/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-SP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/thin002_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-22 02:24:24,610 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-22 02:24:24,614 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-22 02:24:24,662 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-22 02:24:24,663 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-22 02:24:24,674 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-22 02:24:24,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-22 02:24:24,679 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-22 02:24:24,681 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-22 02:24:24,685 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-22 02:24:24,686 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-22 02:24:24,688 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-22 02:24:24,688 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-22 02:24:24,691 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-22 02:24:24,693 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-22 02:24:24,695 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-22 02:24:24,696 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-22 02:24:24,697 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-22 02:24:24,698 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-22 02:24:24,706 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-22 02:24:24,708 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-22 02:24:24,709 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-22 02:24:24,710 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-22 02:24:24,711 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-22 02:24:24,717 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-22 02:24:24,717 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-22 02:24:24,718 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-22 02:24:24,721 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-22 02:24:24,721 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-22 02:24:24,723 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-22 02:24:24,723 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-22 02:24:24,725 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-22 02:24:24,725 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-22 02:24:24,726 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-22 02:24:24,727 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-22 02:24:24,727 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-22 02:24:24,728 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-22 02:24:24,728 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-22 02:24:24,728 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-22 02:24:24,731 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-22 02:24:24,732 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-22 02:24:24,733 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-SP.epf [2020-10-22 02:24:24,777 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-22 02:24:24,777 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-22 02:24:24,779 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-22 02:24:24,779 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-22 02:24:24,779 INFO L138 SettingsManager]: * Use SBE=true [2020-10-22 02:24:24,779 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-22 02:24:24,780 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-22 02:24:24,780 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-22 02:24:24,781 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-22 02:24:24,781 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-22 02:24:24,782 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-22 02:24:24,782 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-22 02:24:24,783 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-22 02:24:24,783 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-22 02:24:24,783 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-22 02:24:24,783 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-22 02:24:24,783 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-22 02:24:24,783 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-22 02:24:24,784 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-22 02:24:24,784 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-22 02:24:24,784 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-22 02:24:24,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 02:24:24,784 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-22 02:24:24,785 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-22 02:24:24,785 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-22 02:24:24,785 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-22 02:24:24,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-22 02:24:24,786 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-22 02:24:24,786 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-22 02:24:24,786 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-22 02:24:24,786 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-22 02:24:25,091 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-22 02:24:25,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-22 02:24:25,112 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-22 02:24:25,114 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-22 02:24:25,115 INFO L275 PluginConnector]: CDTParser initialized [2020-10-22 02:24:25,116 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_tso.oepc.i [2020-10-22 02:24:25,185 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/307114662/42c59d2a642546c0a380f133445fd951/FLAGdb2c19de0 [2020-10-22 02:24:27,332 INFO L306 CDTParser]: Found 1 translation units. [2020-10-22 02:24:27,333 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_tso.oepc.i [2020-10-22 02:24:27,350 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/307114662/42c59d2a642546c0a380f133445fd951/FLAGdb2c19de0 [2020-10-22 02:24:27,512 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/307114662/42c59d2a642546c0a380f133445fd951 [2020-10-22 02:24:27,522 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-22 02:24:27,530 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-22 02:24:27,531 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-22 02:24:27,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-22 02:24:27,535 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-22 02:24:27,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 02:24:27" (1/1) ... [2020-10-22 02:24:27,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a85d86a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:24:27, skipping insertion in model container [2020-10-22 02:24:27,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 02:24:27" (1/1) ... [2020-10-22 02:24:27,548 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-22 02:24:27,589 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-22 02:24:28,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 02:24:28,064 INFO L203 MainTranslator]: Completed pre-run [2020-10-22 02:24:28,145 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 02:24:28,220 INFO L208 MainTranslator]: Completed translation [2020-10-22 02:24:28,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:24:28 WrapperNode [2020-10-22 02:24:28,221 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-22 02:24:28,223 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-22 02:24:28,223 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-22 02:24:28,223 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-22 02:24:28,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:24:28" (1/1) ... [2020-10-22 02:24:28,253 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:24:28" (1/1) ... [2020-10-22 02:24:28,280 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-22 02:24:28,281 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-22 02:24:28,281 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-22 02:24:28,281 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-22 02:24:28,288 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:24:28" (1/1) ... [2020-10-22 02:24:28,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:24:28" (1/1) ... [2020-10-22 02:24:28,292 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:24:28" (1/1) ... [2020-10-22 02:24:28,292 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:24:28" (1/1) ... [2020-10-22 02:24:28,299 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:24:28" (1/1) ... [2020-10-22 02:24:28,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:24:28" (1/1) ... [2020-10-22 02:24:28,305 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:24:28" (1/1) ... [2020-10-22 02:24:28,309 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-22 02:24:28,309 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-22 02:24:28,310 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-22 02:24:28,310 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-22 02:24:28,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:24:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 02:24:28,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-22 02:24:28,387 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-22 02:24:28,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-22 02:24:28,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-22 02:24:28,387 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-22 02:24:28,387 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-22 02:24:28,388 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-22 02:24:28,388 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-22 02:24:28,389 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-22 02:24:28,389 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-22 02:24:28,390 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-22 02:24:28,390 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-22 02:24:28,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-22 02:24:28,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-22 02:24:28,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-22 02:24:28,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-22 02:24:28,393 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-22 02:24:28,833 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-22 02:24:28,833 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-22 02:24:28,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 02:24:28 BoogieIcfgContainer [2020-10-22 02:24:28,836 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-22 02:24:28,838 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-22 02:24:28,838 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-22 02:24:28,842 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-22 02:24:28,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 02:24:27" (1/3) ... [2020-10-22 02:24:28,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76bc4a2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 02:24:28, skipping insertion in model container [2020-10-22 02:24:28,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:24:28" (2/3) ... [2020-10-22 02:24:28,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76bc4a2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 02:24:28, skipping insertion in model container [2020-10-22 02:24:28,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 02:24:28" (3/3) ... [2020-10-22 02:24:28,846 INFO L111 eAbstractionObserver]: Analyzing ICFG thin002_tso.oepc.i [2020-10-22 02:24:28,858 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-22 02:24:28,858 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-22 02:24:28,867 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-22 02:24:28,868 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-22 02:24:28,898 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:28,899 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:28,899 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:28,899 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:28,900 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:28,900 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:28,901 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:28,901 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:28,901 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:28,902 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:28,902 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:28,902 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:28,903 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:28,903 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:28,903 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:28,903 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:28,903 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:28,904 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:28,904 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:28,904 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:28,904 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:28,905 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:28,905 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:28,905 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:28,909 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:28,910 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:28,910 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:28,910 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:28,919 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:28,919 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:28,919 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:28,920 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:28,922 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:28,923 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:28,923 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:28,923 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:28,925 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:28,926 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:28,926 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:28,926 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:24:28,928 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-22 02:24:28,943 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-22 02:24:28,965 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-22 02:24:28,966 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-22 02:24:28,966 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-22 02:24:28,966 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-22 02:24:28,966 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-22 02:24:28,966 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-22 02:24:28,966 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-22 02:24:28,967 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-22 02:24:28,982 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-22 02:24:28,983 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 105 places, 95 transitions, 210 flow [2020-10-22 02:24:28,985 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 105 places, 95 transitions, 210 flow [2020-10-22 02:24:28,988 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 105 places, 95 transitions, 210 flow [2020-10-22 02:24:29,042 INFO L129 PetriNetUnfolder]: 3/91 cut-off events. [2020-10-22 02:24:29,043 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-22 02:24:29,049 INFO L80 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 91 events. 3/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 74 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 74. Up to 2 conditions per place. [2020-10-22 02:24:29,053 INFO L116 LiptonReduction]: Number of co-enabled transitions 2256 [2020-10-22 02:24:31,045 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-10-22 02:24:31,160 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-22 02:24:31,181 INFO L131 LiptonReduction]: Checked pairs total: 4418 [2020-10-22 02:24:31,182 INFO L133 LiptonReduction]: Total number of compositions: 80 [2020-10-22 02:24:31,192 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 29 transitions, 78 flow [2020-10-22 02:24:31,282 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1450 states. [2020-10-22 02:24:31,285 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states. [2020-10-22 02:24:31,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-22 02:24:31,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:24:31,298 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:24:31,298 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:24:31,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:24:31,305 INFO L82 PathProgramCache]: Analyzing trace with hash 481695671, now seen corresponding path program 1 times [2020-10-22 02:24:31,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:24:31,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851485894] [2020-10-22 02:24:31,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:24:31,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:24:31,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:24:31,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851485894] [2020-10-22 02:24:31,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:24:31,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 02:24:31,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1865326288] [2020-10-22 02:24:31,549 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:24:31,553 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:24:31,569 INFO L252 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-10-22 02:24:31,569 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:24:31,574 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:24:31,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-22 02:24:31,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:24:31,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-22 02:24:31,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-22 02:24:31,590 INFO L87 Difference]: Start difference. First operand 1450 states. Second operand 2 states. [2020-10-22 02:24:31,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:24:31,638 INFO L93 Difference]: Finished difference Result 1450 states and 5376 transitions. [2020-10-22 02:24:31,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-22 02:24:31,640 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-22 02:24:31,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:24:31,686 INFO L225 Difference]: With dead ends: 1450 [2020-10-22 02:24:31,686 INFO L226 Difference]: Without dead ends: 1194 [2020-10-22 02:24:31,688 INFO L677 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 [2020-10-22 02:24:31,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2020-10-22 02:24:31,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1194. [2020-10-22 02:24:31,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1194 states. [2020-10-22 02:24:31,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 4352 transitions. [2020-10-22 02:24:31,869 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 4352 transitions. Word has length 10 [2020-10-22 02:24:31,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:24:31,871 INFO L481 AbstractCegarLoop]: Abstraction has 1194 states and 4352 transitions. [2020-10-22 02:24:31,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-22 02:24:31,876 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 4352 transitions. [2020-10-22 02:24:31,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-22 02:24:31,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:24:31,881 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:24:31,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-22 02:24:31,881 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:24:31,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:24:31,882 INFO L82 PathProgramCache]: Analyzing trace with hash 2047662136, now seen corresponding path program 1 times [2020-10-22 02:24:31,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:24:31,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184877487] [2020-10-22 02:24:31,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:24:31,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:24:32,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:24:32,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184877487] [2020-10-22 02:24:32,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:24:32,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 02:24:32,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [925846760] [2020-10-22 02:24:32,080 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:24:32,082 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:24:32,085 INFO L252 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-10-22 02:24:32,086 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:24:32,086 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:24:32,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 02:24:32,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:24:32,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 02:24:32,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 02:24:32,089 INFO L87 Difference]: Start difference. First operand 1194 states and 4352 transitions. Second operand 4 states. [2020-10-22 02:24:32,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:24:32,136 INFO L93 Difference]: Finished difference Result 1322 states and 4640 transitions. [2020-10-22 02:24:32,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 02:24:32,137 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-22 02:24:32,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:24:32,148 INFO L225 Difference]: With dead ends: 1322 [2020-10-22 02:24:32,148 INFO L226 Difference]: Without dead ends: 1066 [2020-10-22 02:24:32,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:24:32,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2020-10-22 02:24:32,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2020-10-22 02:24:32,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2020-10-22 02:24:32,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 3808 transitions. [2020-10-22 02:24:32,200 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 3808 transitions. Word has length 11 [2020-10-22 02:24:32,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:24:32,201 INFO L481 AbstractCegarLoop]: Abstraction has 1066 states and 3808 transitions. [2020-10-22 02:24:32,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 02:24:32,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 3808 transitions. [2020-10-22 02:24:32,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 02:24:32,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:24:32,204 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:24:32,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-22 02:24:32,205 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:24:32,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:24:32,205 INFO L82 PathProgramCache]: Analyzing trace with hash -947011909, now seen corresponding path program 1 times [2020-10-22 02:24:32,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:24:32,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966902233] [2020-10-22 02:24:32,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:24:32,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:24:32,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:24:32,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966902233] [2020-10-22 02:24:32,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:24:32,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 02:24:32,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1300542103] [2020-10-22 02:24:32,285 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:24:32,287 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:24:32,289 INFO L252 McrAutomatonBuilder]: Finished intersection with 14 states and 14 transitions. [2020-10-22 02:24:32,289 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:24:32,314 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:24:32,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 02:24:32,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:24:32,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 02:24:32,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 02:24:32,315 INFO L87 Difference]: Start difference. First operand 1066 states and 3808 transitions. Second operand 4 states. [2020-10-22 02:24:32,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:24:32,358 INFO L93 Difference]: Finished difference Result 1162 states and 4016 transitions. [2020-10-22 02:24:32,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 02:24:32,359 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-22 02:24:32,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:24:32,371 INFO L225 Difference]: With dead ends: 1162 [2020-10-22 02:24:32,371 INFO L226 Difference]: Without dead ends: 970 [2020-10-22 02:24:32,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:24:32,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2020-10-22 02:24:32,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 970. [2020-10-22 02:24:32,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-10-22 02:24:32,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 3408 transitions. [2020-10-22 02:24:32,426 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 3408 transitions. Word has length 12 [2020-10-22 02:24:32,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:24:32,427 INFO L481 AbstractCegarLoop]: Abstraction has 970 states and 3408 transitions. [2020-10-22 02:24:32,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 02:24:32,427 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 3408 transitions. [2020-10-22 02:24:32,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 02:24:32,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:24:32,430 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:24:32,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-22 02:24:32,430 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:24:32,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:24:32,431 INFO L82 PathProgramCache]: Analyzing trace with hash 639503440, now seen corresponding path program 1 times [2020-10-22 02:24:32,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:24:32,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275162445] [2020-10-22 02:24:32,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:24:32,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:24:32,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:24:32,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275162445] [2020-10-22 02:24:32,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:24:32,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 02:24:32,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1953495413] [2020-10-22 02:24:32,508 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:24:32,510 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:24:32,514 INFO L252 McrAutomatonBuilder]: Finished intersection with 20 states and 26 transitions. [2020-10-22 02:24:32,514 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:24:32,617 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:24:32,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 02:24:32,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:24:32,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 02:24:32,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:24:32,619 INFO L87 Difference]: Start difference. First operand 970 states and 3408 transitions. Second operand 5 states. [2020-10-22 02:24:32,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:24:32,686 INFO L93 Difference]: Finished difference Result 1210 states and 4168 transitions. [2020-10-22 02:24:32,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-22 02:24:32,686 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-22 02:24:32,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:24:32,693 INFO L225 Difference]: With dead ends: 1210 [2020-10-22 02:24:32,693 INFO L226 Difference]: Without dead ends: 682 [2020-10-22 02:24:32,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-22 02:24:32,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2020-10-22 02:24:32,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 682. [2020-10-22 02:24:32,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 682 states. [2020-10-22 02:24:32,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 2240 transitions. [2020-10-22 02:24:32,725 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 2240 transitions. Word has length 13 [2020-10-22 02:24:32,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:24:32,725 INFO L481 AbstractCegarLoop]: Abstraction has 682 states and 2240 transitions. [2020-10-22 02:24:32,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 02:24:32,725 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 2240 transitions. [2020-10-22 02:24:32,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-22 02:24:32,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:24:32,727 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:24:32,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-22 02:24:32,728 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:24:32,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:24:32,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1293879022, now seen corresponding path program 1 times [2020-10-22 02:24:32,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:24:32,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605206992] [2020-10-22 02:24:32,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:24:32,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:24:32,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:24:32,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605206992] [2020-10-22 02:24:32,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:24:32,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 02:24:32,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1955921686] [2020-10-22 02:24:32,839 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:24:32,840 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:24:32,843 INFO L252 McrAutomatonBuilder]: Finished intersection with 22 states and 28 transitions. [2020-10-22 02:24:32,844 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:24:32,924 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:24:32,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 02:24:32,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:24:32,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 02:24:32,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:24:32,925 INFO L87 Difference]: Start difference. First operand 682 states and 2240 transitions. Second operand 5 states. [2020-10-22 02:24:32,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:24:32,982 INFO L93 Difference]: Finished difference Result 874 states and 2784 transitions. [2020-10-22 02:24:32,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-22 02:24:32,983 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-22 02:24:32,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:24:32,986 INFO L225 Difference]: With dead ends: 874 [2020-10-22 02:24:32,987 INFO L226 Difference]: Without dead ends: 394 [2020-10-22 02:24:32,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-22 02:24:32,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-10-22 02:24:33,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2020-10-22 02:24:33,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-10-22 02:24:33,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1168 transitions. [2020-10-22 02:24:33,003 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1168 transitions. Word has length 14 [2020-10-22 02:24:33,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:24:33,004 INFO L481 AbstractCegarLoop]: Abstraction has 394 states and 1168 transitions. [2020-10-22 02:24:33,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 02:24:33,004 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1168 transitions. [2020-10-22 02:24:33,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-22 02:24:33,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:24:33,005 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:24:33,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-22 02:24:33,006 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:24:33,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:24:33,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1329304009, now seen corresponding path program 1 times [2020-10-22 02:24:33,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:24:33,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237827052] [2020-10-22 02:24:33,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:24:33,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:24:33,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:24:33,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237827052] [2020-10-22 02:24:33,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:24:33,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 02:24:33,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [244762322] [2020-10-22 02:24:33,064 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:24:33,067 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:24:33,073 INFO L252 McrAutomatonBuilder]: Finished intersection with 34 states and 50 transitions. [2020-10-22 02:24:33,073 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:24:33,303 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:24:33,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 02:24:33,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:24:33,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 02:24:33,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 02:24:33,305 INFO L87 Difference]: Start difference. First operand 394 states and 1168 transitions. Second operand 4 states. [2020-10-22 02:24:33,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:24:33,333 INFO L93 Difference]: Finished difference Result 418 states and 1208 transitions. [2020-10-22 02:24:33,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 02:24:33,334 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-22 02:24:33,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:24:33,339 INFO L225 Difference]: With dead ends: 418 [2020-10-22 02:24:33,339 INFO L226 Difference]: Without dead ends: 370 [2020-10-22 02:24:33,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:24:33,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2020-10-22 02:24:33,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 370. [2020-10-22 02:24:33,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 370 states. [2020-10-22 02:24:33,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 1080 transitions. [2020-10-22 02:24:33,361 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 1080 transitions. Word has length 16 [2020-10-22 02:24:33,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:24:33,361 INFO L481 AbstractCegarLoop]: Abstraction has 370 states and 1080 transitions. [2020-10-22 02:24:33,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 02:24:33,362 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 1080 transitions. [2020-10-22 02:24:33,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-22 02:24:33,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:24:33,363 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:24:33,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-22 02:24:33,364 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:24:33,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:24:33,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1741286976, now seen corresponding path program 1 times [2020-10-22 02:24:33,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:24:33,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535681545] [2020-10-22 02:24:33,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:24:33,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:24:33,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:24:33,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535681545] [2020-10-22 02:24:33,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:24:33,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 02:24:33,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [120853052] [2020-10-22 02:24:33,426 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:24:33,429 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:24:33,447 INFO L252 McrAutomatonBuilder]: Finished intersection with 64 states and 126 transitions. [2020-10-22 02:24:33,447 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:24:34,138 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:24:34,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 02:24:34,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:24:34,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 02:24:34,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:24:34,140 INFO L87 Difference]: Start difference. First operand 370 states and 1080 transitions. Second operand 5 states. [2020-10-22 02:24:34,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:24:34,193 INFO L93 Difference]: Finished difference Result 514 states and 1460 transitions. [2020-10-22 02:24:34,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-22 02:24:34,194 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-22 02:24:34,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:24:34,196 INFO L225 Difference]: With dead ends: 514 [2020-10-22 02:24:34,196 INFO L226 Difference]: Without dead ends: 214 [2020-10-22 02:24:34,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-22 02:24:34,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-22 02:24:34,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-10-22 02:24:34,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-10-22 02:24:34,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 566 transitions. [2020-10-22 02:24:34,206 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 566 transitions. Word has length 17 [2020-10-22 02:24:34,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:24:34,207 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 566 transitions. [2020-10-22 02:24:34,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 02:24:34,207 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 566 transitions. [2020-10-22 02:24:34,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-22 02:24:34,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:24:34,208 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:24:34,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-22 02:24:34,209 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:24:34,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:24:34,209 INFO L82 PathProgramCache]: Analyzing trace with hash 243529614, now seen corresponding path program 1 times [2020-10-22 02:24:34,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:24:34,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599652] [2020-10-22 02:24:34,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:24:34,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:24:34,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:24:34,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599652] [2020-10-22 02:24:34,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:24:34,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-22 02:24:34,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1894328093] [2020-10-22 02:24:34,282 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:24:34,285 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:24:34,297 INFO L252 McrAutomatonBuilder]: Finished intersection with 50 states and 80 transitions. [2020-10-22 02:24:34,297 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:24:34,688 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:24:34,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-22 02:24:34,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:24:34,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-22 02:24:34,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-22 02:24:34,689 INFO L87 Difference]: Start difference. First operand 214 states and 566 transitions. Second operand 6 states. [2020-10-22 02:24:34,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:24:34,786 INFO L93 Difference]: Finished difference Result 190 states and 490 transitions. [2020-10-22 02:24:34,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-22 02:24:34,787 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-10-22 02:24:34,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:24:34,787 INFO L225 Difference]: With dead ends: 190 [2020-10-22 02:24:34,787 INFO L226 Difference]: Without dead ends: 0 [2020-10-22 02:24:34,788 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-10-22 02:24:34,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-22 02:24:34,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-22 02:24:34,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-22 02:24:34,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-22 02:24:34,789 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-22 02:24:34,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:24:34,789 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-22 02:24:34,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-22 02:24:34,789 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-22 02:24:34,790 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-22 02:24:34,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-22 02:24:34,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 02:24:34 BasicIcfg [2020-10-22 02:24:34,794 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-22 02:24:34,802 INFO L168 Benchmark]: Toolchain (without parser) took 7272.63 ms. Allocated memory was 138.4 MB in the beginning and 318.2 MB in the end (delta: 179.8 MB). Free memory was 99.5 MB in the beginning and 233.1 MB in the end (delta: -133.6 MB). Peak memory consumption was 46.3 MB. Max. memory is 7.1 GB. [2020-10-22 02:24:34,803 INFO L168 Benchmark]: CDTParser took 3.26 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-22 02:24:34,804 INFO L168 Benchmark]: CACSL2BoogieTranslator took 691.36 ms. Allocated memory was 138.4 MB in the beginning and 197.7 MB in the end (delta: 59.2 MB). Free memory was 98.7 MB in the beginning and 151.7 MB in the end (delta: -53.0 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-10-22 02:24:34,805 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.76 ms. Allocated memory is still 197.7 MB. Free memory was 151.0 MB in the beginning and 148.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-10-22 02:24:34,805 INFO L168 Benchmark]: Boogie Preprocessor took 28.54 ms. Allocated memory is still 197.7 MB. Free memory was 148.9 MB in the beginning and 147.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-22 02:24:34,806 INFO L168 Benchmark]: RCFGBuilder took 527.00 ms. Allocated memory is still 197.7 MB. Free memory was 147.6 MB in the beginning and 120.4 MB in the end (delta: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2020-10-22 02:24:34,807 INFO L168 Benchmark]: TraceAbstraction took 5956.30 ms. Allocated memory was 197.7 MB in the beginning and 318.2 MB in the end (delta: 120.6 MB). Free memory was 119.7 MB in the beginning and 233.1 MB in the end (delta: -113.3 MB). Peak memory consumption was 7.3 MB. Max. memory is 7.1 GB. [2020-10-22 02:24:34,810 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 3.26 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 691.36 ms. Allocated memory was 138.4 MB in the beginning and 197.7 MB in the end (delta: 59.2 MB). Free memory was 98.7 MB in the beginning and 151.7 MB in the end (delta: -53.0 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 57.76 ms. Allocated memory is still 197.7 MB. Free memory was 151.0 MB in the beginning and 148.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.54 ms. Allocated memory is still 197.7 MB. Free memory was 148.9 MB in the beginning and 147.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 527.00 ms. Allocated memory is still 197.7 MB. Free memory was 147.6 MB in the beginning and 120.4 MB in the end (delta: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5956.30 ms. Allocated memory was 197.7 MB in the beginning and 318.2 MB in the end (delta: 120.6 MB). Free memory was 119.7 MB in the beginning and 233.1 MB in the end (delta: -113.3 MB). Peak memory consumption was 7.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1227 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 95 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.1s, 105 PlacesBefore, 41 PlacesAfterwards, 95 TransitionsBefore, 29 TransitionsAfterwards, 2256 CoEnabledTransitionPairs, 5 FixpointIterations, 21 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 2 ChoiceCompositions, 80 TotalNumberOfCompositions, 4418 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 93 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.8s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 226 SDtfs, 268 SDslu, 341 SDs, 0 SdLazy, 80 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 146 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1450occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 111 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 103 ConstructedInterpolants, 0 QuantifiedInterpolants, 5237 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 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 proved your program to be correct! Received shutdown request...