 02:00:23,053 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 4976 mSDsluCounter, 11500 mSDsCounter, 0 mSdLazyCounter, 7430 mSolverCounterSat, 511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4976 SdHoareTripleChecker+Valid, 11534 SdHoareTripleChecker+Invalid, 7941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 7430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-01-18 02:00:23,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4976 Valid, 11534 Invalid, 7941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [511 Valid, 7430 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-01-18 02:00:23,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50686 states. [2022-01-18 02:00:23,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50686 to 18986. [2022-01-18 02:00:23,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18986 states, 18985 states have (on average 2.7890439820911244) internal successors, (52950), 18985 states have internal predecessors, (52950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:23,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18986 states to 18986 states and 52950 transitions. [2022-01-18 02:00:23,620 INFO L78 Accepts]: Start accepts. Automaton has 18986 states and 52950 transitions. Word has length 153 [2022-01-18 02:00:23,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:00:23,620 INFO L470 AbstractCegarLoop]: Abstraction has 18986 states and 52950 transitions. [2022-01-18 02:00:23,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 4.466666666666667) internal successors, (402), 90 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:23,621 INFO L276 IsEmpty]: Start isEmpty. Operand 18986 states and 52950 transitions. [2022-01-18 02:00:23,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-01-18 02:00:23,646 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:00:23,646 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-18 02:00:23,662 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 02:00:23,846 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 02:00:23,847 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:00:23,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:00:23,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1909981367, now seen corresponding path program 14 times [2022-01-18 02:00:23,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:00:23,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480971331] [2022-01-18 02:00:23,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:00:23,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:00:23,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:00:24,083 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-18 02:00:24,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:00:24,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480971331] [2022-01-18 02:00:24,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480971331] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:00:24,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065933046] [2022-01-18 02:00:24,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:00:24,084 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:00:24,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:00:24,085 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 02:00:24,085 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 02:00:24,172 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:00:24,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:00:24,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 86 conjunts are in the unsatisfiable core [2022-01-18 02:00:24,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:00:24,200 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 02:00:24,226 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-01-18 02:00:24,226 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-01-18 02:00:24,576 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 02:00:24,577 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-01-18 02:00:24,982 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 02:00:25,282 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 02:00:25,351 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 02:00:26,259 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-18 02:00:26,259 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 15 [2022-01-18 02:00:26,324 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:26,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:00:28,691 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:00:28,691 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 185 treesize of output 125 [2022-01-18 02:00:28,723 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-01-18 02:00:28,724 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 384 treesize of output 385 [2022-01-18 02:00:28,758 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-01-18 02:00:28,758 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 333 treesize of output 307 [2022-01-18 02:00:28,791 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-01-18 02:00:28,791 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 255 treesize of output 268 [2022-01-18 02:00:35,299 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:35,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065933046] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:00:35,299 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:00:35,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 39, 39] total 84 [2022-01-18 02:00:35,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845946768] [2022-01-18 02:00:35,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:00:35,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-01-18 02:00:35,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:00:35,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-01-18 02:00:35,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=915, Invalid=6000, Unknown=57, NotChecked=0, Total=6972 [2022-01-18 02:00:35,301 INFO L87 Difference]: Start difference. First operand 18986 states and 52950 transitions. Second operand has 84 states, 84 states have (on average 4.619047619047619) internal successors, (388), 84 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2022-01-18 02:00:41,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-01-18 02:00:41,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 242 SyntacticMatches, 6 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9162 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=3567, Invalid=24432, Unknown=57, NotChecked=0, Total=28056 [2022-01-18 02:00:41,841 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 1602 mSDsluCounter, 6992 mSDsCounter, 0 mSdLazyCounter, 2900 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1602 SdHoareTripleChecker+Valid, 7171 SdHoareTripleChecker+Invalid, 4068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 2900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1093 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:00:41,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1602 Valid, 7171 Invalid, 4068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 2900 Invalid, 0 Unknown, 1093 Unchecked, 1.3s Time] [2022-01-18 02:00:41,842 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-18 02:00:41,859 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 02:00:41,859 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 02:00:41,861 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 02:00:42,043 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 02:00:42,044 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (18986states) and FLOYD_HOARE automaton (currently 101 states, 84 states before enhancement),while ReachableStatesComputation was computing reachable states (2746 states constructed, input type IntersectNwa). [2022-01-18 02:00:42,045 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-18 02:00:42,045 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-18 02:00:42,048 INFO L732 BasicCegarLoop]: Path program histogram: [14, 3, 2, 1, 1, 1, 1] [2022-01-18 02:00:42,049 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 02:00:42,049 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 02:00:42,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 02:00:42 BasicIcfg [2022-01-18 02:00:42,050 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 02:00:42,051 INFO L158 Benchmark]: Toolchain (without parser) took 779928.69ms. Allocated memory was 367.0MB in the beginning and 4.9GB in the end (delta: 4.6GB). Free memory was 313.0MB in the beginning and 3.4GB in the end (delta: -3.1GB). Peak memory consumption was 1.5GB. Max. memory is 16.0GB. [2022-01-18 02:00:42,051 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 367.0MB. Free memory is still 330.0MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 02:00:42,051 INFO L158 Benchmark]: CACSL2BoogieTranslator took 179.15ms. Allocated memory was 367.0MB in the beginning and 455.1MB in the end (delta: 88.1MB). Free memory was 312.9MB in the beginning and 428.9MB in the end (delta: -116.0MB). Peak memory consumption was 6.5MB. Max. memory is 16.0GB. [2022-01-18 02:00:42,051 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.30ms. Allocated memory is still 455.1MB. Free memory was 428.9MB in the beginning and 426.8MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 02:00:42,051 INFO L158 Benchmark]: Boogie Preprocessor took 20.58ms. Allocated memory is still 455.1MB. Free memory was 426.8MB in the beginning and 424.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 02:00:42,051 INFO L158 Benchmark]: RCFGBuilder took 349.90ms. Allocated memory is still 455.1MB. Free memory was 424.8MB in the beginning and 404.8MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2022-01-18 02:00:42,051 INFO L158 Benchmark]: TraceAbstraction took 779341.83ms. Allocated memory was 455.1MB in the beginning and 4.9GB in the end (delta: 4.5GB). Free memory was 403.8MB in the beginning and 3.4GB in the end (delta: -3.0GB). Peak memory consumption was 1.5GB. Max. memory is 16.0GB. [2022-01-18 02:00:42,052 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 367.0MB. Free memory is still 330.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 179.15ms. Allocated memory was 367.0MB in the beginning and 455.1MB in the end (delta: 88.1MB). Free memory was 312.9MB in the beginning and 428.9MB in the end (delta: -116.0MB). Peak memory consumption was 6.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 32.30ms. Allocated memory is still 455.1MB. Free memory was 428.9MB in the beginning and 426.8MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 20.58ms. Allocated memory is still 455.1MB. Free memory was 426.8MB in the beginning and 424.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 349.90ms. Allocated memory is still 455.1MB. Free memory was 424.8MB in the beginning and 404.8MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 779341.83ms. Allocated memory was 455.1MB in the beginning and 4.9GB in the end (delta: 4.5GB). Free memory was 403.8MB in the beginning and 3.4GB in the end (delta: -3.0GB). Peak memory consumption was 1.5GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 105]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (18986states) and FLOYD_HOARE automaton (currently 101 states, 84 states before enhancement),while ReachableStatesComputation was computing reachable states (2746 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (18986states) and FLOYD_HOARE automaton (currently 101 states, 84 states before enhancement),while ReachableStatesComputation was computing reachable states (2746 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (18986states) and FLOYD_HOARE automaton (currently 101 states, 84 states before enhancement),while ReachableStatesComputation was computing reachable states (2746 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 168 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 779.2s, OverallIterations: 23, TraceHistogramMax: 3, PathProgramHistogramMax: 14, EmptinessCheckTime: 0.7s, AutomataDifference: 565.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 72772 SdHoareTripleChecker+Valid, 48.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 72772 mSDsluCounter, 240239 SdHoareTripleChecker+Invalid, 41.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 122368 IncrementalHoareTripleChecker+Unchecked, 240624 mSDsCounter, 6770 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 95464 IncrementalHoareTripleChecker+Invalid, 224602 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6770 mSolverCounterUnsat, 7374 mSDtfsCounter, 95464 mSolverCounterSat, 0.7s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10280 GetRequests, 4372 SyntacticMatches, 208 SemanticMatches, 5700 ConstructedPredicates, 0 IntricatePredicates, 9 DeprecatedPredicates, 1271355 ImplicationChecksByTransitivity, 522.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53936occurred in iteration=18, InterpolantAutomatonStates: 4704, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 12.3s AutomataMinimizationTime, 22 MinimizatonAttempts, 487843 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 195.2s InterpolantComputationTime, 5506 NumberOfCodeBlocks, 5385 NumberOfCodeBlocksAsserted, 58 NumberOfCheckSat, 7880 ConstructedInterpolants, 578 QuantifiedInterpolants, 159875 SizeOfPredicates, 596 NumberOfNonLiveVariables, 4970 ConjunctsInSsa, 1047 ConjunctsInUnsatCore, 57 InterpolantComputations, 6 PerfectInterpolantSequences, 389/1666 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown