/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.epf -i ../../../trunk/examples/svcomp/pthread-ext/19_time_var_mutex.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 11:46:26,694 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 11:46:26,697 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 11:46:26,722 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 11:46:26,722 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 11:46:26,723 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 11:46:26,725 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 11:46:26,726 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 11:46:26,728 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 11:46:26,729 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 11:46:26,730 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 11:46:26,731 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 11:46:26,731 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 11:46:26,732 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 11:46:26,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 11:46:26,734 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 11:46:26,735 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 11:46:26,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 11:46:26,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 11:46:26,739 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 11:46:26,741 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 11:46:26,742 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 11:46:26,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 11:46:26,744 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 11:46:26,747 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 11:46:26,754 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 11:46:26,755 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 11:46:26,756 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 11:46:26,757 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-10-16 11:46:26,798 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 11:46:26,801 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 11:46:26,803 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 11:46:26,803 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 11:46:26,803 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 11:46:26,803 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 11:46:26,803 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 11:46:26,804 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 11:46:26,806 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 11:46:26,806 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 11:46:26,806 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 11:46:26,807 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 11:46:26,807 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 11:46:26,807 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 11:46:26,807 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 11:46:26,807 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 11:46:26,808 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 11:46:26,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 11:46:26,808 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 11:46:26,808 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 11:46:26,808 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 11:46:26,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 11:46:26,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 11:46:26,813 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 11:46:26,813 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 11:46:26,814 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 11:46:26,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 11:46:26,814 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 11:46:26,814 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 11:46:27,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 11:46:27,153 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 11:46:27,157 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 11:46:27,160 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 11:46:27,161 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 11:46:27,162 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/19_time_var_mutex.i [2020-10-16 11:46:27,236 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf0ef45b5/3d800797dd1b4ea8ac5b88f269d6772e/FLAGc4679464c [2020-10-16 11:46:27,778 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 11:46:27,779 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-ext/19_time_var_mutex.i [2020-10-16 11:46:27,797 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf0ef45b5/3d800797dd1b4ea8ac5b88f269d6772e/FLAGc4679464c [2020-10-16 11:46:28,100 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf0ef45b5/3d800797dd1b4ea8ac5b88f269d6772e [2020-10-16 11:46:28,109 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 11:46:28,112 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 11:46:28,113 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 11:46:28,113 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 11:46:28,119 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 11:46:28,120 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:46:28" (1/1) ... [2020-10-16 11:46:28,124 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5626a072 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:46:28, skipping insertion in model container [2020-10-16 11:46:28,124 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:46:28" (1/1) ... [2020-10-16 11:46:28,133 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 11:46:28,201 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 11:46:28,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:46:28,691 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 11:46:28,738 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:46:28,813 INFO L208 MainTranslator]: Completed translation [2020-10-16 11:46:28,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:46:28 WrapperNode [2020-10-16 11:46:28,814 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 11:46:28,815 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 11:46:28,815 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 11:46:28,815 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 11:46:28,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:46:28" (1/1) ... [2020-10-16 11:46:28,842 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:46:28" (1/1) ... [2020-10-16 11:46:28,868 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 11:46:28,869 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 11:46:28,869 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 11:46:28,869 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 11:46:28,879 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:46:28" (1/1) ... [2020-10-16 11:46:28,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:46:28" (1/1) ... [2020-10-16 11:46:28,884 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:46:28" (1/1) ... [2020-10-16 11:46:28,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:46:28" (1/1) ... [2020-10-16 11:46:28,894 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:46:28" (1/1) ... [2020-10-16 11:46:28,898 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:46:28" (1/1) ... [2020-10-16 11:46:28,901 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:46:28" (1/1) ... [2020-10-16 11:46:28,906 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 11:46:28,907 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 11:46:28,907 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 11:46:28,907 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 11:46:28,908 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:46:28" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:46:28,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-16 11:46:28,984 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-16 11:46:28,985 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-16 11:46:28,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 11:46:28,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 11:46:28,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 11:46:28,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-16 11:46:28,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 11:46:28,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 11:46:28,988 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 11:46:30,012 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 11:46:30,013 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-16 11:46:30,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:46:30 BoogieIcfgContainer [2020-10-16 11:46:30,018 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 11:46:30,019 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 11:46:30,020 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 11:46:30,025 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 11:46:30,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 11:46:28" (1/3) ... [2020-10-16 11:46:30,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fd68a71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:46:30, skipping insertion in model container [2020-10-16 11:46:30,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:46:28" (2/3) ... [2020-10-16 11:46:30,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fd68a71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:46:30, skipping insertion in model container [2020-10-16 11:46:30,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:46:30" (3/3) ... [2020-10-16 11:46:30,031 INFO L111 eAbstractionObserver]: Analyzing ICFG 19_time_var_mutex.i [2020-10-16 11:46:30,043 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 11:46:30,045 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 11:46:30,052 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-16 11:46:30,053 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 11:46:30,074 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:30,074 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:30,074 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:30,075 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:30,075 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:30,075 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:30,076 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:30,076 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:30,076 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:30,076 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:30,076 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:30,077 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:30,077 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:30,077 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:30,078 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:30,078 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:30,078 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:30,078 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:30,079 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:30,079 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_release_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:30,079 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:30,079 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_release_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:30,080 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:30,080 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:30,080 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:30,081 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:30,081 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_release_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:30,081 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:30,081 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_release_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:30,082 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:30,082 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:30,082 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:30,082 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:30,083 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:30,087 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:30,087 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:30,087 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:30,087 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:30,088 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:30,088 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:30,088 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:30,088 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:30,088 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:30,089 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:30,089 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_release_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:30,089 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:30,089 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:30,090 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:30,090 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_release_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:30,090 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:30,092 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 11:46:30,106 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 11:46:30,125 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:46:30,125 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:46:30,125 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 11:46:30,126 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:46:30,126 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:46:30,126 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:46:30,126 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:46:30,126 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:46:30,137 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 11:46:30,138 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 54 transitions, 113 flow [2020-10-16 11:46:30,141 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 54 transitions, 113 flow [2020-10-16 11:46:30,143 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 54 places, 54 transitions, 113 flow [2020-10-16 11:46:30,180 INFO L129 PetriNetUnfolder]: 4/53 cut-off events. [2020-10-16 11:46:30,181 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 11:46:30,186 INFO L80 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 53 events. 4/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 62 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 38. Up to 3 conditions per place. [2020-10-16 11:46:30,188 INFO L117 LiptonReduction]: Number of co-enabled transitions 704 [2020-10-16 11:46:31,636 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2020-10-16 11:46:31,717 INFO L132 LiptonReduction]: Checked pairs total: 2171 [2020-10-16 11:46:31,717 INFO L134 LiptonReduction]: Total number of compositions: 40 [2020-10-16 11:46:31,725 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 21 transitions, 47 flow [2020-10-16 11:46:31,740 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-10-16 11:46:31,742 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-10-16 11:46:31,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-16 11:46:31,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:46:31,762 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-16 11:46:31,763 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:46:31,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:46:31,768 INFO L82 PathProgramCache]: Analyzing trace with hash 403413595, now seen corresponding path program 1 times [2020-10-16 11:46:31,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:46:31,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80944484] [2020-10-16 11:46:31,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:46:31,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:46:32,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:46:32,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80944484] [2020-10-16 11:46:32,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:46:32,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:46:32,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491605253] [2020-10-16 11:46:32,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:46:32,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:46:32,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:46:32,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:46:32,072 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2020-10-16 11:46:32,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:46:32,101 INFO L93 Difference]: Finished difference Result 74 states and 138 transitions. [2020-10-16 11:46:32,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:46:32,103 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-16 11:46:32,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:46:32,115 INFO L225 Difference]: With dead ends: 74 [2020-10-16 11:46:32,116 INFO L226 Difference]: Without dead ends: 68 [2020-10-16 11:46:32,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:46:32,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-16 11:46:32,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-16 11:46:32,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-16 11:46:32,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 124 transitions. [2020-10-16 11:46:32,165 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 124 transitions. Word has length 5 [2020-10-16 11:46:32,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:46:32,165 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 124 transitions. [2020-10-16 11:46:32,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:46:32,166 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 124 transitions. [2020-10-16 11:46:32,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-16 11:46:32,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:46:32,167 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-16 11:46:32,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 11:46:32,167 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:46:32,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:46:32,168 INFO L82 PathProgramCache]: Analyzing trace with hash -378762693, now seen corresponding path program 1 times [2020-10-16 11:46:32,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:46:32,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106395923] [2020-10-16 11:46:32,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:46:32,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:46:32,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:46:32,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106395923] [2020-10-16 11:46:32,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:46:32,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:46:32,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192561320] [2020-10-16 11:46:32,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:46:32,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:46:32,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:46:32,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:46:32,218 INFO L87 Difference]: Start difference. First operand 68 states and 124 transitions. Second operand 3 states. [2020-10-16 11:46:32,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:46:32,246 INFO L93 Difference]: Finished difference Result 66 states and 112 transitions. [2020-10-16 11:46:32,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:46:32,247 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-16 11:46:32,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:46:32,248 INFO L225 Difference]: With dead ends: 66 [2020-10-16 11:46:32,249 INFO L226 Difference]: Without dead ends: 58 [2020-10-16 11:46:32,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:46:32,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-16 11:46:32,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2020-10-16 11:46:32,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-16 11:46:32,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 95 transitions. [2020-10-16 11:46:32,259 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 95 transitions. Word has length 6 [2020-10-16 11:46:32,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:46:32,259 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 95 transitions. [2020-10-16 11:46:32,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:46:32,260 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 95 transitions. [2020-10-16 11:46:32,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 11:46:32,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:46:32,261 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:46:32,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 11:46:32,261 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:46:32,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:46:32,262 INFO L82 PathProgramCache]: Analyzing trace with hash 778386525, now seen corresponding path program 1 times [2020-10-16 11:46:32,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:46:32,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480350164] [2020-10-16 11:46:32,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:46:32,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:46:32,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:46:32,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480350164] [2020-10-16 11:46:32,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:46:32,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:46:32,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770585050] [2020-10-16 11:46:32,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:46:32,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:46:32,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:46:32,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:46:32,306 INFO L87 Difference]: Start difference. First operand 54 states and 95 transitions. Second operand 3 states. [2020-10-16 11:46:32,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:46:32,324 INFO L93 Difference]: Finished difference Result 50 states and 82 transitions. [2020-10-16 11:46:32,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:46:32,324 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-16 11:46:32,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:46:32,325 INFO L225 Difference]: With dead ends: 50 [2020-10-16 11:46:32,325 INFO L226 Difference]: Without dead ends: 37 [2020-10-16 11:46:32,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:46:32,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-16 11:46:32,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-16 11:46:32,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-16 11:46:32,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 54 transitions. [2020-10-16 11:46:32,331 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 54 transitions. Word has length 8 [2020-10-16 11:46:32,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:46:32,331 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 54 transitions. [2020-10-16 11:46:32,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:46:32,332 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 54 transitions. [2020-10-16 11:46:32,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 11:46:32,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:46:32,333 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:46:32,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 11:46:32,333 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:46:32,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:46:32,334 INFO L82 PathProgramCache]: Analyzing trace with hash 537187588, now seen corresponding path program 1 times [2020-10-16 11:46:32,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:46:32,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196344474] [2020-10-16 11:46:32,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:46:32,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:46:32,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:46:32,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196344474] [2020-10-16 11:46:32,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:46:32,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:46:32,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442974482] [2020-10-16 11:46:32,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:46:32,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:46:32,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:46:32,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:46:32,405 INFO L87 Difference]: Start difference. First operand 37 states and 54 transitions. Second operand 3 states. [2020-10-16 11:46:32,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:46:32,412 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2020-10-16 11:46:32,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:46:32,413 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-16 11:46:32,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:46:32,413 INFO L225 Difference]: With dead ends: 37 [2020-10-16 11:46:32,414 INFO L226 Difference]: Without dead ends: 31 [2020-10-16 11:46:32,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:46:32,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-16 11:46:32,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-16 11:46:32,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-16 11:46:32,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-10-16 11:46:32,418 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2020-10-16 11:46:32,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:46:32,418 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-10-16 11:46:32,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:46:32,419 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-10-16 11:46:32,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 11:46:32,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:46:32,419 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:46:32,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 11:46:32,420 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:46:32,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:46:32,420 INFO L82 PathProgramCache]: Analyzing trace with hash 93897508, now seen corresponding path program 2 times [2020-10-16 11:46:32,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:46:32,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628879891] [2020-10-16 11:46:32,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:46:32,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:46:32,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:46:32,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628879891] [2020-10-16 11:46:32,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:46:32,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:46:32,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284419648] [2020-10-16 11:46:32,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 11:46:32,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:46:32,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 11:46:32,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-16 11:46:32,553 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 6 states. [2020-10-16 11:46:32,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:46:32,588 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2020-10-16 11:46:32,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 11:46:32,588 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-10-16 11:46:32,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:46:32,589 INFO L225 Difference]: With dead ends: 11 [2020-10-16 11:46:32,589 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 11:46:32,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-16 11:46:32,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 11:46:32,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 11:46:32,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 11:46:32,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 11:46:32,590 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-10-16 11:46:32,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:46:32,590 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 11:46:32,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 11:46:32,591 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 11:46:32,591 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 11:46:32,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 11:46:32,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 11:46:32 BasicIcfg [2020-10-16 11:46:32,595 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 11:46:32,597 INFO L168 Benchmark]: Toolchain (without parser) took 4485.19 ms. Allocated memory was 147.8 MB in the beginning and 245.4 MB in the end (delta: 97.5 MB). Free memory was 102.7 MB in the beginning and 161.7 MB in the end (delta: -59.0 MB). Peak memory consumption was 38.5 MB. Max. memory is 7.1 GB. [2020-10-16 11:46:32,598 INFO L168 Benchmark]: CDTParser took 0.46 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-16 11:46:32,599 INFO L168 Benchmark]: CACSL2BoogieTranslator took 701.18 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 102.2 MB in the beginning and 162.8 MB in the end (delta: -60.6 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2020-10-16 11:46:32,599 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.73 ms. Allocated memory is still 203.9 MB. Free memory was 162.2 MB in the beginning and 160.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-16 11:46:32,600 INFO L168 Benchmark]: Boogie Preprocessor took 37.25 ms. Allocated memory is still 203.9 MB. Free memory was 160.2 MB in the beginning and 158.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-16 11:46:32,601 INFO L168 Benchmark]: RCFGBuilder took 1111.75 ms. Allocated memory was 203.9 MB in the beginning and 234.4 MB in the end (delta: 30.4 MB). Free memory was 158.3 MB in the beginning and 201.7 MB in the end (delta: -43.4 MB). Peak memory consumption was 71.7 MB. Max. memory is 7.1 GB. [2020-10-16 11:46:32,602 INFO L168 Benchmark]: TraceAbstraction took 2575.35 ms. Allocated memory was 234.4 MB in the beginning and 245.4 MB in the end (delta: 11.0 MB). Free memory was 201.7 MB in the beginning and 161.7 MB in the end (delta: 40.0 MB). Peak memory consumption was 51.0 MB. Max. memory is 7.1 GB. [2020-10-16 11:46:32,606 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 701.18 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 102.2 MB in the beginning and 162.8 MB in the end (delta: -60.6 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 53.73 ms. Allocated memory is still 203.9 MB. Free memory was 162.2 MB in the beginning and 160.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 37.25 ms. Allocated memory is still 203.9 MB. Free memory was 160.2 MB in the beginning and 158.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1111.75 ms. Allocated memory was 203.9 MB in the beginning and 234.4 MB in the end (delta: 30.4 MB). Free memory was 158.3 MB in the beginning and 201.7 MB in the end (delta: -43.4 MB). Peak memory consumption was 71.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2575.35 ms. Allocated memory was 234.4 MB in the beginning and 245.4 MB in the end (delta: 11.0 MB). Free memory was 201.7 MB in the beginning and 161.7 MB in the end (delta: 40.0 MB). Peak memory consumption was 51.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 374 VarBasedMoverChecksPositive, 35 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 63 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.5s, 54 PlacesBefore, 22 PlacesAfterwards, 54 TransitionsBefore, 21 TransitionsAfterwards, 704 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 40 TotalNumberOfCompositions, 2171 MoverChecksTotal - PositiveResult [Line: 702]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 711]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 51 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.4s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 77 SDtfs, 52 SDslu, 33 SDs, 0 SdLazy, 27 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred 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: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 608 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...