/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-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe032_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-22 00:42:24,773 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-22 00:42:24,777 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-22 00:42:24,816 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-22 00:42:24,817 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-22 00:42:24,827 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-22 00:42:24,829 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-22 00:42:24,832 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-22 00:42:24,834 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-22 00:42:24,838 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-22 00:42:24,838 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-22 00:42:24,840 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-22 00:42:24,841 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-22 00:42:24,843 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-22 00:42:24,845 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-22 00:42:24,847 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-22 00:42:24,848 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-22 00:42:24,849 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-22 00:42:24,851 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-22 00:42:24,856 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-22 00:42:24,857 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-22 00:42:24,860 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-22 00:42:24,861 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-22 00:42:24,862 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-22 00:42:24,865 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-22 00:42:24,867 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-22 00:42:24,868 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-22 00:42:24,869 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-22 00:42:24,869 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-22 00:42:24,870 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-22 00:42:24,870 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-22 00:42:24,871 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-22 00:42:24,871 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-22 00:42:24,871 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-22 00:42:24,872 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-22 00:42:24,873 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-22 00:42:24,874 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-WP.epf [2020-10-22 00:42:24,895 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-22 00:42:24,895 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-22 00:42:24,896 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-22 00:42:24,896 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-22 00:42:24,897 INFO L138 SettingsManager]: * Use SBE=true [2020-10-22 00:42:24,897 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-22 00:42:24,897 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-22 00:42:24,897 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-22 00:42:24,897 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-22 00:42:24,898 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-22 00:42:24,898 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-22 00:42:24,898 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-22 00:42:24,898 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-22 00:42:24,898 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-22 00:42:24,899 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-22 00:42:24,899 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-22 00:42:24,899 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-22 00:42:24,899 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-22 00:42:24,899 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-22 00:42:24,900 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-22 00:42:24,900 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-22 00:42:24,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 00:42:24,900 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-22 00:42:24,901 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-22 00:42:24,901 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-22 00:42:24,901 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-22 00:42:24,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-22 00:42:24,901 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-22 00:42:24,902 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-22 00:42:24,902 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-22 00:42:24,902 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-22 00:42:25,173 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-22 00:42:25,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-22 00:42:25,189 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-22 00:42:25,190 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-22 00:42:25,191 INFO L275 PluginConnector]: CDTParser initialized [2020-10-22 00:42:25,191 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe032_tso.opt.i [2020-10-22 00:42:25,262 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8f5223f3/1d94469e9bf9490a814912de46a48a42/FLAG5373dbbd7 [2020-10-22 00:42:25,698 INFO L306 CDTParser]: Found 1 translation units. [2020-10-22 00:42:25,699 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe032_tso.opt.i [2020-10-22 00:42:25,718 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8f5223f3/1d94469e9bf9490a814912de46a48a42/FLAG5373dbbd7 [2020-10-22 00:42:26,013 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8f5223f3/1d94469e9bf9490a814912de46a48a42 [2020-10-22 00:42:26,022 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-22 00:42:26,027 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-22 00:42:26,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-22 00:42:26,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-22 00:42:26,032 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-22 00:42:26,033 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 12:42:26" (1/1) ... [2020-10-22 00:42:26,036 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7924df04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:42:26, skipping insertion in model container [2020-10-22 00:42:26,036 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 12:42:26" (1/1) ... [2020-10-22 00:42:26,043 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-22 00:42:26,094 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-22 00:42:26,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 00:42:26,645 INFO L203 MainTranslator]: Completed pre-run [2020-10-22 00:42:26,689 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 00:42:26,767 INFO L208 MainTranslator]: Completed translation [2020-10-22 00:42:26,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:42:26 WrapperNode [2020-10-22 00:42:26,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-22 00:42:26,768 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-22 00:42:26,769 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-22 00:42:26,769 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-22 00:42:26,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:42:26" (1/1) ... [2020-10-22 00:42:26,794 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:42:26" (1/1) ... [2020-10-22 00:42:26,817 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-22 00:42:26,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-22 00:42:26,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-22 00:42:26,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-22 00:42:26,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:42:26" (1/1) ... [2020-10-22 00:42:26,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:42:26" (1/1) ... [2020-10-22 00:42:26,831 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:42:26" (1/1) ... [2020-10-22 00:42:26,831 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:42:26" (1/1) ... [2020-10-22 00:42:26,837 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:42:26" (1/1) ... [2020-10-22 00:42:26,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:42:26" (1/1) ... [2020-10-22 00:42:26,842 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:42:26" (1/1) ... [2020-10-22 00:42:26,845 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-22 00:42:26,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-22 00:42:26,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-22 00:42:26,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-22 00:42:26,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:42:26" (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 00:42:26,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-22 00:42:26,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-22 00:42:26,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-22 00:42:26,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-22 00:42:26,916 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-22 00:42:26,916 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-22 00:42:26,917 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-22 00:42:26,917 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-22 00:42:26,918 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-22 00:42:26,918 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-22 00:42:26,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-22 00:42:26,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-22 00:42:26,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-22 00:42:26,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-22 00:42:26,921 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 00:42:27,333 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-22 00:42:27,333 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-22 00:42:27,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 12:42:27 BoogieIcfgContainer [2020-10-22 00:42:27,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-22 00:42:27,337 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-22 00:42:27,338 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-22 00:42:27,341 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-22 00:42:27,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 12:42:26" (1/3) ... [2020-10-22 00:42:27,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4acb165b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 12:42:27, skipping insertion in model container [2020-10-22 00:42:27,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:42:26" (2/3) ... [2020-10-22 00:42:27,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4acb165b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 12:42:27, skipping insertion in model container [2020-10-22 00:42:27,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 12:42:27" (3/3) ... [2020-10-22 00:42:27,345 INFO L111 eAbstractionObserver]: Analyzing ICFG safe032_tso.opt.i [2020-10-22 00:42:27,357 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-22 00:42:27,358 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-22 00:42:27,366 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-22 00:42:27,368 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-22 00:42:27,396 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:27,397 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:27,397 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:27,397 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:27,398 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:27,398 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:27,399 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:27,399 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:27,399 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:27,399 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:27,400 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:27,400 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:27,401 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:27,401 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:27,401 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:27,401 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:27,402 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:27,402 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:27,405 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:27,406 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:27,406 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:27,406 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:27,418 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:27,419 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:27,419 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:27,419 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:27,423 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:27,423 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:27,423 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:27,423 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:27,426 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-22 00:42:27,441 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-22 00:42:27,463 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-22 00:42:27,463 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-22 00:42:27,463 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-22 00:42:27,463 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-22 00:42:27,464 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-22 00:42:27,464 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-22 00:42:27,464 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-22 00:42:27,464 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-22 00:42:27,478 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-22 00:42:27,479 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-10-22 00:42:27,482 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-10-22 00:42:27,484 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-10-22 00:42:27,531 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-10-22 00:42:27,531 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-22 00:42:27,537 INFO L80 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 3/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-10-22 00:42:27,540 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-10-22 00:42:29,051 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-10-22 00:42:29,246 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2020-10-22 00:42:29,381 INFO L131 LiptonReduction]: Checked pairs total: 2833 [2020-10-22 00:42:29,382 INFO L133 LiptonReduction]: Total number of compositions: 71 [2020-10-22 00:42:29,388 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-10-22 00:42:29,416 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-22 00:42:29,418 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-22 00:42:29,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-22 00:42:29,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:42:29,427 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:42:29,427 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:42:29,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:42:29,433 INFO L82 PathProgramCache]: Analyzing trace with hash -618309236, now seen corresponding path program 1 times [2020-10-22 00:42:29,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:42:29,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45131048] [2020-10-22 00:42:29,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:42:29,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:42:29,681 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 00:42:29,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45131048] [2020-10-22 00:42:29,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:42:29,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-22 00:42:29,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [815618903] [2020-10-22 00:42:29,684 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:42:29,687 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:42:29,702 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-22 00:42:29,702 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:42:29,706 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:42:29,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 00:42:29,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:42:29,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 00:42:29,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 00:42:29,725 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-22 00:42:29,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:42:29,763 INFO L93 Difference]: Finished difference Result 294 states and 849 transitions. [2020-10-22 00:42:29,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 00:42:29,765 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-22 00:42:29,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:42:29,780 INFO L225 Difference]: With dead ends: 294 [2020-10-22 00:42:29,780 INFO L226 Difference]: Without dead ends: 230 [2020-10-22 00:42:29,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 00:42:29,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-22 00:42:29,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-10-22 00:42:29,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-22 00:42:29,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 641 transitions. [2020-10-22 00:42:29,849 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 641 transitions. Word has length 8 [2020-10-22 00:42:29,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:42:29,850 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 641 transitions. [2020-10-22 00:42:29,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 00:42:29,850 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 641 transitions. [2020-10-22 00:42:29,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-22 00:42:29,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:42:29,852 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:42:29,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-22 00:42:29,852 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:42:29,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:42:29,853 INFO L82 PathProgramCache]: Analyzing trace with hash -2017712009, now seen corresponding path program 1 times [2020-10-22 00:42:29,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:42:29,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462915686] [2020-10-22 00:42:29,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:42:29,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:42:29,974 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 00:42:29,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462915686] [2020-10-22 00:42:29,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:42:29,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 00:42:29,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1765264787] [2020-10-22 00:42:29,976 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:42:29,977 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:42:29,978 INFO L252 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-10-22 00:42:29,979 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:42:30,000 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:42:30,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 00:42:30,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:42:30,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 00:42:30,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 00:42:30,003 INFO L87 Difference]: Start difference. First operand 230 states and 641 transitions. Second operand 3 states. [2020-10-22 00:42:30,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:42:30,024 INFO L93 Difference]: Finished difference Result 326 states and 861 transitions. [2020-10-22 00:42:30,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 00:42:30,025 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-22 00:42:30,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:42:30,028 INFO L225 Difference]: With dead ends: 326 [2020-10-22 00:42:30,028 INFO L226 Difference]: Without dead ends: 254 [2020-10-22 00:42:30,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 00:42:30,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-10-22 00:42:30,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 218. [2020-10-22 00:42:30,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-22 00:42:30,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 576 transitions. [2020-10-22 00:42:30,048 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 576 transitions. Word has length 9 [2020-10-22 00:42:30,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:42:30,048 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 576 transitions. [2020-10-22 00:42:30,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 00:42:30,048 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 576 transitions. [2020-10-22 00:42:30,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-22 00:42:30,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:42:30,050 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:42:30,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-22 00:42:30,050 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:42:30,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:42:30,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1987739380, now seen corresponding path program 1 times [2020-10-22 00:42:30,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:42:30,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497533410] [2020-10-22 00:42:30,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:42:30,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:42:30,094 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 00:42:30,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497533410] [2020-10-22 00:42:30,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:42:30,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-22 00:42:30,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1497562047] [2020-10-22 00:42:30,096 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:42:30,097 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:42:30,098 INFO L252 McrAutomatonBuilder]: Finished intersection with 11 states and 11 transitions. [2020-10-22 00:42:30,098 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:42:30,107 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:42:30,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 00:42:30,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:42:30,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 00:42:30,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 00:42:30,109 INFO L87 Difference]: Start difference. First operand 218 states and 576 transitions. Second operand 3 states. [2020-10-22 00:42:30,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:42:30,117 INFO L93 Difference]: Finished difference Result 214 states and 561 transitions. [2020-10-22 00:42:30,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 00:42:30,117 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-22 00:42:30,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:42:30,120 INFO L225 Difference]: With dead ends: 214 [2020-10-22 00:42:30,120 INFO L226 Difference]: Without dead ends: 214 [2020-10-22 00:42:30,120 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 [2020-10-22 00:42:30,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-22 00:42:30,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-10-22 00:42:30,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-10-22 00:42:30,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 561 transitions. [2020-10-22 00:42:30,138 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 561 transitions. Word has length 9 [2020-10-22 00:42:30,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:42:30,138 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 561 transitions. [2020-10-22 00:42:30,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 00:42:30,139 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 561 transitions. [2020-10-22 00:42:30,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-22 00:42:30,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:42:30,140 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:42:30,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-22 00:42:30,141 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:42:30,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:42:30,141 INFO L82 PathProgramCache]: Analyzing trace with hash -380513842, now seen corresponding path program 1 times [2020-10-22 00:42:30,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:42:30,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862107626] [2020-10-22 00:42:30,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:42:30,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:42:30,198 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 00:42:30,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862107626] [2020-10-22 00:42:30,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:42:30,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-22 00:42:30,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1380688988] [2020-10-22 00:42:30,199 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:42:30,201 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:42:30,202 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 27 transitions. [2020-10-22 00:42:30,202 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:42:30,313 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:42:30,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 00:42:30,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:42:30,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 00:42:30,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 00:42:30,315 INFO L87 Difference]: Start difference. First operand 214 states and 561 transitions. Second operand 3 states. [2020-10-22 00:42:30,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:42:30,328 INFO L93 Difference]: Finished difference Result 192 states and 487 transitions. [2020-10-22 00:42:30,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 00:42:30,328 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-22 00:42:30,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:42:30,330 INFO L225 Difference]: With dead ends: 192 [2020-10-22 00:42:30,330 INFO L226 Difference]: Without dead ends: 168 [2020-10-22 00:42:30,331 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 00:42:30,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-22 00:42:30,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2020-10-22 00:42:30,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-10-22 00:42:30,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 433 transitions. [2020-10-22 00:42:30,347 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 433 transitions. Word has length 10 [2020-10-22 00:42:30,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:42:30,348 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 433 transitions. [2020-10-22 00:42:30,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 00:42:30,348 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 433 transitions. [2020-10-22 00:42:30,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 00:42:30,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:42:30,351 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:42:30,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-22 00:42:30,351 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:42:30,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:42:30,352 INFO L82 PathProgramCache]: Analyzing trace with hash 658800567, now seen corresponding path program 1 times [2020-10-22 00:42:30,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:42:30,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177478429] [2020-10-22 00:42:30,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:42:30,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:42:30,398 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 00:42:30,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177478429] [2020-10-22 00:42:30,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:42:30,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 00:42:30,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2090365466] [2020-10-22 00:42:30,399 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:42:30,401 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:42:30,405 INFO L252 McrAutomatonBuilder]: Finished intersection with 35 states and 61 transitions. [2020-10-22 00:42:30,405 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:42:30,488 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:42:30,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 00:42:30,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:42:30,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 00:42:30,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 00:42:30,490 INFO L87 Difference]: Start difference. First operand 168 states and 433 transitions. Second operand 4 states. [2020-10-22 00:42:30,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:42:30,517 INFO L93 Difference]: Finished difference Result 216 states and 549 transitions. [2020-10-22 00:42:30,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 00:42:30,517 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-22 00:42:30,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:42:30,519 INFO L225 Difference]: With dead ends: 216 [2020-10-22 00:42:30,519 INFO L226 Difference]: Without dead ends: 144 [2020-10-22 00:42:30,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 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 00:42:30,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-22 00:42:30,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-10-22 00:42:30,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-22 00:42:30,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 355 transitions. [2020-10-22 00:42:30,528 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 355 transitions. Word has length 12 [2020-10-22 00:42:30,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:42:30,528 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 355 transitions. [2020-10-22 00:42:30,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 00:42:30,528 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 355 transitions. [2020-10-22 00:42:30,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 00:42:30,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:42:30,530 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:42:30,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-22 00:42:30,530 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:42:30,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:42:30,531 INFO L82 PathProgramCache]: Analyzing trace with hash 659418087, now seen corresponding path program 2 times [2020-10-22 00:42:30,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:42:30,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308192412] [2020-10-22 00:42:30,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:42:30,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:42:30,610 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 00:42:30,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308192412] [2020-10-22 00:42:30,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:42:30,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 00:42:30,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1387351529] [2020-10-22 00:42:30,611 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:42:30,613 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:42:30,617 INFO L252 McrAutomatonBuilder]: Finished intersection with 39 states and 71 transitions. [2020-10-22 00:42:30,617 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:42:30,636 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-22 00:42:30,636 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-22 00:42:30,650 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-22 00:42:30,651 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-22 00:42:30,699 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-22 00:42:30,699 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-22 00:42:30,933 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3897#(not (= 3 ~__unbuffered_cnt~0))] [2020-10-22 00:42:30,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 00:42:30,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:42:30,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 00:42:30,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-22 00:42:30,934 INFO L87 Difference]: Start difference. First operand 144 states and 355 transitions. Second operand 5 states. [2020-10-22 00:42:30,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:42:30,978 INFO L93 Difference]: Finished difference Result 137 states and 312 transitions. [2020-10-22 00:42:30,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 00:42:30,979 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-22 00:42:30,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:42:30,980 INFO L225 Difference]: With dead ends: 137 [2020-10-22 00:42:30,980 INFO L226 Difference]: Without dead ends: 97 [2020-10-22 00:42:30,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-22 00:42:30,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-22 00:42:30,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-10-22 00:42:30,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-22 00:42:30,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-10-22 00:42:30,986 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 12 [2020-10-22 00:42:30,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:42:30,987 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-10-22 00:42:30,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 00:42:30,987 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-10-22 00:42:30,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-22 00:42:30,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:42:30,988 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:42:30,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-22 00:42:30,989 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:42:30,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:42:30,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1390045438, now seen corresponding path program 1 times [2020-10-22 00:42:30,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:42:30,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984892992] [2020-10-22 00:42:30,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:42:31,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:42:31,021 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 00:42:31,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984892992] [2020-10-22 00:42:31,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:42:31,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 00:42:31,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [674114841] [2020-10-22 00:42:31,023 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:42:31,024 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:42:31,028 INFO L252 McrAutomatonBuilder]: Finished intersection with 25 states and 32 transitions. [2020-10-22 00:42:31,028 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:42:31,043 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:42:31,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 00:42:31,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:42:31,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 00:42:31,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 00:42:31,045 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand 3 states. [2020-10-22 00:42:31,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:42:31,053 INFO L93 Difference]: Finished difference Result 115 states and 230 transitions. [2020-10-22 00:42:31,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 00:42:31,053 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-22 00:42:31,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:42:31,055 INFO L225 Difference]: With dead ends: 115 [2020-10-22 00:42:31,055 INFO L226 Difference]: Without dead ends: 98 [2020-10-22 00:42:31,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 00:42:31,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-22 00:42:31,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-10-22 00:42:31,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-22 00:42:31,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 193 transitions. [2020-10-22 00:42:31,059 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 193 transitions. Word has length 14 [2020-10-22 00:42:31,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:42:31,060 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 193 transitions. [2020-10-22 00:42:31,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 00:42:31,060 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 193 transitions. [2020-10-22 00:42:31,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-22 00:42:31,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:42:31,061 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:42:31,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-22 00:42:31,062 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:42:31,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:42:31,062 INFO L82 PathProgramCache]: Analyzing trace with hash 836357957, now seen corresponding path program 1 times [2020-10-22 00:42:31,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:42:31,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990239186] [2020-10-22 00:42:31,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:42:31,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:42:31,116 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 00:42:31,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990239186] [2020-10-22 00:42:31,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:42:31,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-22 00:42:31,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1738075312] [2020-10-22 00:42:31,117 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:42:31,119 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:42:31,124 INFO L252 McrAutomatonBuilder]: Finished intersection with 36 states and 54 transitions. [2020-10-22 00:42:31,124 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:42:31,346 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:42:31,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-22 00:42:31,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:42:31,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-22 00:42:31,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-22 00:42:31,348 INFO L87 Difference]: Start difference. First operand 96 states and 193 transitions. Second operand 6 states. [2020-10-22 00:42:31,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:42:31,400 INFO L93 Difference]: Finished difference Result 92 states and 183 transitions. [2020-10-22 00:42:31,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-22 00:42:31,400 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-22 00:42:31,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:42:31,401 INFO L225 Difference]: With dead ends: 92 [2020-10-22 00:42:31,401 INFO L226 Difference]: Without dead ends: 36 [2020-10-22 00:42:31,402 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-22 00:42:31,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-22 00:42:31,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-22 00:42:31,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-22 00:42:31,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-10-22 00:42:31,404 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-10-22 00:42:31,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:42:31,404 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-10-22 00:42:31,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-22 00:42:31,404 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-10-22 00:42:31,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-22 00:42:31,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:42:31,405 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 00:42:31,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-22 00:42:31,405 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:42:31,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:42:31,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1235317196, now seen corresponding path program 1 times [2020-10-22 00:42:31,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:42:31,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366061929] [2020-10-22 00:42:31,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:42:31,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:42:31,445 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 00:42:31,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366061929] [2020-10-22 00:42:31,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:42:31,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 00:42:31,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1646051037] [2020-10-22 00:42:31,447 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:42:31,449 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:42:31,457 INFO L252 McrAutomatonBuilder]: Finished intersection with 54 states and 89 transitions. [2020-10-22 00:42:31,457 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:42:31,506 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:42:31,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 00:42:31,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:42:31,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 00:42:31,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 00:42:31,507 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-10-22 00:42:31,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:42:31,520 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-10-22 00:42:31,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 00:42:31,520 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-22 00:42:31,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:42:31,521 INFO L225 Difference]: With dead ends: 35 [2020-10-22 00:42:31,521 INFO L226 Difference]: Without dead ends: 0 [2020-10-22 00:42:31,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 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 00:42:31,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-22 00:42:31,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-22 00:42:31,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-22 00:42:31,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-22 00:42:31,522 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-22 00:42:31,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:42:31,522 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-22 00:42:31,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 00:42:31,523 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-22 00:42:31,523 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-22 00:42:31,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-22 00:42:31,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 12:42:31 BasicIcfg [2020-10-22 00:42:31,527 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-22 00:42:31,529 INFO L168 Benchmark]: Toolchain (without parser) took 5505.26 ms. Allocated memory was 140.5 MB in the beginning and 274.2 MB in the end (delta: 133.7 MB). Free memory was 102.3 MB in the beginning and 136.6 MB in the end (delta: -34.3 MB). Peak memory consumption was 99.4 MB. Max. memory is 7.1 GB. [2020-10-22 00:42:31,530 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-22 00:42:31,530 INFO L168 Benchmark]: CACSL2BoogieTranslator took 739.83 ms. Allocated memory was 140.5 MB in the beginning and 205.5 MB in the end (delta: 65.0 MB). Free memory was 101.5 MB in the beginning and 159.7 MB in the end (delta: -58.2 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-10-22 00:42:31,531 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.00 ms. Allocated memory is still 205.5 MB. Free memory was 159.7 MB in the beginning and 157.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-10-22 00:42:31,532 INFO L168 Benchmark]: Boogie Preprocessor took 27.04 ms. Allocated memory is still 205.5 MB. Free memory was 157.6 MB in the beginning and 156.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-22 00:42:31,533 INFO L168 Benchmark]: RCFGBuilder took 490.99 ms. Allocated memory is still 205.5 MB. Free memory was 155.6 MB in the beginning and 132.3 MB in the end (delta: 23.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-10-22 00:42:31,534 INFO L168 Benchmark]: TraceAbstraction took 4189.35 ms. Allocated memory was 205.5 MB in the beginning and 274.2 MB in the end (delta: 68.7 MB). Free memory was 131.6 MB in the beginning and 136.6 MB in the end (delta: -5.1 MB). Peak memory consumption was 63.6 MB. Max. memory is 7.1 GB. [2020-10-22 00:42:31,538 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 739.83 ms. Allocated memory was 140.5 MB in the beginning and 205.5 MB in the end (delta: 65.0 MB). Free memory was 101.5 MB in the beginning and 159.7 MB in the end (delta: -58.2 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.00 ms. Allocated memory is still 205.5 MB. Free memory was 159.7 MB in the beginning and 157.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.04 ms. Allocated memory is still 205.5 MB. Free memory was 157.6 MB in the beginning and 156.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 490.99 ms. Allocated memory is still 205.5 MB. Free memory was 155.6 MB in the beginning and 132.3 MB in the end (delta: 23.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4189.35 ms. Allocated memory was 205.5 MB in the beginning and 274.2 MB in the end (delta: 68.7 MB). Free memory was 131.6 MB in the beginning and 136.6 MB in the end (delta: -5.1 MB). Peak memory consumption was 63.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 771 VarBasedMoverChecksPositive, 34 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 48 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.9s, 85 PlacesBefore, 31 PlacesAfterwards, 78 TransitionsBefore, 21 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 3 ChoiceCompositions, 71 TotalNumberOfCompositions, 2833 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 4 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.0s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 165 SDtfs, 111 SDslu, 143 SDs, 0 SdLazy, 74 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 119 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 38 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 97 ConstructedInterpolants, 0 QuantifiedInterpolants, 2607 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...