/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/safe018_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 01:41:21,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 01:41:21,587 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 01:41:21,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 01:41:21,630 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 01:41:21,638 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 01:41:21,641 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 01:41:21,645 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 01:41:21,647 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 01:41:21,651 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 01:41:21,652 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 01:41:21,653 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 01:41:21,653 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 01:41:21,656 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 01:41:21,659 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 01:41:21,660 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 01:41:21,662 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 01:41:21,662 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 01:41:21,666 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 01:41:21,673 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 01:41:21,674 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 01:41:21,675 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 01:41:21,677 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 01:41:21,678 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 01:41:21,687 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 01:41:21,694 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 01:41:21,694 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 01:41:21,695 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 01:41:21,696 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 01:41:21,696 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 01:41:21,697 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 01:41:21,700 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 01:41:21,700 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 01:41:21,701 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 01:41:21,701 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 01:41:21,702 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 01:41:21,703 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 01:41:21,729 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 01:41:21,729 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 01:41:21,731 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 01:41:21,731 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 01:41:21,731 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 01:41:21,731 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 01:41:21,732 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 01:41:21,732 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 01:41:21,732 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 01:41:21,732 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 01:41:21,732 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 01:41:21,733 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 01:41:21,733 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 01:41:21,733 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 01:41:21,733 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 01:41:21,733 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 01:41:21,733 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 01:41:21,734 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 01:41:21,734 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 01:41:21,734 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 01:41:21,734 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 01:41:21,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:41:21,735 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 01:41:21,735 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 01:41:21,735 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 01:41:21,735 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 01:41:21,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 01:41:21,736 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 01:41:21,736 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 01:41:22,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 01:41:22,088 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 01:41:22,093 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 01:41:22,094 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 01:41:22,095 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 01:41:22,095 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_tso.opt.i [2020-10-16 01:41:22,165 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3f7d45f5/a7048bedc8a142c6a934aee265fdd721/FLAGe104f001d [2020-10-16 01:41:22,704 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 01:41:22,705 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_tso.opt.i [2020-10-16 01:41:22,727 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3f7d45f5/a7048bedc8a142c6a934aee265fdd721/FLAGe104f001d [2020-10-16 01:41:22,970 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3f7d45f5/a7048bedc8a142c6a934aee265fdd721 [2020-10-16 01:41:22,978 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 01:41:22,980 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 01:41:22,981 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 01:41:22,981 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 01:41:22,984 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 01:41:22,985 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:41:22" (1/1) ... [2020-10-16 01:41:22,988 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7579055f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:22, skipping insertion in model container [2020-10-16 01:41:22,988 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:41:22" (1/1) ... [2020-10-16 01:41:22,996 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 01:41:23,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 01:41:23,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:41:23,550 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 01:41:23,591 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:41:23,675 INFO L208 MainTranslator]: Completed translation [2020-10-16 01:41:23,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:23 WrapperNode [2020-10-16 01:41:23,675 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 01:41:23,676 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 01:41:23,676 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 01:41:23,677 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 01:41:23,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:23" (1/1) ... [2020-10-16 01:41:23,703 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:23" (1/1) ... [2020-10-16 01:41:23,727 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 01:41:23,727 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 01:41:23,728 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 01:41:23,728 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 01:41:23,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:23" (1/1) ... [2020-10-16 01:41:23,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:23" (1/1) ... [2020-10-16 01:41:23,740 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:23" (1/1) ... [2020-10-16 01:41:23,740 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:23" (1/1) ... [2020-10-16 01:41:23,746 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:23" (1/1) ... [2020-10-16 01:41:23,748 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:23" (1/1) ... [2020-10-16 01:41:23,752 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:23" (1/1) ... [2020-10-16 01:41:23,755 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 01:41:23,756 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 01:41:23,756 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 01:41:23,756 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 01:41:23,757 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:23" (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 01:41:23,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 01:41:23,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 01:41:23,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 01:41:23,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 01:41:23,839 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 01:41:23,840 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 01:41:23,840 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 01:41:23,840 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 01:41:23,841 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 01:41:23,841 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 01:41:23,842 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 01:41:23,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 01:41:23,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 01:41:23,844 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 01:41:24,268 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 01:41:24,268 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 01:41:24,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:41:24 BoogieIcfgContainer [2020-10-16 01:41:24,270 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 01:41:24,271 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 01:41:24,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 01:41:24,275 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 01:41:24,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:41:22" (1/3) ... [2020-10-16 01:41:24,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9b2b14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:41:24, skipping insertion in model container [2020-10-16 01:41:24,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:23" (2/3) ... [2020-10-16 01:41:24,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9b2b14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:41:24, skipping insertion in model container [2020-10-16 01:41:24,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:41:24" (3/3) ... [2020-10-16 01:41:24,279 INFO L111 eAbstractionObserver]: Analyzing ICFG safe018_tso.opt.i [2020-10-16 01:41:24,289 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 01:41:24,296 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 01:41:24,297 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 01:41:24,324 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:24,325 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:24,325 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:24,325 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:24,326 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:24,326 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:24,327 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:24,327 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:24,327 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:24,327 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:24,328 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:24,328 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:24,328 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:24,329 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:24,329 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:24,329 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:24,329 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:24,330 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:24,333 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:24,334 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:24,334 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:24,334 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:24,344 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:24,344 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:24,345 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:24,345 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:24,347 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:24,348 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:24,348 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:24,348 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:24,367 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 01:41:24,387 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:41:24,387 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:41:24,388 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:41:24,388 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:41:24,388 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:41:24,388 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:41:24,388 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:41:24,388 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:41:24,401 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-16 01:41:24,449 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-16 01:41:24,449 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:41:24,462 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-10-16 01:41:24,463 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 69 transitions, 153 flow [2020-10-16 01:41:24,469 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 55 transitions, 119 flow [2020-10-16 01:41:24,471 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:41:24,474 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 55 transitions, 119 flow [2020-10-16 01:41:24,476 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 55 transitions, 119 flow [2020-10-16 01:41:24,477 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 64 places, 55 transitions, 119 flow [2020-10-16 01:41:24,496 INFO L129 PetriNetUnfolder]: 1/55 cut-off events. [2020-10-16 01:41:24,496 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:41:24,497 INFO L80 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 55 events. 1/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 42 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2020-10-16 01:41:24,500 INFO L117 LiptonReduction]: Number of co-enabled transitions 804 [2020-10-16 01:41:25,756 INFO L132 LiptonReduction]: Checked pairs total: 1380 [2020-10-16 01:41:25,756 INFO L134 LiptonReduction]: Total number of compositions: 41 [2020-10-16 01:41:25,759 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1290 [2020-10-16 01:41:25,767 INFO L129 PetriNetUnfolder]: 0/14 cut-off events. [2020-10-16 01:41:25,768 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:41:25,768 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:41:25,769 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:41:25,769 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:41:25,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:41:25,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1606569249, now seen corresponding path program 1 times [2020-10-16 01:41:25,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:41:25,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688542422] [2020-10-16 01:41:25,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:41:25,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:41:26,010 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 01:41:26,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688542422] [2020-10-16 01:41:26,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:41:26,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:41:26,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635927946] [2020-10-16 01:41:26,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:41:26,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:41:26,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:41:26,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:41:26,049 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 110 [2020-10-16 01:41:26,053 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 41 flow. Second operand 3 states. [2020-10-16 01:41:26,053 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:41:26,053 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 110 [2020-10-16 01:41:26,055 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:41:26,080 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2020-10-16 01:41:26,081 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:41:26,081 INFO L80 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 16 events. 0/16 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 1/17 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2020-10-16 01:41:26,082 INFO L132 encePairwiseOnDemand]: 107/110 looper letters, 1 selfloop transitions, 2 changer transitions 0/16 dead transitions. [2020-10-16 01:41:26,083 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 16 transitions, 47 flow [2020-10-16 01:41:26,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:41:26,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:41:26,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 286 transitions. [2020-10-16 01:41:26,108 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8666666666666667 [2020-10-16 01:41:26,109 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 286 transitions. [2020-10-16 01:41:26,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 286 transitions. [2020-10-16 01:41:26,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:41:26,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 286 transitions. [2020-10-16 01:41:26,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:41:26,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:41:26,139 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:41:26,141 INFO L185 Difference]: Start difference. First operand has 26 places, 16 transitions, 41 flow. Second operand 3 states and 286 transitions. [2020-10-16 01:41:26,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 16 transitions, 47 flow [2020-10-16 01:41:26,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 16 transitions, 44 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 01:41:26,147 INFO L241 Difference]: Finished difference. Result has 26 places, 16 transitions, 46 flow [2020-10-16 01:41:26,150 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=26, PETRI_TRANSITIONS=16} [2020-10-16 01:41:26,151 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 0 predicate places. [2020-10-16 01:41:26,151 INFO L481 AbstractCegarLoop]: Abstraction has has 26 places, 16 transitions, 46 flow [2020-10-16 01:41:26,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:41:26,151 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:41:26,151 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:41:26,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 01:41:26,152 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:41:26,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:41:26,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1735983877, now seen corresponding path program 1 times [2020-10-16 01:41:26,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:41:26,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400014206] [2020-10-16 01:41:26,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:41:26,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:41:26,224 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 01:41:26,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400014206] [2020-10-16 01:41:26,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:41:26,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:41:26,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120556939] [2020-10-16 01:41:26,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:41:26,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:41:26,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:41:26,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:41:26,229 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 110 [2020-10-16 01:41:26,230 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 46 flow. Second operand 4 states. [2020-10-16 01:41:26,230 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:41:26,230 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 110 [2020-10-16 01:41:26,230 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:41:26,265 INFO L129 PetriNetUnfolder]: 5/36 cut-off events. [2020-10-16 01:41:26,265 INFO L130 PetriNetUnfolder]: For 8/12 co-relation queries the response was YES. [2020-10-16 01:41:26,266 INFO L80 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 36 events. 5/36 cut-off events. For 8/12 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 105 event pairs, 1 based on Foata normal form. 5/40 useless extension candidates. Maximal degree in co-relation 64. Up to 7 conditions per place. [2020-10-16 01:41:26,266 INFO L132 encePairwiseOnDemand]: 106/110 looper letters, 4 selfloop transitions, 3 changer transitions 1/19 dead transitions. [2020-10-16 01:41:26,266 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 19 transitions, 71 flow [2020-10-16 01:41:26,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:41:26,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:41:26,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 362 transitions. [2020-10-16 01:41:26,269 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8227272727272728 [2020-10-16 01:41:26,269 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 362 transitions. [2020-10-16 01:41:26,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 362 transitions. [2020-10-16 01:41:26,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:41:26,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 362 transitions. [2020-10-16 01:41:26,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:41:26,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:41:26,273 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:41:26,273 INFO L185 Difference]: Start difference. First operand has 26 places, 16 transitions, 46 flow. Second operand 4 states and 362 transitions. [2020-10-16 01:41:26,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 19 transitions, 71 flow [2020-10-16 01:41:26,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 19 transitions, 65 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:41:26,274 INFO L241 Difference]: Finished difference. Result has 29 places, 16 transitions, 56 flow [2020-10-16 01:41:26,275 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=56, PETRI_PLACES=29, PETRI_TRANSITIONS=16} [2020-10-16 01:41:26,275 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2020-10-16 01:41:26,276 INFO L481 AbstractCegarLoop]: Abstraction has has 29 places, 16 transitions, 56 flow [2020-10-16 01:41:26,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:41:26,276 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:41:26,276 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:41:26,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 01:41:26,277 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:41:26,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:41:26,277 INFO L82 PathProgramCache]: Analyzing trace with hash 2019773545, now seen corresponding path program 1 times [2020-10-16 01:41:26,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:41:26,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752844258] [2020-10-16 01:41:26,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:41:26,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:41:26,356 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 01:41:26,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752844258] [2020-10-16 01:41:26,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:41:26,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:41:26,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731853461] [2020-10-16 01:41:26,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:41:26,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:41:26,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:41:26,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:41:26,363 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 110 [2020-10-16 01:41:26,364 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 16 transitions, 56 flow. Second operand 3 states. [2020-10-16 01:41:26,364 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:41:26,364 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 110 [2020-10-16 01:41:26,364 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:41:26,374 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2020-10-16 01:41:26,374 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 01:41:26,374 INFO L80 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 16 events. 0/16 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 17 event pairs, 0 based on Foata normal form. 1/17 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2020-10-16 01:41:26,375 INFO L132 encePairwiseOnDemand]: 107/110 looper letters, 1 selfloop transitions, 2 changer transitions 0/16 dead transitions. [2020-10-16 01:41:26,375 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 16 transitions, 62 flow [2020-10-16 01:41:26,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:41:26,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:41:26,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 286 transitions. [2020-10-16 01:41:26,377 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8666666666666667 [2020-10-16 01:41:26,377 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 286 transitions. [2020-10-16 01:41:26,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 286 transitions. [2020-10-16 01:41:26,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:41:26,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 286 transitions. [2020-10-16 01:41:26,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:41:26,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:41:26,379 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:41:26,380 INFO L185 Difference]: Start difference. First operand has 29 places, 16 transitions, 56 flow. Second operand 3 states and 286 transitions. [2020-10-16 01:41:26,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 16 transitions, 62 flow [2020-10-16 01:41:26,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 16 transitions, 50 flow, removed 2 selfloop flow, removed 4 redundant places. [2020-10-16 01:41:26,381 INFO L241 Difference]: Finished difference. Result has 28 places, 16 transitions, 52 flow [2020-10-16 01:41:26,382 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=28, PETRI_TRANSITIONS=16} [2020-10-16 01:41:26,382 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2020-10-16 01:41:26,382 INFO L481 AbstractCegarLoop]: Abstraction has has 28 places, 16 transitions, 52 flow [2020-10-16 01:41:26,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:41:26,382 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:41:26,382 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:41:26,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 01:41:26,383 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:41:26,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:41:26,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1326651635, now seen corresponding path program 1 times [2020-10-16 01:41:26,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:41:26,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495150863] [2020-10-16 01:41:26,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:41:26,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:41:26,433 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 01:41:26,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495150863] [2020-10-16 01:41:26,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:41:26,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:41:26,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112910215] [2020-10-16 01:41:26,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:41:26,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:41:26,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:41:26,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:41:26,437 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 110 [2020-10-16 01:41:26,437 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 16 transitions, 52 flow. Second operand 4 states. [2020-10-16 01:41:26,438 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:41:26,438 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 110 [2020-10-16 01:41:26,438 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:41:26,467 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2020-10-16 01:41:26,468 INFO L130 PetriNetUnfolder]: For 10/11 co-relation queries the response was YES. [2020-10-16 01:41:26,468 INFO L80 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 21 events. 0/21 cut-off events. For 10/11 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 25 event pairs, 0 based on Foata normal form. 2/22 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2020-10-16 01:41:26,469 INFO L132 encePairwiseOnDemand]: 106/110 looper letters, 1 selfloop transitions, 3 changer transitions 1/17 dead transitions. [2020-10-16 01:41:26,469 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 17 transitions, 67 flow [2020-10-16 01:41:26,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:41:26,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:41:26,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 363 transitions. [2020-10-16 01:41:26,471 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.825 [2020-10-16 01:41:26,472 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 363 transitions. [2020-10-16 01:41:26,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 363 transitions. [2020-10-16 01:41:26,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:41:26,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 363 transitions. [2020-10-16 01:41:26,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:41:26,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:41:26,475 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:41:26,475 INFO L185 Difference]: Start difference. First operand has 28 places, 16 transitions, 52 flow. Second operand 4 states and 363 transitions. [2020-10-16 01:41:26,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 17 transitions, 67 flow [2020-10-16 01:41:26,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 17 transitions, 61 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:41:26,477 INFO L241 Difference]: Finished difference. Result has 31 places, 16 transitions, 62 flow [2020-10-16 01:41:26,477 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=62, PETRI_PLACES=31, PETRI_TRANSITIONS=16} [2020-10-16 01:41:26,477 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 5 predicate places. [2020-10-16 01:41:26,477 INFO L481 AbstractCegarLoop]: Abstraction has has 31 places, 16 transitions, 62 flow [2020-10-16 01:41:26,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:41:26,478 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:41:26,478 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:41:26,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 01:41:26,478 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:41:26,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:41:26,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1822825542, now seen corresponding path program 1 times [2020-10-16 01:41:26,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:41:26,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388954895] [2020-10-16 01:41:26,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:41:26,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:41:26,569 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 01:41:26,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388954895] [2020-10-16 01:41:26,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:41:26,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:41:26,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158929150] [2020-10-16 01:41:26,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:41:26,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:41:26,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:41:26,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:41:26,577 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 110 [2020-10-16 01:41:26,578 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 16 transitions, 62 flow. Second operand 4 states. [2020-10-16 01:41:26,578 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:41:26,578 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 110 [2020-10-16 01:41:26,579 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:41:26,646 INFO L129 PetriNetUnfolder]: 28/68 cut-off events. [2020-10-16 01:41:26,646 INFO L130 PetriNetUnfolder]: For 125/132 co-relation queries the response was YES. [2020-10-16 01:41:26,647 INFO L80 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 68 events. 28/68 cut-off events. For 125/132 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 205 event pairs, 12 based on Foata normal form. 9/71 useless extension candidates. Maximal degree in co-relation 162. Up to 45 conditions per place. [2020-10-16 01:41:26,647 INFO L132 encePairwiseOnDemand]: 104/110 looper letters, 5 selfloop transitions, 4 changer transitions 7/26 dead transitions. [2020-10-16 01:41:26,648 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 26 transitions, 114 flow [2020-10-16 01:41:26,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 01:41:26,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 01:41:26,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 423 transitions. [2020-10-16 01:41:26,650 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.769090909090909 [2020-10-16 01:41:26,650 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 423 transitions. [2020-10-16 01:41:26,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 423 transitions. [2020-10-16 01:41:26,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:41:26,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 423 transitions. [2020-10-16 01:41:26,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 01:41:26,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 01:41:26,653 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 01:41:26,653 INFO L185 Difference]: Start difference. First operand has 31 places, 16 transitions, 62 flow. Second operand 5 states and 423 transitions. [2020-10-16 01:41:26,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 26 transitions, 114 flow [2020-10-16 01:41:26,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 26 transitions, 96 flow, removed 3 selfloop flow, removed 6 redundant places. [2020-10-16 01:41:26,655 INFO L241 Difference]: Finished difference. Result has 32 places, 19 transitions, 80 flow [2020-10-16 01:41:26,655 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=80, PETRI_PLACES=32, PETRI_TRANSITIONS=19} [2020-10-16 01:41:26,656 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 6 predicate places. [2020-10-16 01:41:26,656 INFO L481 AbstractCegarLoop]: Abstraction has has 32 places, 19 transitions, 80 flow [2020-10-16 01:41:26,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:41:26,656 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:41:26,656 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:41:26,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 01:41:26,657 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:41:26,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:41:26,657 INFO L82 PathProgramCache]: Analyzing trace with hash 673012169, now seen corresponding path program 1 times [2020-10-16 01:41:26,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:41:26,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799674765] [2020-10-16 01:41:26,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:41:26,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:41:26,719 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 01:41:26,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799674765] [2020-10-16 01:41:26,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:41:26,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:41:26,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907890890] [2020-10-16 01:41:26,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:41:26,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:41:26,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:41:26,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:41:26,723 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 110 [2020-10-16 01:41:26,723 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 19 transitions, 80 flow. Second operand 5 states. [2020-10-16 01:41:26,723 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:41:26,724 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 110 [2020-10-16 01:41:26,724 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:41:26,789 INFO L129 PetriNetUnfolder]: 16/49 cut-off events. [2020-10-16 01:41:26,790 INFO L130 PetriNetUnfolder]: For 72/115 co-relation queries the response was YES. [2020-10-16 01:41:26,790 INFO L80 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 49 events. 16/49 cut-off events. For 72/115 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 124 event pairs, 2 based on Foata normal form. 16/63 useless extension candidates. Maximal degree in co-relation 165. Up to 35 conditions per place. [2020-10-16 01:41:26,791 INFO L132 encePairwiseOnDemand]: 104/110 looper letters, 5 selfloop transitions, 7 changer transitions 7/29 dead transitions. [2020-10-16 01:41:26,791 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 176 flow [2020-10-16 01:41:26,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 01:41:26,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 01:41:26,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 507 transitions. [2020-10-16 01:41:26,794 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7681818181818182 [2020-10-16 01:41:26,794 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 507 transitions. [2020-10-16 01:41:26,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 507 transitions. [2020-10-16 01:41:26,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:41:26,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 507 transitions. [2020-10-16 01:41:26,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 01:41:26,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 01:41:26,797 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 01:41:26,798 INFO L185 Difference]: Start difference. First operand has 32 places, 19 transitions, 80 flow. Second operand 6 states and 507 transitions. [2020-10-16 01:41:26,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 176 flow [2020-10-16 01:41:26,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 29 transitions, 170 flow, removed 1 selfloop flow, removed 2 redundant places. [2020-10-16 01:41:26,800 INFO L241 Difference]: Finished difference. Result has 36 places, 22 transitions, 130 flow [2020-10-16 01:41:26,801 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=130, PETRI_PLACES=36, PETRI_TRANSITIONS=22} [2020-10-16 01:41:26,801 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2020-10-16 01:41:26,801 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 22 transitions, 130 flow [2020-10-16 01:41:26,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:41:26,801 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:41:26,802 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:41:26,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 01:41:26,802 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:41:26,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:41:26,802 INFO L82 PathProgramCache]: Analyzing trace with hash -625288368, now seen corresponding path program 1 times [2020-10-16 01:41:26,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:41:26,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612140495] [2020-10-16 01:41:26,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:41:26,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:41:26,869 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 01:41:26,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612140495] [2020-10-16 01:41:26,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:41:26,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 01:41:26,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78596100] [2020-10-16 01:41:26,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 01:41:26,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:41:26,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 01:41:26,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 01:41:26,872 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 110 [2020-10-16 01:41:26,873 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 22 transitions, 130 flow. Second operand 6 states. [2020-10-16 01:41:26,873 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:41:26,873 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 110 [2020-10-16 01:41:26,873 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:41:26,934 INFO L129 PetriNetUnfolder]: 7/31 cut-off events. [2020-10-16 01:41:26,934 INFO L130 PetriNetUnfolder]: For 89/121 co-relation queries the response was YES. [2020-10-16 01:41:26,935 INFO L80 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 31 events. 7/31 cut-off events. For 89/121 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 43 event pairs, 0 based on Foata normal form. 14/44 useless extension candidates. Maximal degree in co-relation 122. Up to 20 conditions per place. [2020-10-16 01:41:26,935 INFO L132 encePairwiseOnDemand]: 104/110 looper letters, 2 selfloop transitions, 10 changer transitions 4/26 dead transitions. [2020-10-16 01:41:26,935 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 26 transitions, 198 flow [2020-10-16 01:41:26,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 01:41:26,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 01:41:26,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 585 transitions. [2020-10-16 01:41:26,938 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7597402597402597 [2020-10-16 01:41:26,938 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 585 transitions. [2020-10-16 01:41:26,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 585 transitions. [2020-10-16 01:41:26,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:41:26,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 585 transitions. [2020-10-16 01:41:26,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 01:41:26,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 01:41:26,942 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 01:41:26,942 INFO L185 Difference]: Start difference. First operand has 36 places, 22 transitions, 130 flow. Second operand 7 states and 585 transitions. [2020-10-16 01:41:26,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 26 transitions, 198 flow [2020-10-16 01:41:26,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 26 transitions, 162 flow, removed 14 selfloop flow, removed 4 redundant places. [2020-10-16 01:41:26,945 INFO L241 Difference]: Finished difference. Result has 39 places, 22 transitions, 132 flow [2020-10-16 01:41:26,945 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=132, PETRI_PLACES=39, PETRI_TRANSITIONS=22} [2020-10-16 01:41:26,946 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 13 predicate places. [2020-10-16 01:41:26,946 INFO L481 AbstractCegarLoop]: Abstraction has has 39 places, 22 transitions, 132 flow [2020-10-16 01:41:26,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 01:41:26,946 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:41:26,946 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:41:26,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 01:41:26,947 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:41:26,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:41:26,947 INFO L82 PathProgramCache]: Analyzing trace with hash -971568297, now seen corresponding path program 1 times [2020-10-16 01:41:26,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:41:26,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725183451] [2020-10-16 01:41:26,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:41:26,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:41:27,002 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 01:41:27,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725183451] [2020-10-16 01:41:27,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:41:27,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:41:27,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373421894] [2020-10-16 01:41:27,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:41:27,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:41:27,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:41:27,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:41:27,005 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 110 [2020-10-16 01:41:27,005 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 22 transitions, 132 flow. Second operand 4 states. [2020-10-16 01:41:27,006 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:41:27,006 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 110 [2020-10-16 01:41:27,006 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:41:27,033 INFO L129 PetriNetUnfolder]: 5/24 cut-off events. [2020-10-16 01:41:27,033 INFO L130 PetriNetUnfolder]: For 46/52 co-relation queries the response was YES. [2020-10-16 01:41:27,033 INFO L80 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 24 events. 5/24 cut-off events. For 46/52 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 22 event pairs, 0 based on Foata normal form. 2/25 useless extension candidates. Maximal degree in co-relation 77. Up to 11 conditions per place. [2020-10-16 01:41:27,033 INFO L132 encePairwiseOnDemand]: 107/110 looper letters, 0 selfloop transitions, 0 changer transitions 21/21 dead transitions. [2020-10-16 01:41:27,034 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 21 transitions, 130 flow [2020-10-16 01:41:27,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:41:27,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:41:27,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 357 transitions. [2020-10-16 01:41:27,037 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8113636363636364 [2020-10-16 01:41:27,037 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 357 transitions. [2020-10-16 01:41:27,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 357 transitions. [2020-10-16 01:41:27,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:41:27,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 357 transitions. [2020-10-16 01:41:27,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:41:27,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:41:27,039 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:41:27,039 INFO L185 Difference]: Start difference. First operand has 39 places, 22 transitions, 132 flow. Second operand 4 states and 357 transitions. [2020-10-16 01:41:27,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 21 transitions, 130 flow [2020-10-16 01:41:27,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 21 transitions, 96 flow, removed 9 selfloop flow, removed 5 redundant places. [2020-10-16 01:41:27,042 INFO L241 Difference]: Finished difference. Result has 34 places, 0 transitions, 0 flow [2020-10-16 01:41:27,042 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=34, PETRI_TRANSITIONS=0} [2020-10-16 01:41:27,042 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 8 predicate places. [2020-10-16 01:41:27,043 INFO L481 AbstractCegarLoop]: Abstraction has has 34 places, 0 transitions, 0 flow [2020-10-16 01:41:27,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:41:27,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 01:41:27,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:41:27 BasicIcfg [2020-10-16 01:41:27,048 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 01:41:27,052 INFO L168 Benchmark]: Toolchain (without parser) took 4069.91 ms. Allocated memory was 252.7 MB in the beginning and 372.2 MB in the end (delta: 119.5 MB). Free memory was 207.8 MB in the beginning and 275.5 MB in the end (delta: -67.6 MB). Peak memory consumption was 51.9 MB. Max. memory is 14.2 GB. [2020-10-16 01:41:27,059 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 252.7 MB. Free memory was 230.8 MB in the beginning and 229.9 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. [2020-10-16 01:41:27,060 INFO L168 Benchmark]: CACSL2BoogieTranslator took 694.87 ms. Allocated memory was 252.7 MB in the beginning and 318.8 MB in the end (delta: 66.1 MB). Free memory was 207.8 MB in the beginning and 272.9 MB in the end (delta: -65.0 MB). Peak memory consumption was 30.7 MB. Max. memory is 14.2 GB. [2020-10-16 01:41:27,061 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.91 ms. Allocated memory is still 318.8 MB. Free memory was 272.9 MB in the beginning and 270.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:41:27,062 INFO L168 Benchmark]: Boogie Preprocessor took 28.32 ms. Allocated memory is still 318.8 MB. Free memory was 270.4 MB in the beginning and 268.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-16 01:41:27,063 INFO L168 Benchmark]: RCFGBuilder took 514.06 ms. Allocated memory is still 318.8 MB. Free memory was 268.7 MB in the beginning and 246.6 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 14.2 GB. [2020-10-16 01:41:27,066 INFO L168 Benchmark]: TraceAbstraction took 2776.74 ms. Allocated memory was 318.8 MB in the beginning and 372.2 MB in the end (delta: 53.5 MB). Free memory was 245.7 MB in the beginning and 275.5 MB in the end (delta: -29.8 MB). Peak memory consumption was 23.7 MB. Max. memory is 14.2 GB. [2020-10-16 01:41:27,077 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 252.7 MB. Free memory was 230.8 MB in the beginning and 229.9 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 694.87 ms. Allocated memory was 252.7 MB in the beginning and 318.8 MB in the end (delta: 66.1 MB). Free memory was 207.8 MB in the beginning and 272.9 MB in the end (delta: -65.0 MB). Peak memory consumption was 30.7 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 50.91 ms. Allocated memory is still 318.8 MB. Free memory was 272.9 MB in the beginning and 270.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 28.32 ms. Allocated memory is still 318.8 MB. Free memory was 270.4 MB in the beginning and 268.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * RCFGBuilder took 514.06 ms. Allocated memory is still 318.8 MB. Free memory was 268.7 MB in the beginning and 246.6 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2776.74 ms. Allocated memory was 318.8 MB in the beginning and 372.2 MB in the end (delta: 53.5 MB). Free memory was 245.7 MB in the beginning and 275.5 MB in the end (delta: -29.8 MB). Peak memory consumption was 23.7 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 492 VarBasedMoverChecksPositive, 38 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 30 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 56 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.2s, 64 PlacesBefore, 26 PlacesAfterwards, 55 TransitionsBefore, 16 TransitionsAfterwards, 804 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 1 ChoiceCompositions, 41 TotalNumberOfCompositions, 1380 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, 68 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: 2.6s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 21 SDtfs, 15 SDslu, 15 SDs, 0 SdLazy, 105 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=132occurred in iteration=7, 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, 0.4s InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 85 ConstructedInterpolants, 0 QuantifiedInterpolants, 2831 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...