/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/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe006_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 15:00:23,825 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 15:00:23,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 15:00:23,839 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 15:00:23,839 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 15:00:23,841 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 15:00:23,842 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 15:00:23,844 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 15:00:23,845 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 15:00:23,846 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 15:00:23,847 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 15:00:23,848 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 15:00:23,848 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 15:00:23,849 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 15:00:23,850 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 15:00:23,852 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 15:00:23,853 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 15:00:23,854 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 15:00:23,857 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 15:00:23,859 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 15:00:23,862 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 15:00:23,865 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 15:00:23,869 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 15:00:23,870 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 15:00:23,872 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 15:00:23,872 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 15:00:23,872 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 15:00:23,873 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 15:00:23,873 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 15:00:23,874 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 15:00:23,874 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 15:00:23,875 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 15:00:23,876 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 15:00:23,876 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 15:00:23,877 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 15:00:23,877 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 15:00:23,878 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 15:00:23,878 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 15:00:23,878 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 15:00:23,879 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 15:00:23,880 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 15:00:23,881 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-McrStrategy.epf [2020-04-18 15:00:23,896 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 15:00:23,897 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 15:00:23,898 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 15:00:23,898 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 15:00:23,898 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 15:00:23,899 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 15:00:23,899 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 15:00:23,899 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 15:00:23,899 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 15:00:23,899 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 15:00:23,899 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 15:00:23,900 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 15:00:23,900 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 15:00:23,900 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 15:00:23,900 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 15:00:23,900 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 15:00:23,901 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 15:00:23,901 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 15:00:23,901 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 15:00:23,901 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 15:00:23,901 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 15:00:23,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:00:23,902 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 15:00:23,902 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 15:00:23,902 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 15:00:23,902 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 15:00:23,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 15:00:23,903 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 15:00:23,903 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 15:00:23,903 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 15:00:23,903 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 15:00:24,161 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 15:00:24,176 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 15:00:24,179 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 15:00:24,180 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 15:00:24,181 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 15:00:24,182 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe006_pso.opt.i [2020-04-18 15:00:24,248 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/633ac18fc/ae9ebb41fdf841e1b320444c7ff75d59/FLAG48ae7dc6f [2020-04-18 15:00:24,820 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 15:00:24,821 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe006_pso.opt.i [2020-04-18 15:00:24,836 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/633ac18fc/ae9ebb41fdf841e1b320444c7ff75d59/FLAG48ae7dc6f [2020-04-18 15:00:25,129 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/633ac18fc/ae9ebb41fdf841e1b320444c7ff75d59 [2020-04-18 15:00:25,137 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 15:00:25,159 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 15:00:25,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 15:00:25,161 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 15:00:25,164 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 15:00:25,165 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:00:25" (1/1) ... [2020-04-18 15:00:25,168 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36b347a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:00:25, skipping insertion in model container [2020-04-18 15:00:25,168 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:00:25" (1/1) ... [2020-04-18 15:00:25,176 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 15:00:25,225 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 15:00:25,679 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:00:25,694 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 15:00:25,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:00:25,851 INFO L208 MainTranslator]: Completed translation [2020-04-18 15:00:25,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:00:25 WrapperNode [2020-04-18 15:00:25,852 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 15:00:25,852 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 15:00:25,853 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 15:00:25,853 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 15:00:25,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:00:25" (1/1) ... [2020-04-18 15:00:25,881 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:00:25" (1/1) ... [2020-04-18 15:00:25,907 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 15:00:25,907 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 15:00:25,907 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 15:00:25,908 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 15:00:25,916 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:00:25" (1/1) ... [2020-04-18 15:00:25,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:00:25" (1/1) ... [2020-04-18 15:00:25,920 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:00:25" (1/1) ... [2020-04-18 15:00:25,921 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:00:25" (1/1) ... [2020-04-18 15:00:25,927 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:00:25" (1/1) ... [2020-04-18 15:00:25,929 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:00:25" (1/1) ... [2020-04-18 15:00:25,931 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:00:25" (1/1) ... [2020-04-18 15:00:25,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 15:00:25,935 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 15:00:25,935 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 15:00:25,935 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 15:00:25,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:00:25" (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 [2020-04-18 15:00:25,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 15:00:25,999 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 15:00:25,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 15:00:25,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 15:00:25,999 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 15:00:26,000 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 15:00:26,000 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 15:00:26,000 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 15:00:26,000 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 15:00:26,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 15:00:26,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 15:00:26,002 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 15:00:26,367 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 15:00:26,368 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 15:00:26,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:00:26 BoogieIcfgContainer [2020-04-18 15:00:26,372 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 15:00:26,374 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 15:00:26,374 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 15:00:26,377 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 15:00:26,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:00:25" (1/3) ... [2020-04-18 15:00:26,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29fe9b45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:00:26, skipping insertion in model container [2020-04-18 15:00:26,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:00:25" (2/3) ... [2020-04-18 15:00:26,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29fe9b45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:00:26, skipping insertion in model container [2020-04-18 15:00:26,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:00:26" (3/3) ... [2020-04-18 15:00:26,381 INFO L109 eAbstractionObserver]: Analyzing ICFG safe006_pso.opt.i [2020-04-18 15:00:26,393 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 15:00:26,393 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 15:00:26,400 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 15:00:26,401 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 15:00:26,423 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:00:26,424 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:00:26,424 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:00:26,424 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:00:26,425 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:00:26,425 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:00:26,425 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:00:26,426 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:00:26,426 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:00:26,427 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:00:26,427 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:00:26,428 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:00:26,431 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:00:26,432 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:00:26,432 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:00:26,432 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:00:26,439 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:00:26,439 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:00:26,440 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:00:26,440 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:00:26,456 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-04-18 15:00:26,475 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 15:00:26,475 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 15:00:26,475 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 15:00:26,475 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 15:00:26,476 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 15:00:26,476 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 15:00:26,476 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 15:00:26,476 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 15:00:26,490 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 56 transitions, 122 flow [2020-04-18 15:00:26,491 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 56 transitions, 122 flow [2020-04-18 15:00:26,528 INFO L129 PetriNetUnfolder]: 2/54 cut-off events. [2020-04-18 15:00:26,528 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:00:26,533 INFO L80 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 54 events. 2/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-04-18 15:00:26,536 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 56 transitions, 122 flow [2020-04-18 15:00:26,555 INFO L129 PetriNetUnfolder]: 2/54 cut-off events. [2020-04-18 15:00:26,555 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:00:26,556 INFO L80 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 54 events. 2/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-04-18 15:00:26,558 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 672 [2020-04-18 15:00:26,560 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 15:00:27,929 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1165 [2020-04-18 15:00:27,930 INFO L214 etLargeBlockEncoding]: Total number of compositions: 48 [2020-04-18 15:00:27,934 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2020-04-18 15:00:27,947 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-04-18 15:00:27,950 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-04-18 15:00:27,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-18 15:00:27,959 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:00:27,960 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-04-18 15:00:27,960 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:00:27,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:00:27,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1988358065, now seen corresponding path program 1 times [2020-04-18 15:00:27,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:00:27,975 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [904263206] [2020-04-18 15:00:27,990 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:00:28,000 INFO L259 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-04-18 15:00:28,002 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2020-04-18 15:00:28,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-18 15:00:28,002 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:00:28,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:00:28,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1988358065, now seen corresponding path program 2 times [2020-04-18 15:00:28,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:00:28,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655869893] [2020-04-18 15:00:28,008 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:00:28,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:00:28,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:00:28,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655869893] [2020-04-18 15:00:28,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:00:28,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 15:00:28,228 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:00:28,229 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:00:28,230 INFO L259 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-04-18 15:00:28,231 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:00:28,240 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:00:28,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:00:28,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:00:28,246 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2020-04-18 15:00:28,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:00:28,250 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2020-04-18 15:00:28,250 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2020-04-18 15:00:28,250 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:00:28,251 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [904263206] [2020-04-18 15:00:28,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:00:28,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 15:00:28,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [904263206] [2020-04-18 15:00:28,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 15:00:28,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:00:28,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:00:28,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:00:28,259 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2020-04-18 15:00:28,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:00:28,283 INFO L93 Difference]: Finished difference Result 70 states and 149 transitions. [2020-04-18 15:00:28,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 15:00:28,285 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-04-18 15:00:28,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:00:28,295 INFO L225 Difference]: With dead ends: 70 [2020-04-18 15:00:28,295 INFO L226 Difference]: Without dead ends: 54 [2020-04-18 15:00:28,296 INFO L678 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 [2020-04-18 15:00:28,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-04-18 15:00:28,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-04-18 15:00:28,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-04-18 15:00:28,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 109 transitions. [2020-04-18 15:00:28,343 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 109 transitions. Word has length 6 [2020-04-18 15:00:28,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:00:28,347 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 109 transitions. [2020-04-18 15:00:28,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 15:00:28,347 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 109 transitions. [2020-04-18 15:00:28,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-18 15:00:28,348 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:00:28,348 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:00:28,349 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:00:28,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:00:28,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1509525162, now seen corresponding path program 1 times [2020-04-18 15:00:28,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:00:28,351 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1408829870] [2020-04-18 15:00:28,352 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:00:28,353 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 11 transitions. [2020-04-18 15:00:28,354 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-04-18 15:00:28,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-18 15:00:28,355 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:00:28,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:00:28,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1509525162, now seen corresponding path program 2 times [2020-04-18 15:00:28,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:00:28,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526545156] [2020-04-18 15:00:28,356 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:00:28,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:00:28,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:00:28,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526545156] [2020-04-18 15:00:28,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:00:28,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:00:28,468 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:00:28,469 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:00:28,471 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 9 transitions. [2020-04-18 15:00:28,471 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:00:28,482 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:00:28,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:00:28,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:00:28,483 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 4 states. [2020-04-18 15:00:28,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:00:28,497 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2020-04-18 15:00:28,497 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2020-04-18 15:00:28,498 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:00:28,498 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1408829870] [2020-04-18 15:00:28,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:00:28,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:00:28,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1408829870] [2020-04-18 15:00:28,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 15:00:28,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:00:28,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:00:28,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:00:28,501 INFO L87 Difference]: Start difference. First operand 54 states and 109 transitions. Second operand 4 states. [2020-04-18 15:00:28,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:00:28,516 INFO L93 Difference]: Finished difference Result 60 states and 113 transitions. [2020-04-18 15:00:28,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 15:00:28,517 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-04-18 15:00:28,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:00:28,518 INFO L225 Difference]: With dead ends: 60 [2020-04-18 15:00:28,518 INFO L226 Difference]: Without dead ends: 36 [2020-04-18 15:00:28,519 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:00:28,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-04-18 15:00:28,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-04-18 15:00:28,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-04-18 15:00:28,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 63 transitions. [2020-04-18 15:00:28,525 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 63 transitions. Word has length 7 [2020-04-18 15:00:28,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:00:28,526 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 63 transitions. [2020-04-18 15:00:28,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 15:00:28,526 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 63 transitions. [2020-04-18 15:00:28,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:00:28,527 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:00:28,527 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:00:28,527 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:00:28,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:00:28,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1014872071, now seen corresponding path program 1 times [2020-04-18 15:00:28,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:00:28,528 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1699868532] [2020-04-18 15:00:28,529 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:00:28,530 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 45 transitions. [2020-04-18 15:00:28,530 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-04-18 15:00:28,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:00:28,531 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:00:28,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:00:28,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1045260811, now seen corresponding path program 2 times [2020-04-18 15:00:28,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:00:28,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249803999] [2020-04-18 15:00:28,532 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:00:28,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:00:28,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:00:28,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249803999] [2020-04-18 15:00:28,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:00:28,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:00:28,587 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:00:28,588 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:00:28,589 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 11 transitions. [2020-04-18 15:00:28,589 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:00:28,596 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:00:28,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:00:28,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:00:28,597 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 4 states. [2020-04-18 15:00:28,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:00:28,616 INFO L93 Difference]: Finished difference Result 29 states and 47 transitions. [2020-04-18 15:00:28,616 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 47 transitions. [2020-04-18 15:00:28,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:00:28,617 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:00:28,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:00:28,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1014872071, now seen corresponding path program 3 times [2020-04-18 15:00:28,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:00:28,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048346872] [2020-04-18 15:00:28,619 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:00:28,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:00:28,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:00:28,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048346872] [2020-04-18 15:00:28,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:00:28,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:00:28,702 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:00:28,703 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:00:28,706 INFO L259 McrAutomatonBuilder]: Finished intersection with 17 states and 23 transitions. [2020-04-18 15:00:28,706 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:00:28,776 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:00:28,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:00:28,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:00:28,777 INFO L87 Difference]: Start difference. First operand 29 states and 47 transitions. Second operand 5 states. [2020-04-18 15:00:28,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:00:28,789 INFO L93 Difference]: Finished difference Result 29 states and 47 transitions. [2020-04-18 15:00:28,789 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 47 transitions. [2020-04-18 15:00:28,790 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:00:28,790 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1699868532] [2020-04-18 15:00:28,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:00:28,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:00:28,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1699868532] [2020-04-18 15:00:28,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 15:00:28,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:00:28,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:00:28,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-04-18 15:00:28,792 INFO L87 Difference]: Start difference. First operand 36 states and 63 transitions. Second operand 7 states. [2020-04-18 15:00:28,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:00:28,827 INFO L93 Difference]: Finished difference Result 30 states and 50 transitions. [2020-04-18 15:00:28,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 15:00:28,828 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2020-04-18 15:00:28,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:00:28,828 INFO L225 Difference]: With dead ends: 30 [2020-04-18 15:00:28,829 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 15:00:28,829 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-04-18 15:00:28,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 15:00:28,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 15:00:28,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 15:00:28,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 15:00:28,830 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2020-04-18 15:00:28,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:00:28,830 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 15:00:28,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 15:00:28,831 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 15:00:28,831 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:00:28,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 03:00:28 BasicIcfg [2020-04-18 15:00:28,835 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 15:00:28,838 INFO L168 Benchmark]: Toolchain (without parser) took 3698.25 ms. Allocated memory was 136.8 MB in the beginning and 250.6 MB in the end (delta: 113.8 MB). Free memory was 98.5 MB in the beginning and 169.1 MB in the end (delta: -70.6 MB). Peak memory consumption was 43.2 MB. Max. memory is 7.1 GB. [2020-04-18 15:00:28,839 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 136.8 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-18 15:00:28,840 INFO L168 Benchmark]: CACSL2BoogieTranslator took 691.71 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 96.6 MB in the beginning and 157.8 MB in the end (delta: -61.2 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. [2020-04-18 15:00:28,840 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.59 ms. Allocated memory is still 200.8 MB. Free memory was 157.8 MB in the beginning and 155.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 15:00:28,841 INFO L168 Benchmark]: Boogie Preprocessor took 27.08 ms. Allocated memory is still 200.8 MB. Free memory was 155.7 MB in the beginning and 154.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 15:00:28,842 INFO L168 Benchmark]: RCFGBuilder took 437.72 ms. Allocated memory is still 200.8 MB. Free memory was 154.3 MB in the beginning and 134.9 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. [2020-04-18 15:00:28,843 INFO L168 Benchmark]: TraceAbstraction took 2461.32 ms. Allocated memory was 200.8 MB in the beginning and 250.6 MB in the end (delta: 49.8 MB). Free memory was 134.2 MB in the beginning and 169.1 MB in the end (delta: -34.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. [2020-04-18 15:00:28,847 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 136.8 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 691.71 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 96.6 MB in the beginning and 157.8 MB in the end (delta: -61.2 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 54.59 ms. Allocated memory is still 200.8 MB. Free memory was 157.8 MB in the beginning and 155.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.08 ms. Allocated memory is still 200.8 MB. Free memory was 155.7 MB in the beginning and 154.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 437.72 ms. Allocated memory is still 200.8 MB. Free memory was 154.3 MB in the beginning and 134.9 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2461.32 ms. Allocated memory was 200.8 MB in the beginning and 250.6 MB in the end (delta: 49.8 MB). Free memory was 134.2 MB in the beginning and 169.1 MB in the end (delta: -34.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.4s, 61 ProgramPointsBefore, 22 ProgramPointsAfterwards, 56 TransitionsBefore, 15 TransitionsAfterwards, 672 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 361 VarBasedMoverChecksPositive, 17 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1165 CheckedPairsTotal, 48 TotalNumberOfCompositions - PositiveResult [Line: 7]: 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 3 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.3s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 33 SDtfs, 45 SDslu, 30 SDs, 0 SdLazy, 14 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...