/usr/bin/java -Xmx16000000000 -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-PN-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe035_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 01:46:41,774 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 01:46:41,776 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 01:46:41,813 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 01:46:41,814 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 01:46:41,822 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 01:46:41,825 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 01:46:41,829 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 01:46:41,831 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 01:46:41,834 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 01:46:41,835 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 01:46:41,836 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 01:46:41,836 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 01:46:41,839 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 01:46:41,842 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 01:46:41,844 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 01:46:41,845 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 01:46:41,846 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 01:46:41,847 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 01:46:41,857 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 01:46:41,859 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 01:46:41,860 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 01:46:41,861 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 01:46:41,861 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 01:46:41,873 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 01:46:41,882 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 01:46:41,882 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 01:46:41,887 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 01:46:41,888 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 01:46:41,889 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 01:46:41,889 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 01:46:41,889 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 01:46:41,889 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 01:46:41,890 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 01:46:41,891 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 01:46:41,892 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 01:46:41,893 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-PN-SemanticLbe.epf [2020-10-16 01:46:41,930 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 01:46:41,930 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 01:46:41,932 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 01:46:41,932 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 01:46:41,932 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 01:46:41,932 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 01:46:41,933 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 01:46:41,933 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 01:46:41,933 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 01:46:41,933 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 01:46:41,934 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 01:46:41,934 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 01:46:41,935 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 01:46:41,935 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 01:46:41,935 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 01:46:41,936 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 01:46:41,936 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 01:46:41,936 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 01:46:41,936 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 01:46:41,936 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 01:46:41,937 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 01:46:41,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:46:41,937 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 01:46:41,937 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 01:46:41,938 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 01:46:41,938 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 01:46:41,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 01:46:41,938 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 01:46:41,938 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 01:46:42,234 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 01:46:42,245 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 01:46:42,248 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 01:46:42,249 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 01:46:42,250 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 01:46:42,251 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_tso.opt.i [2020-10-16 01:46:42,309 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d764b1530/49a92069e67e4591b18ca1b2f085cf98/FLAGe1c53cf80 [2020-10-16 01:46:42,830 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 01:46:42,831 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_tso.opt.i [2020-10-16 01:46:42,854 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d764b1530/49a92069e67e4591b18ca1b2f085cf98/FLAGe1c53cf80 [2020-10-16 01:46:43,147 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d764b1530/49a92069e67e4591b18ca1b2f085cf98 [2020-10-16 01:46:43,155 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 01:46:43,157 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 01:46:43,158 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 01:46:43,158 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 01:46:43,161 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 01:46:43,162 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:46:43" (1/1) ... [2020-10-16 01:46:43,164 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e86d97c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:43, skipping insertion in model container [2020-10-16 01:46:43,164 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:46:43" (1/1) ... [2020-10-16 01:46:43,172 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 01:46:43,216 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 01:46:43,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:46:43,760 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 01:46:43,835 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:46:43,906 INFO L208 MainTranslator]: Completed translation [2020-10-16 01:46:43,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:43 WrapperNode [2020-10-16 01:46:43,907 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 01:46:43,908 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 01:46:43,908 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 01:46:43,908 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 01:46:43,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:43" (1/1) ... [2020-10-16 01:46:43,934 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:43" (1/1) ... [2020-10-16 01:46:43,955 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 01:46:43,955 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 01:46:43,955 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 01:46:43,956 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 01:46:43,963 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:43" (1/1) ... [2020-10-16 01:46:43,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:43" (1/1) ... [2020-10-16 01:46:43,966 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:43" (1/1) ... [2020-10-16 01:46:43,967 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:43" (1/1) ... [2020-10-16 01:46:43,974 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:43" (1/1) ... [2020-10-16 01:46:43,976 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:43" (1/1) ... [2020-10-16 01:46:43,978 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:43" (1/1) ... [2020-10-16 01:46:43,981 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 01:46:43,982 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 01:46:43,982 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 01:46:43,982 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 01:46:43,983 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:43" (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 [2020-10-16 01:46:44,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 01:46:44,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 01:46:44,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 01:46:44,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 01:46:44,059 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 01:46:44,059 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 01:46:44,060 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 01:46:44,060 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 01:46:44,060 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 01:46:44,060 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 01:46:44,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 01:46:44,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 01:46:44,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 01:46:44,062 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 01:46:44,402 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 01:46:44,402 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 01:46:44,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:46:44 BoogieIcfgContainer [2020-10-16 01:46:44,405 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 01:46:44,406 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 01:46:44,406 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 01:46:44,410 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 01:46:44,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:46:43" (1/3) ... [2020-10-16 01:46:44,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7217c56c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:46:44, skipping insertion in model container [2020-10-16 01:46:44,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:43" (2/3) ... [2020-10-16 01:46:44,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7217c56c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:46:44, skipping insertion in model container [2020-10-16 01:46:44,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:46:44" (3/3) ... [2020-10-16 01:46:44,413 INFO L111 eAbstractionObserver]: Analyzing ICFG safe035_tso.opt.i [2020-10-16 01:46:44,423 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 01:46:44,429 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 01:46:44,430 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 01:46:44,458 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:44,458 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:44,459 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:44,459 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:44,460 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:44,460 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:44,460 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:44,461 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:44,461 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:44,461 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:44,462 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:44,462 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:44,462 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:44,463 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:44,463 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:44,463 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:44,463 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:44,464 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:44,470 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:44,471 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:44,471 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:44,471 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:44,478 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:44,478 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:44,479 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:44,479 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:44,481 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:44,482 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:44,482 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:44,482 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:44,502 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 01:46:44,524 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:46:44,524 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:46:44,524 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:46:44,525 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:46:44,525 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:46:44,525 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:46:44,525 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:46:44,525 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:46:44,539 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 01:46:44,586 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-16 01:46:44,587 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:46:44,594 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 01:46:44,594 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 01:46:44,606 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 121 flow [2020-10-16 01:46:44,608 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:46:44,611 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 56 transitions, 121 flow [2020-10-16 01:46:44,613 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 56 transitions, 121 flow [2020-10-16 01:46:44,613 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 65 places, 56 transitions, 121 flow [2020-10-16 01:46:44,633 INFO L129 PetriNetUnfolder]: 1/56 cut-off events. [2020-10-16 01:46:44,633 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:46:44,634 INFO L80 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 56 events. 1/56 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2020-10-16 01:46:44,636 INFO L117 LiptonReduction]: Number of co-enabled transitions 864 [2020-10-16 01:46:46,126 INFO L132 LiptonReduction]: Checked pairs total: 1608 [2020-10-16 01:46:46,127 INFO L134 LiptonReduction]: Total number of compositions: 44 [2020-10-16 01:46:46,131 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1524 [2020-10-16 01:46:46,144 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2020-10-16 01:46:46,144 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:46:46,144 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:46:46,145 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:46:46,146 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:46:46,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:46:46,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1901339760, now seen corresponding path program 1 times [2020-10-16 01:46:46,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:46:46,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246758664] [2020-10-16 01:46:46,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:46:46,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:46:46,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:46:46,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246758664] [2020-10-16 01:46:46,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:46:46,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:46:46,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760140121] [2020-10-16 01:46:46,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:46:46,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:46:46,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:46:46,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:46:46,409 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 114 [2020-10-16 01:46:46,411 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states. [2020-10-16 01:46:46,411 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:46:46,411 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 114 [2020-10-16 01:46:46,413 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:46:46,459 INFO L129 PetriNetUnfolder]: 24/68 cut-off events. [2020-10-16 01:46:46,459 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:46:46,460 INFO L80 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 68 events. 24/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 220 event pairs, 14 based on Foata normal form. 1/67 useless extension candidates. Maximal degree in co-relation 115. Up to 45 conditions per place. [2020-10-16 01:46:46,462 INFO L132 encePairwiseOnDemand]: 110/114 looper letters, 6 selfloop transitions, 3 changer transitions 0/20 dead transitions. [2020-10-16 01:46:46,462 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 20 transitions, 67 flow [2020-10-16 01:46:46,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:46:46,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:46:46,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 289 transitions. [2020-10-16 01:46:46,480 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8450292397660819 [2020-10-16 01:46:46,481 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 289 transitions. [2020-10-16 01:46:46,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 289 transitions. [2020-10-16 01:46:46,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:46:46,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 289 transitions. [2020-10-16 01:46:46,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:46:46,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:46:46,498 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:46:46,501 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 289 transitions. [2020-10-16 01:46:46,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 20 transitions, 67 flow [2020-10-16 01:46:46,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 20 transitions, 64 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 01:46:46,508 INFO L241 Difference]: Finished difference. Result has 27 places, 19 transitions, 59 flow [2020-10-16 01:46:46,511 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2020-10-16 01:46:46,512 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2020-10-16 01:46:46,512 INFO L481 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 59 flow [2020-10-16 01:46:46,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:46:46,513 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:46:46,513 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:46:46,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 01:46:46,514 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:46:46,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:46:46,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1673665248, now seen corresponding path program 1 times [2020-10-16 01:46:46,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:46:46,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210317650] [2020-10-16 01:46:46,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:46:46,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:46:46,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:46:46,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210317650] [2020-10-16 01:46:46,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:46:46,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:46:46,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665436259] [2020-10-16 01:46:46,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:46:46,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:46:46,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:46:46,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:46:46,600 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 114 [2020-10-16 01:46:46,601 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 59 flow. Second operand 3 states. [2020-10-16 01:46:46,601 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:46:46,601 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 114 [2020-10-16 01:46:46,601 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:46:46,614 INFO L129 PetriNetUnfolder]: 2/23 cut-off events. [2020-10-16 01:46:46,614 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2020-10-16 01:46:46,615 INFO L80 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 23 events. 2/23 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 31 event pairs, 0 based on Foata normal form. 3/26 useless extension candidates. Maximal degree in co-relation 38. Up to 8 conditions per place. [2020-10-16 01:46:46,615 INFO L132 encePairwiseOnDemand]: 111/114 looper letters, 1 selfloop transitions, 2 changer transitions 0/19 dead transitions. [2020-10-16 01:46:46,615 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 19 transitions, 65 flow [2020-10-16 01:46:46,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:46:46,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:46:46,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 292 transitions. [2020-10-16 01:46:46,619 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8538011695906432 [2020-10-16 01:46:46,619 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 292 transitions. [2020-10-16 01:46:46,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 292 transitions. [2020-10-16 01:46:46,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:46:46,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 292 transitions. [2020-10-16 01:46:46,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:46:46,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:46:46,623 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:46:46,624 INFO L185 Difference]: Start difference. First operand has 27 places, 19 transitions, 59 flow. Second operand 3 states and 292 transitions. [2020-10-16 01:46:46,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 19 transitions, 65 flow [2020-10-16 01:46:46,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 19 transitions, 62 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:46:46,625 INFO L241 Difference]: Finished difference. Result has 29 places, 19 transitions, 64 flow [2020-10-16 01:46:46,626 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=29, PETRI_TRANSITIONS=19} [2020-10-16 01:46:46,626 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2020-10-16 01:46:46,627 INFO L481 AbstractCegarLoop]: Abstraction has has 29 places, 19 transitions, 64 flow [2020-10-16 01:46:46,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:46:46,627 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:46:46,627 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:46:46,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 01:46:46,628 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:46:46,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:46:46,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1826245309, now seen corresponding path program 1 times [2020-10-16 01:46:46,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:46:46,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768515540] [2020-10-16 01:46:46,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:46:46,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:46:46,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:46:46,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768515540] [2020-10-16 01:46:46,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:46:46,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:46:46,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112960324] [2020-10-16 01:46:46,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:46:46,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:46:46,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:46:46,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:46:46,685 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 114 [2020-10-16 01:46:46,686 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 19 transitions, 64 flow. Second operand 3 states. [2020-10-16 01:46:46,686 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:46:46,686 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 114 [2020-10-16 01:46:46,686 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:46:46,755 INFO L129 PetriNetUnfolder]: 10/50 cut-off events. [2020-10-16 01:46:46,756 INFO L130 PetriNetUnfolder]: For 17/20 co-relation queries the response was YES. [2020-10-16 01:46:46,756 INFO L80 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 50 events. 10/50 cut-off events. For 17/20 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 155 event pairs, 4 based on Foata normal form. 4/52 useless extension candidates. Maximal degree in co-relation 105. Up to 17 conditions per place. [2020-10-16 01:46:46,757 INFO L132 encePairwiseOnDemand]: 111/114 looper letters, 6 selfloop transitions, 2 changer transitions 2/21 dead transitions. [2020-10-16 01:46:46,757 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 21 transitions, 91 flow [2020-10-16 01:46:46,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:46:46,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:46:46,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 289 transitions. [2020-10-16 01:46:46,759 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8450292397660819 [2020-10-16 01:46:46,759 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 289 transitions. [2020-10-16 01:46:46,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 289 transitions. [2020-10-16 01:46:46,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:46:46,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 289 transitions. [2020-10-16 01:46:46,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:46:46,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:46:46,762 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:46:46,762 INFO L185 Difference]: Start difference. First operand has 29 places, 19 transitions, 64 flow. Second operand 3 states and 289 transitions. [2020-10-16 01:46:46,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 21 transitions, 91 flow [2020-10-16 01:46:46,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 21 transitions, 85 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:46:46,764 INFO L241 Difference]: Finished difference. Result has 30 places, 17 transitions, 60 flow [2020-10-16 01:46:46,765 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=30, PETRI_TRANSITIONS=17} [2020-10-16 01:46:46,765 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2020-10-16 01:46:46,765 INFO L481 AbstractCegarLoop]: Abstraction has has 30 places, 17 transitions, 60 flow [2020-10-16 01:46:46,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:46:46,765 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:46:46,766 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:46:46,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 01:46:46,766 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:46:46,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:46:46,766 INFO L82 PathProgramCache]: Analyzing trace with hash 779028889, now seen corresponding path program 1 times [2020-10-16 01:46:46,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:46:46,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259354051] [2020-10-16 01:46:46,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:46:46,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:46:46,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:46:46,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259354051] [2020-10-16 01:46:46,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:46:46,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:46:46,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643689877] [2020-10-16 01:46:46,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:46:46,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:46:46,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:46:46,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:46:46,828 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 114 [2020-10-16 01:46:46,828 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 17 transitions, 60 flow. Second operand 4 states. [2020-10-16 01:46:46,829 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:46:46,829 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 114 [2020-10-16 01:46:46,829 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:46:46,877 INFO L129 PetriNetUnfolder]: 28/69 cut-off events. [2020-10-16 01:46:46,877 INFO L130 PetriNetUnfolder]: For 71/81 co-relation queries the response was YES. [2020-10-16 01:46:46,878 INFO L80 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 69 events. 28/69 cut-off events. For 71/81 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 227 event pairs, 2 based on Foata normal form. 9/75 useless extension candidates. Maximal degree in co-relation 155. Up to 33 conditions per place. [2020-10-16 01:46:46,879 INFO L132 encePairwiseOnDemand]: 108/114 looper letters, 7 selfloop transitions, 5 changer transitions 1/24 dead transitions. [2020-10-16 01:46:46,879 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 24 transitions, 100 flow [2020-10-16 01:46:46,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:46:46,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:46:46,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 347 transitions. [2020-10-16 01:46:46,881 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7609649122807017 [2020-10-16 01:46:46,881 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 347 transitions. [2020-10-16 01:46:46,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 347 transitions. [2020-10-16 01:46:46,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:46:46,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 347 transitions. [2020-10-16 01:46:46,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:46:46,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:46:46,884 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:46:46,885 INFO L185 Difference]: Start difference. First operand has 30 places, 17 transitions, 60 flow. Second operand 4 states and 347 transitions. [2020-10-16 01:46:46,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 24 transitions, 100 flow [2020-10-16 01:46:46,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 24 transitions, 92 flow, removed 1 selfloop flow, removed 3 redundant places. [2020-10-16 01:46:46,887 INFO L241 Difference]: Finished difference. Result has 32 places, 20 transitions, 86 flow [2020-10-16 01:46:46,887 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=86, PETRI_PLACES=32, PETRI_TRANSITIONS=20} [2020-10-16 01:46:46,887 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2020-10-16 01:46:46,887 INFO L481 AbstractCegarLoop]: Abstraction has has 32 places, 20 transitions, 86 flow [2020-10-16 01:46:46,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:46:46,888 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:46:46,888 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:46:46,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 01:46:46,888 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:46:46,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:46:46,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1620036717, now seen corresponding path program 1 times [2020-10-16 01:46:46,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:46:46,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803629884] [2020-10-16 01:46:46,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:46:46,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:46:46,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:46:46,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803629884] [2020-10-16 01:46:46,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:46:46,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:46:46,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146341765] [2020-10-16 01:46:46,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:46:46,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:46:46,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:46:46,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:46:46,961 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 114 [2020-10-16 01:46:46,962 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 20 transitions, 86 flow. Second operand 5 states. [2020-10-16 01:46:46,962 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:46:46,962 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 114 [2020-10-16 01:46:46,962 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:46:47,030 INFO L129 PetriNetUnfolder]: 16/50 cut-off events. [2020-10-16 01:46:47,031 INFO L130 PetriNetUnfolder]: For 107/116 co-relation queries the response was YES. [2020-10-16 01:46:47,035 INFO L80 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 50 events. 16/50 cut-off events. For 107/116 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 128 event pairs, 0 based on Foata normal form. 11/60 useless extension candidates. Maximal degree in co-relation 158. Up to 32 conditions per place. [2020-10-16 01:46:47,037 INFO L132 encePairwiseOnDemand]: 108/114 looper letters, 7 selfloop transitions, 8 changer transitions 1/27 dead transitions. [2020-10-16 01:46:47,037 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 27 transitions, 147 flow [2020-10-16 01:46:47,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 01:46:47,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 01:46:47,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 433 transitions. [2020-10-16 01:46:47,040 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7596491228070176 [2020-10-16 01:46:47,040 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 433 transitions. [2020-10-16 01:46:47,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 433 transitions. [2020-10-16 01:46:47,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:46:47,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 433 transitions. [2020-10-16 01:46:47,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 01:46:47,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 01:46:47,043 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 01:46:47,043 INFO L185 Difference]: Start difference. First operand has 32 places, 20 transitions, 86 flow. Second operand 5 states and 433 transitions. [2020-10-16 01:46:47,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 27 transitions, 147 flow [2020-10-16 01:46:47,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 27 transitions, 133 flow, removed 2 selfloop flow, removed 3 redundant places. [2020-10-16 01:46:47,048 INFO L241 Difference]: Finished difference. Result has 35 places, 23 transitions, 122 flow [2020-10-16 01:46:47,048 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=122, PETRI_PLACES=35, PETRI_TRANSITIONS=23} [2020-10-16 01:46:47,048 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2020-10-16 01:46:47,048 INFO L481 AbstractCegarLoop]: Abstraction has has 35 places, 23 transitions, 122 flow [2020-10-16 01:46:47,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:46:47,049 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:46:47,050 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:46:47,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 01:46:47,050 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:46:47,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:46:47,050 INFO L82 PathProgramCache]: Analyzing trace with hash -2124824923, now seen corresponding path program 1 times [2020-10-16 01:46:47,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:46:47,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842209744] [2020-10-16 01:46:47,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:46:47,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:46:47,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:46:47,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842209744] [2020-10-16 01:46:47,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:46:47,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 01:46:47,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976683720] [2020-10-16 01:46:47,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 01:46:47,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:46:47,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 01:46:47,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 01:46:47,108 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 114 [2020-10-16 01:46:47,108 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 23 transitions, 122 flow. Second operand 6 states. [2020-10-16 01:46:47,108 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:46:47,108 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 114 [2020-10-16 01:46:47,109 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:46:47,167 INFO L129 PetriNetUnfolder]: 7/32 cut-off events. [2020-10-16 01:46:47,168 INFO L130 PetriNetUnfolder]: For 87/105 co-relation queries the response was YES. [2020-10-16 01:46:47,168 INFO L80 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 32 events. 7/32 cut-off events. For 87/105 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 12/43 useless extension candidates. Maximal degree in co-relation 109. Up to 17 conditions per place. [2020-10-16 01:46:47,169 INFO L132 encePairwiseOnDemand]: 108/114 looper letters, 1 selfloop transitions, 11 changer transitions 1/24 dead transitions. [2020-10-16 01:46:47,169 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 24 transitions, 154 flow [2020-10-16 01:46:47,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 01:46:47,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 01:46:47,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 513 transitions. [2020-10-16 01:46:47,171 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.75 [2020-10-16 01:46:47,172 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 513 transitions. [2020-10-16 01:46:47,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 513 transitions. [2020-10-16 01:46:47,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:46:47,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 513 transitions. [2020-10-16 01:46:47,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 01:46:47,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 01:46:47,175 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 01:46:47,175 INFO L185 Difference]: Start difference. First operand has 35 places, 23 transitions, 122 flow. Second operand 6 states and 513 transitions. [2020-10-16 01:46:47,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 24 transitions, 154 flow [2020-10-16 01:46:47,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 24 transitions, 126 flow, removed 4 selfloop flow, removed 5 redundant places. [2020-10-16 01:46:47,178 INFO L241 Difference]: Finished difference. Result has 37 places, 23 transitions, 134 flow [2020-10-16 01:46:47,178 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=134, PETRI_PLACES=37, PETRI_TRANSITIONS=23} [2020-10-16 01:46:47,178 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2020-10-16 01:46:47,179 INFO L481 AbstractCegarLoop]: Abstraction has has 37 places, 23 transitions, 134 flow [2020-10-16 01:46:47,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 01:46:47,179 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:46:47,179 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:46:47,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 01:46:47,179 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:46:47,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:46:47,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1524692014, now seen corresponding path program 1 times [2020-10-16 01:46:47,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:46:47,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572638005] [2020-10-16 01:46:47,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:46:47,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:46:47,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:46:47,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572638005] [2020-10-16 01:46:47,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:46:47,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:46:47,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824873134] [2020-10-16 01:46:47,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:46:47,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:46:47,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:46:47,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:46:47,216 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 114 [2020-10-16 01:46:47,216 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 23 transitions, 134 flow. Second operand 4 states. [2020-10-16 01:46:47,216 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:46:47,216 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 114 [2020-10-16 01:46:47,216 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:46:47,237 INFO L129 PetriNetUnfolder]: 10/41 cut-off events. [2020-10-16 01:46:47,237 INFO L130 PetriNetUnfolder]: For 87/91 co-relation queries the response was YES. [2020-10-16 01:46:47,238 INFO L80 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 41 events. 10/41 cut-off events. For 87/91 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 86 event pairs, 0 based on Foata normal form. 1/40 useless extension candidates. Maximal degree in co-relation 135. Up to 20 conditions per place. [2020-10-16 01:46:47,238 INFO L132 encePairwiseOnDemand]: 111/114 looper letters, 3 selfloop transitions, 1 changer transitions 1/24 dead transitions. [2020-10-16 01:46:47,238 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 24 transitions, 146 flow [2020-10-16 01:46:47,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:46:47,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:46:47,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 370 transitions. [2020-10-16 01:46:47,241 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8114035087719298 [2020-10-16 01:46:47,241 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 370 transitions. [2020-10-16 01:46:47,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 370 transitions. [2020-10-16 01:46:47,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:46:47,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 370 transitions. [2020-10-16 01:46:47,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:46:47,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:46:47,244 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:46:47,244 INFO L185 Difference]: Start difference. First operand has 37 places, 23 transitions, 134 flow. Second operand 4 states and 370 transitions. [2020-10-16 01:46:47,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 24 transitions, 146 flow [2020-10-16 01:46:47,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 24 transitions, 82 flow, removed 12 selfloop flow, removed 10 redundant places. [2020-10-16 01:46:47,246 INFO L241 Difference]: Finished difference. Result has 32 places, 23 transitions, 77 flow [2020-10-16 01:46:47,246 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=77, PETRI_PLACES=32, PETRI_TRANSITIONS=23} [2020-10-16 01:46:47,247 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2020-10-16 01:46:47,247 INFO L481 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 77 flow [2020-10-16 01:46:47,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:46:47,247 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:46:47,247 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:46:47,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 01:46:47,248 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:46:47,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:46:47,248 INFO L82 PathProgramCache]: Analyzing trace with hash -920561962, now seen corresponding path program 2 times [2020-10-16 01:46:47,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:46:47,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071226327] [2020-10-16 01:46:47,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:46:47,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:46:47,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:46:47,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071226327] [2020-10-16 01:46:47,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:46:47,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:46:47,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850373520] [2020-10-16 01:46:47,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:46:47,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:46:47,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:46:47,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:46:47,283 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 114 [2020-10-16 01:46:47,284 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 77 flow. Second operand 4 states. [2020-10-16 01:46:47,284 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:46:47,284 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 114 [2020-10-16 01:46:47,284 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:46:47,307 INFO L129 PetriNetUnfolder]: 14/56 cut-off events. [2020-10-16 01:46:47,308 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-16 01:46:47,308 INFO L80 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 56 events. 14/56 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 163 event pairs, 2 based on Foata normal form. 1/55 useless extension candidates. Maximal degree in co-relation 113. Up to 12 conditions per place. [2020-10-16 01:46:47,309 INFO L132 encePairwiseOnDemand]: 111/114 looper letters, 0 selfloop transitions, 0 changer transitions 25/25 dead transitions. [2020-10-16 01:46:47,309 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 25 transitions, 95 flow [2020-10-16 01:46:47,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:46:47,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:46:47,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 365 transitions. [2020-10-16 01:46:47,311 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8004385964912281 [2020-10-16 01:46:47,311 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 365 transitions. [2020-10-16 01:46:47,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 365 transitions. [2020-10-16 01:46:47,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:46:47,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 365 transitions. [2020-10-16 01:46:47,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:46:47,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:46:47,314 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:46:47,314 INFO L185 Difference]: Start difference. First operand has 32 places, 23 transitions, 77 flow. Second operand 4 states and 365 transitions. [2020-10-16 01:46:47,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 25 transitions, 95 flow [2020-10-16 01:46:47,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 25 transitions, 94 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:46:47,316 INFO L241 Difference]: Finished difference. Result has 32 places, 0 transitions, 0 flow [2020-10-16 01:46:47,316 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=32, PETRI_TRANSITIONS=0} [2020-10-16 01:46:47,316 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2020-10-16 01:46:47,317 INFO L481 AbstractCegarLoop]: Abstraction has has 32 places, 0 transitions, 0 flow [2020-10-16 01:46:47,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:46:47,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 01:46:47,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:46:47 BasicIcfg [2020-10-16 01:46:47,322 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 01:46:47,325 INFO L168 Benchmark]: Toolchain (without parser) took 4167.85 ms. Allocated memory was 246.4 MB in the beginning and 368.1 MB in the end (delta: 121.6 MB). Free memory was 201.5 MB in the beginning and 246.0 MB in the end (delta: -44.4 MB). Peak memory consumption was 77.2 MB. Max. memory is 14.2 GB. [2020-10-16 01:46:47,326 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 246.4 MB. Free memory is still 222.8 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 01:46:47,327 INFO L168 Benchmark]: CACSL2BoogieTranslator took 750.10 ms. Allocated memory was 246.4 MB in the beginning and 301.5 MB in the end (delta: 55.1 MB). Free memory was 201.5 MB in the beginning and 252.1 MB in the end (delta: -50.6 MB). Peak memory consumption was 26.7 MB. Max. memory is 14.2 GB. [2020-10-16 01:46:47,328 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.98 ms. Allocated memory is still 301.5 MB. Free memory was 252.1 MB in the beginning and 249.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:46:47,328 INFO L168 Benchmark]: Boogie Preprocessor took 26.04 ms. Allocated memory is still 301.5 MB. Free memory was 249.6 MB in the beginning and 247.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:46:47,329 INFO L168 Benchmark]: RCFGBuilder took 423.33 ms. Allocated memory is still 301.5 MB. Free memory was 247.1 MB in the beginning and 225.2 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-16 01:46:47,330 INFO L168 Benchmark]: TraceAbstraction took 2916.25 ms. Allocated memory was 301.5 MB in the beginning and 368.1 MB in the end (delta: 66.6 MB). Free memory was 225.2 MB in the beginning and 246.0 MB in the end (delta: -20.7 MB). Peak memory consumption was 45.9 MB. Max. memory is 14.2 GB. [2020-10-16 01:46:47,334 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 246.4 MB. Free memory is still 222.8 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 750.10 ms. Allocated memory was 246.4 MB in the beginning and 301.5 MB in the end (delta: 55.1 MB). Free memory was 201.5 MB in the beginning and 252.1 MB in the end (delta: -50.6 MB). Peak memory consumption was 26.7 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 46.98 ms. Allocated memory is still 301.5 MB. Free memory was 252.1 MB in the beginning and 249.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 26.04 ms. Allocated memory is still 301.5 MB. Free memory was 249.6 MB in the beginning and 247.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 423.33 ms. Allocated memory is still 301.5 MB. Free memory was 247.1 MB in the beginning and 225.2 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2916.25 ms. Allocated memory was 301.5 MB in the beginning and 368.1 MB in the end (delta: 66.6 MB). Free memory was 225.2 MB in the beginning and 246.0 MB in the end (delta: -20.7 MB). Peak memory consumption was 45.9 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 592 VarBasedMoverChecksPositive, 54 VarBasedMoverChecksNegative, 10 SemBasedMoverChecksPositive, 44 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 72 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.5s, 65 PlacesBefore, 27 PlacesAfterwards, 56 TransitionsBefore, 17 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 44 TotalNumberOfCompositions, 1608 MoverChecksTotal - 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 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 33 SDtfs, 12 SDslu, 16 SDs, 0 SdLazy, 81 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=134occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 2828 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...