/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-SemanticLooper.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 05:08:20,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 05:08:20,550 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 05:08:20,590 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 05:08:20,590 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 05:08:20,598 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 05:08:20,599 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 05:08:20,603 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 05:08:20,605 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 05:08:20,606 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 05:08:20,607 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 05:08:20,608 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 05:08:20,608 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 05:08:20,609 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 05:08:20,610 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 05:08:20,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 05:08:20,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 05:08:20,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 05:08:20,614 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 05:08:20,616 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 05:08:20,617 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 05:08:20,618 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 05:08:20,619 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 05:08:20,620 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 05:08:20,622 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 05:08:20,625 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 05:08:20,626 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 05:08:20,626 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 05:08:20,627 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 05:08:20,628 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 05:08:20,628 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 05:08:20,629 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 05:08:20,629 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 05:08:20,629 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 05:08:20,630 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 05:08:20,631 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 05:08:20,632 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-SemanticLooper.epf [2020-10-16 05:08:20,653 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 05:08:20,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 05:08:20,655 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 05:08:20,655 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 05:08:20,655 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 05:08:20,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 05:08:20,656 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 05:08:20,656 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 05:08:20,656 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 05:08:20,656 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 05:08:20,657 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 05:08:20,657 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 05:08:20,657 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 05:08:20,657 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 05:08:20,657 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 05:08:20,658 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 05:08:20,658 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 05:08:20,658 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 05:08:20,658 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 05:08:20,658 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 05:08:20,658 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 05:08:20,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 05:08:20,659 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 05:08:20,659 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 05:08:20,659 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 05:08:20,660 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 05:08:20,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 05:08:20,660 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 05:08:20,660 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 05:08:20,957 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 05:08:20,968 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 05:08:20,971 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 05:08:20,972 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 05:08:20,973 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 05:08:20,974 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc.i [2020-10-16 05:08:21,029 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2a64bb98/96fffc9967a9466fb417145c65259b8a/FLAG32093f5dc [2020-10-16 05:08:21,578 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 05:08:21,579 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc.i [2020-10-16 05:08:21,592 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2a64bb98/96fffc9967a9466fb417145c65259b8a/FLAG32093f5dc [2020-10-16 05:08:21,862 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2a64bb98/96fffc9967a9466fb417145c65259b8a [2020-10-16 05:08:21,871 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 05:08:21,873 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 05:08:21,874 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 05:08:21,874 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 05:08:21,878 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 05:08:21,879 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:08:21" (1/1) ... [2020-10-16 05:08:21,881 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@93fe9d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:08:21, skipping insertion in model container [2020-10-16 05:08:21,882 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:08:21" (1/1) ... [2020-10-16 05:08:21,889 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 05:08:21,949 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 05:08:22,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:08:22,410 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 05:08:22,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:08:22,567 INFO L208 MainTranslator]: Completed translation [2020-10-16 05:08:22,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:08:22 WrapperNode [2020-10-16 05:08:22,568 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 05:08:22,569 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 05:08:22,569 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 05:08:22,569 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 05:08:22,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:08:22" (1/1) ... [2020-10-16 05:08:22,597 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:08:22" (1/1) ... [2020-10-16 05:08:22,617 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 05:08:22,618 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 05:08:22,618 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 05:08:22,618 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 05:08:22,626 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:08:22" (1/1) ... [2020-10-16 05:08:22,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:08:22" (1/1) ... [2020-10-16 05:08:22,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:08:22" (1/1) ... [2020-10-16 05:08:22,629 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:08:22" (1/1) ... [2020-10-16 05:08:22,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:08:22" (1/1) ... [2020-10-16 05:08:22,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:08:22" (1/1) ... [2020-10-16 05:08:22,641 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:08:22" (1/1) ... [2020-10-16 05:08:22,644 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 05:08:22,645 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 05:08:22,645 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 05:08:22,645 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 05:08:22,646 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:08:22" (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 05:08:22,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 05:08:22,714 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 05:08:22,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 05:08:22,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 05:08:22,715 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 05:08:22,715 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 05:08:22,715 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 05:08:22,715 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 05:08:22,716 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 05:08:22,717 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 05:08:22,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 05:08:22,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 05:08:22,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 05:08:22,720 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 05:08:23,105 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 05:08:23,106 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 05:08:23,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:08:23 BoogieIcfgContainer [2020-10-16 05:08:23,108 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 05:08:23,109 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 05:08:23,110 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 05:08:23,112 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 05:08:23,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:08:21" (1/3) ... [2020-10-16 05:08:23,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c2dbf11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:08:23, skipping insertion in model container [2020-10-16 05:08:23,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:08:22" (2/3) ... [2020-10-16 05:08:23,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c2dbf11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:08:23, skipping insertion in model container [2020-10-16 05:08:23,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:08:23" (3/3) ... [2020-10-16 05:08:23,116 INFO L111 eAbstractionObserver]: Analyzing ICFG safe025_pso.oepc.i [2020-10-16 05:08:23,128 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 05:08:23,136 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 05:08:23,137 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 05:08:23,167 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:23,167 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:23,167 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:23,168 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:23,168 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:23,169 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:23,169 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:23,169 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:23,169 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:23,170 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:23,170 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:23,170 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:23,171 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:23,171 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:23,172 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:23,173 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:23,173 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:23,173 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:23,179 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:23,179 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:23,179 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:23,180 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:23,190 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:23,190 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:23,191 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:23,191 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:23,204 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:23,204 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:23,205 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:23,205 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:23,221 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 05:08:23,242 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 05:08:23,242 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 05:08:23,242 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 05:08:23,242 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 05:08:23,242 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 05:08:23,242 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 05:08:23,242 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 05:08:23,243 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 05:08:23,256 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 05:08:23,298 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-16 05:08:23,298 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:08:23,303 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 51 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 05:08:23,304 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 05:08:23,310 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 121 flow [2020-10-16 05:08:23,315 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 05:08:23,318 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 56 transitions, 121 flow [2020-10-16 05:08:23,320 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 56 transitions, 121 flow [2020-10-16 05:08:23,321 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 65 places, 56 transitions, 121 flow [2020-10-16 05:08:23,339 INFO L129 PetriNetUnfolder]: 1/56 cut-off events. [2020-10-16 05:08:23,340 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:08:23,340 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 48 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 05:08:23,342 INFO L117 LiptonReduction]: Number of co-enabled transitions 864 [2020-10-16 05:08:24,819 INFO L132 LiptonReduction]: Checked pairs total: 1636 [2020-10-16 05:08:24,819 INFO L134 LiptonReduction]: Total number of compositions: 42 [2020-10-16 05:08:24,822 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1512 [2020-10-16 05:08:24,830 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2020-10-16 05:08:24,831 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:08:24,831 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:08:24,832 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:08:24,832 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:08:24,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:08:24,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1555680932, now seen corresponding path program 1 times [2020-10-16 05:08:24,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:08:24,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058298583] [2020-10-16 05:08:24,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:08:24,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:08:25,085 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 05:08:25,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058298583] [2020-10-16 05:08:25,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:08:25,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:08:25,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737587577] [2020-10-16 05:08:25,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:08:25,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:08:25,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:08:25,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:08:25,117 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 112 [2020-10-16 05:08:25,119 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states. [2020-10-16 05:08:25,119 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:08:25,119 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 112 [2020-10-16 05:08:25,121 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:08:25,139 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2020-10-16 05:08:25,139 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:08:25,139 INFO L80 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 17 events. 0/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 15 event pairs, 0 based on Foata normal form. 1/18 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2020-10-16 05:08:25,141 INFO L132 encePairwiseOnDemand]: 109/112 looper letters, 1 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2020-10-16 05:08:25,141 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 17 transitions, 49 flow [2020-10-16 05:08:25,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:08:25,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:08:25,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2020-10-16 05:08:25,158 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8422619047619048 [2020-10-16 05:08:25,159 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2020-10-16 05:08:25,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2020-10-16 05:08:25,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:08:25,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2020-10-16 05:08:25,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:08:25,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:08:25,175 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:08:25,178 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 283 transitions. [2020-10-16 05:08:25,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 17 transitions, 49 flow [2020-10-16 05:08:25,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 17 transitions, 46 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 05:08:25,184 INFO L241 Difference]: Finished difference. Result has 27 places, 17 transitions, 48 flow [2020-10-16 05:08:25,187 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=27, PETRI_TRANSITIONS=17} [2020-10-16 05:08:25,188 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2020-10-16 05:08:25,189 INFO L481 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 48 flow [2020-10-16 05:08:25,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:08:25,189 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:08:25,189 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:08:25,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 05:08:25,190 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:08:25,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:08:25,191 INFO L82 PathProgramCache]: Analyzing trace with hash -981469511, now seen corresponding path program 1 times [2020-10-16 05:08:25,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:08:25,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219975943] [2020-10-16 05:08:25,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:08:25,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:08:25,275 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 05:08:25,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219975943] [2020-10-16 05:08:25,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:08:25,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:08:25,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150443433] [2020-10-16 05:08:25,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:08:25,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:08:25,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:08:25,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:08:25,281 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 112 [2020-10-16 05:08:25,282 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 48 flow. Second operand 4 states. [2020-10-16 05:08:25,282 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:08:25,282 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 112 [2020-10-16 05:08:25,282 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:08:25,333 INFO L129 PetriNetUnfolder]: 13/56 cut-off events. [2020-10-16 05:08:25,333 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2020-10-16 05:08:25,334 INFO L80 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 56 events. 13/56 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 184 event pairs, 1 based on Foata normal form. 6/59 useless extension candidates. Maximal degree in co-relation 106. Up to 17 conditions per place. [2020-10-16 05:08:25,335 INFO L132 encePairwiseOnDemand]: 108/112 looper letters, 6 selfloop transitions, 3 changer transitions 1/21 dead transitions. [2020-10-16 05:08:25,335 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 21 transitions, 79 flow [2020-10-16 05:08:25,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:08:25,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:08:25,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 352 transitions. [2020-10-16 05:08:25,339 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7857142857142857 [2020-10-16 05:08:25,340 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 352 transitions. [2020-10-16 05:08:25,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 352 transitions. [2020-10-16 05:08:25,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:08:25,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 352 transitions. [2020-10-16 05:08:25,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:08:25,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:08:25,345 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:08:25,345 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 48 flow. Second operand 4 states and 352 transitions. [2020-10-16 05:08:25,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 21 transitions, 79 flow [2020-10-16 05:08:25,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 21 transitions, 73 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 05:08:25,347 INFO L241 Difference]: Finished difference. Result has 30 places, 17 transitions, 58 flow [2020-10-16 05:08:25,347 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=58, PETRI_PLACES=30, PETRI_TRANSITIONS=17} [2020-10-16 05:08:25,348 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2020-10-16 05:08:25,348 INFO L481 AbstractCegarLoop]: Abstraction has has 30 places, 17 transitions, 58 flow [2020-10-16 05:08:25,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:08:25,348 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:08:25,349 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:08:25,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 05:08:25,349 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:08:25,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:08:25,350 INFO L82 PathProgramCache]: Analyzing trace with hash -360778878, now seen corresponding path program 1 times [2020-10-16 05:08:25,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:08:25,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609715393] [2020-10-16 05:08:25,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:08:25,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:08:25,414 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 05:08:25,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609715393] [2020-10-16 05:08:25,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:08:25,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:08:25,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349430195] [2020-10-16 05:08:25,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:08:25,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:08:25,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:08:25,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:08:25,418 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 112 [2020-10-16 05:08:25,419 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 17 transitions, 58 flow. Second operand 4 states. [2020-10-16 05:08:25,419 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:08:25,419 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 112 [2020-10-16 05:08:25,420 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:08:25,478 INFO L129 PetriNetUnfolder]: 6/40 cut-off events. [2020-10-16 05:08:25,478 INFO L130 PetriNetUnfolder]: For 25/27 co-relation queries the response was YES. [2020-10-16 05:08:25,478 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 40 events. 6/40 cut-off events. For 25/27 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 111 event pairs, 3 based on Foata normal form. 4/43 useless extension candidates. Maximal degree in co-relation 83. Up to 12 conditions per place. [2020-10-16 05:08:25,479 INFO L132 encePairwiseOnDemand]: 108/112 looper letters, 5 selfloop transitions, 2 changer transitions 4/22 dead transitions. [2020-10-16 05:08:25,479 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 22 transitions, 94 flow [2020-10-16 05:08:25,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 05:08:25,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 05:08:25,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 438 transitions. [2020-10-16 05:08:25,482 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7821428571428571 [2020-10-16 05:08:25,483 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 438 transitions. [2020-10-16 05:08:25,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 438 transitions. [2020-10-16 05:08:25,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:08:25,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 438 transitions. [2020-10-16 05:08:25,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 05:08:25,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 05:08:25,487 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 05:08:25,487 INFO L185 Difference]: Start difference. First operand has 30 places, 17 transitions, 58 flow. Second operand 5 states and 438 transitions. [2020-10-16 05:08:25,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 22 transitions, 94 flow [2020-10-16 05:08:25,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 22 transitions, 80 flow, removed 2 selfloop flow, removed 4 redundant places. [2020-10-16 05:08:25,489 INFO L241 Difference]: Finished difference. Result has 33 places, 17 transitions, 58 flow [2020-10-16 05:08:25,490 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=58, PETRI_PLACES=33, PETRI_TRANSITIONS=17} [2020-10-16 05:08:25,490 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2020-10-16 05:08:25,490 INFO L481 AbstractCegarLoop]: Abstraction has has 33 places, 17 transitions, 58 flow [2020-10-16 05:08:25,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:08:25,490 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:08:25,491 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:08:25,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 05:08:25,491 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:08:25,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:08:25,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1700735614, now seen corresponding path program 1 times [2020-10-16 05:08:25,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:08:25,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839927004] [2020-10-16 05:08:25,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:08:25,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:08:25,552 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 05:08:25,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839927004] [2020-10-16 05:08:25,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:08:25,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:08:25,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420406493] [2020-10-16 05:08:25,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:08:25,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:08:25,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:08:25,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:08:25,556 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 112 [2020-10-16 05:08:25,556 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 17 transitions, 58 flow. Second operand 4 states. [2020-10-16 05:08:25,556 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:08:25,556 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 112 [2020-10-16 05:08:25,557 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:08:25,606 INFO L129 PetriNetUnfolder]: 28/69 cut-off events. [2020-10-16 05:08:25,607 INFO L130 PetriNetUnfolder]: For 80/84 co-relation queries the response was YES. [2020-10-16 05:08:25,608 INFO L80 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 69 events. 28/69 cut-off events. For 80/84 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 221 event pairs, 12 based on Foata normal form. 10/74 useless extension candidates. Maximal degree in co-relation 155. Up to 45 conditions per place. [2020-10-16 05:08:25,608 INFO L132 encePairwiseOnDemand]: 106/112 looper letters, 5 selfloop transitions, 4 changer transitions 7/27 dead transitions. [2020-10-16 05:08:25,609 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 27 transitions, 110 flow [2020-10-16 05:08:25,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 05:08:25,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 05:08:25,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 423 transitions. [2020-10-16 05:08:25,611 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7553571428571428 [2020-10-16 05:08:25,612 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 423 transitions. [2020-10-16 05:08:25,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 423 transitions. [2020-10-16 05:08:25,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:08:25,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 423 transitions. [2020-10-16 05:08:25,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 05:08:25,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 05:08:25,615 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 05:08:25,615 INFO L185 Difference]: Start difference. First operand has 33 places, 17 transitions, 58 flow. Second operand 5 states and 423 transitions. [2020-10-16 05:08:25,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 27 transitions, 110 flow [2020-10-16 05:08:25,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 27 transitions, 102 flow, removed 2 selfloop flow, removed 4 redundant places. [2020-10-16 05:08:25,618 INFO L241 Difference]: Finished difference. Result has 34 places, 20 transitions, 86 flow [2020-10-16 05:08:25,618 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=86, PETRI_PLACES=34, PETRI_TRANSITIONS=20} [2020-10-16 05:08:25,619 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2020-10-16 05:08:25,619 INFO L481 AbstractCegarLoop]: Abstraction has has 34 places, 20 transitions, 86 flow [2020-10-16 05:08:25,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:08:25,619 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:08:25,619 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:08:25,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 05:08:25,620 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:08:25,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:08:25,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1522800169, now seen corresponding path program 1 times [2020-10-16 05:08:25,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:08:25,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482564762] [2020-10-16 05:08:25,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:08:25,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:08:25,708 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 05:08:25,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482564762] [2020-10-16 05:08:25,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:08:25,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:08:25,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697158456] [2020-10-16 05:08:25,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:08:25,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:08:25,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:08:25,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:08:25,716 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 112 [2020-10-16 05:08:25,717 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 20 transitions, 86 flow. Second operand 5 states. [2020-10-16 05:08:25,718 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:08:25,718 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 112 [2020-10-16 05:08:25,718 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:08:25,792 INFO L129 PetriNetUnfolder]: 16/50 cut-off events. [2020-10-16 05:08:25,793 INFO L130 PetriNetUnfolder]: For 71/111 co-relation queries the response was YES. [2020-10-16 05:08:25,793 INFO L80 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 50 events. 16/50 cut-off events. For 71/111 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 121 event pairs, 2 based on Foata normal form. 14/62 useless extension candidates. Maximal degree in co-relation 167. Up to 35 conditions per place. [2020-10-16 05:08:25,794 INFO L132 encePairwiseOnDemand]: 106/112 looper letters, 5 selfloop transitions, 7 changer transitions 7/30 dead transitions. [2020-10-16 05:08:25,794 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 30 transitions, 182 flow [2020-10-16 05:08:25,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:08:25,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:08:25,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 507 transitions. [2020-10-16 05:08:25,797 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7544642857142857 [2020-10-16 05:08:25,797 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 507 transitions. [2020-10-16 05:08:25,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 507 transitions. [2020-10-16 05:08:25,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:08:25,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 507 transitions. [2020-10-16 05:08:25,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:08:25,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:08:25,801 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:08:25,801 INFO L185 Difference]: Start difference. First operand has 34 places, 20 transitions, 86 flow. Second operand 6 states and 507 transitions. [2020-10-16 05:08:25,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 30 transitions, 182 flow [2020-10-16 05:08:25,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 30 transitions, 176 flow, removed 1 selfloop flow, removed 2 redundant places. [2020-10-16 05:08:25,804 INFO L241 Difference]: Finished difference. Result has 38 places, 23 transitions, 136 flow [2020-10-16 05:08:25,805 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=136, PETRI_PLACES=38, PETRI_TRANSITIONS=23} [2020-10-16 05:08:25,805 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2020-10-16 05:08:25,805 INFO L481 AbstractCegarLoop]: Abstraction has has 38 places, 23 transitions, 136 flow [2020-10-16 05:08:25,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:08:25,806 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:08:25,806 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:08:25,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 05:08:25,807 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:08:25,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:08:25,807 INFO L82 PathProgramCache]: Analyzing trace with hash 78240435, now seen corresponding path program 1 times [2020-10-16 05:08:25,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:08:25,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132342468] [2020-10-16 05:08:25,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:08:25,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:08:25,917 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 05:08:25,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132342468] [2020-10-16 05:08:25,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:08:25,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 05:08:25,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715800162] [2020-10-16 05:08:25,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 05:08:25,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:08:25,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 05:08:25,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 05:08:25,921 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 112 [2020-10-16 05:08:25,922 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 23 transitions, 136 flow. Second operand 6 states. [2020-10-16 05:08:25,922 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:08:25,922 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 112 [2020-10-16 05:08:25,922 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:08:25,979 INFO L129 PetriNetUnfolder]: 7/32 cut-off events. [2020-10-16 05:08:25,980 INFO L130 PetriNetUnfolder]: For 104/140 co-relation queries the response was YES. [2020-10-16 05:08:25,980 INFO L80 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 32 events. 7/32 cut-off events. For 104/140 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 49 event pairs, 0 based on Foata normal form. 16/47 useless extension candidates. Maximal degree in co-relation 125. Up to 20 conditions per place. [2020-10-16 05:08:25,981 INFO L132 encePairwiseOnDemand]: 106/112 looper letters, 2 selfloop transitions, 10 changer transitions 4/27 dead transitions. [2020-10-16 05:08:25,981 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 27 transitions, 204 flow [2020-10-16 05:08:25,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 05:08:25,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 05:08:25,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 585 transitions. [2020-10-16 05:08:25,984 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7461734693877551 [2020-10-16 05:08:25,984 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 585 transitions. [2020-10-16 05:08:25,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 585 transitions. [2020-10-16 05:08:25,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:08:25,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 585 transitions. [2020-10-16 05:08:25,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 05:08:25,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 05:08:25,988 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 05:08:25,989 INFO L185 Difference]: Start difference. First operand has 38 places, 23 transitions, 136 flow. Second operand 7 states and 585 transitions. [2020-10-16 05:08:25,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 27 transitions, 204 flow [2020-10-16 05:08:25,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 27 transitions, 168 flow, removed 14 selfloop flow, removed 4 redundant places. [2020-10-16 05:08:25,992 INFO L241 Difference]: Finished difference. Result has 41 places, 23 transitions, 138 flow [2020-10-16 05:08:25,992 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=138, PETRI_PLACES=41, PETRI_TRANSITIONS=23} [2020-10-16 05:08:25,993 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 14 predicate places. [2020-10-16 05:08:25,993 INFO L481 AbstractCegarLoop]: Abstraction has has 41 places, 23 transitions, 138 flow [2020-10-16 05:08:25,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 05:08:25,993 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:08:25,993 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 05:08:25,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 05:08:25,994 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:08:25,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:08:25,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1449185872, now seen corresponding path program 1 times [2020-10-16 05:08:25,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:08:25,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58866260] [2020-10-16 05:08:25,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:08:26,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:08:26,033 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 05:08:26,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58866260] [2020-10-16 05:08:26,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:08:26,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:08:26,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602337197] [2020-10-16 05:08:26,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:08:26,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:08:26,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:08:26,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:08:26,037 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 112 [2020-10-16 05:08:26,038 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 23 transitions, 138 flow. Second operand 4 states. [2020-10-16 05:08:26,038 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:08:26,038 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 112 [2020-10-16 05:08:26,038 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:08:26,058 INFO L129 PetriNetUnfolder]: 10/41 cut-off events. [2020-10-16 05:08:26,059 INFO L130 PetriNetUnfolder]: For 87/96 co-relation queries the response was YES. [2020-10-16 05:08:26,059 INFO L80 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 41 events. 10/41 cut-off events. For 87/96 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 80 event pairs, 0 based on Foata normal form. 2/41 useless extension candidates. Maximal degree in co-relation 132. Up to 21 conditions per place. [2020-10-16 05:08:26,060 INFO L132 encePairwiseOnDemand]: 109/112 looper letters, 3 selfloop transitions, 1 changer transitions 1/24 dead transitions. [2020-10-16 05:08:26,060 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 24 transitions, 150 flow [2020-10-16 05:08:26,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:08:26,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:08:26,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 358 transitions. [2020-10-16 05:08:26,062 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7991071428571429 [2020-10-16 05:08:26,062 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 358 transitions. [2020-10-16 05:08:26,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 358 transitions. [2020-10-16 05:08:26,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:08:26,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 358 transitions. [2020-10-16 05:08:26,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:08:26,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:08:26,065 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:08:26,065 INFO L185 Difference]: Start difference. First operand has 41 places, 23 transitions, 138 flow. Second operand 4 states and 358 transitions. [2020-10-16 05:08:26,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 24 transitions, 150 flow [2020-10-16 05:08:26,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 24 transitions, 108 flow, removed 13 selfloop flow, removed 7 redundant places. [2020-10-16 05:08:26,067 INFO L241 Difference]: Finished difference. Result has 37 places, 23 transitions, 103 flow [2020-10-16 05:08:26,068 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=32, 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=103, PETRI_PLACES=37, PETRI_TRANSITIONS=23} [2020-10-16 05:08:26,068 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2020-10-16 05:08:26,068 INFO L481 AbstractCegarLoop]: Abstraction has has 37 places, 23 transitions, 103 flow [2020-10-16 05:08:26,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:08:26,068 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:08:26,068 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 05:08:26,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 05:08:26,069 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:08:26,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:08:26,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1933054976, now seen corresponding path program 2 times [2020-10-16 05:08:26,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:08:26,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398487255] [2020-10-16 05:08:26,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:08:26,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:08:26,107 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 05:08:26,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398487255] [2020-10-16 05:08:26,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:08:26,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:08:26,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198417737] [2020-10-16 05:08:26,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:08:26,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:08:26,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:08:26,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:08:26,111 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 112 [2020-10-16 05:08:26,111 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 23 transitions, 103 flow. Second operand 4 states. [2020-10-16 05:08:26,111 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:08:26,112 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 112 [2020-10-16 05:08:26,112 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:08:26,134 INFO L129 PetriNetUnfolder]: 10/45 cut-off events. [2020-10-16 05:08:26,134 INFO L130 PetriNetUnfolder]: For 37/43 co-relation queries the response was YES. [2020-10-16 05:08:26,134 INFO L80 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 45 events. 10/45 cut-off events. For 37/43 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 111 event pairs, 1 based on Foata normal form. 3/46 useless extension candidates. Maximal degree in co-relation 121. Up to 14 conditions per place. [2020-10-16 05:08:26,135 INFO L132 encePairwiseOnDemand]: 109/112 looper letters, 0 selfloop transitions, 0 changer transitions 24/24 dead transitions. [2020-10-16 05:08:26,135 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 24 transitions, 120 flow [2020-10-16 05:08:26,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:08:26,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:08:26,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 352 transitions. [2020-10-16 05:08:26,137 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7857142857142857 [2020-10-16 05:08:26,137 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 352 transitions. [2020-10-16 05:08:26,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 352 transitions. [2020-10-16 05:08:26,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:08:26,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 352 transitions. [2020-10-16 05:08:26,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:08:26,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:08:26,140 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:08:26,140 INFO L185 Difference]: Start difference. First operand has 37 places, 23 transitions, 103 flow. Second operand 4 states and 352 transitions. [2020-10-16 05:08:26,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 24 transitions, 120 flow [2020-10-16 05:08:26,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 24 transitions, 119 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 05:08:26,142 INFO L241 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2020-10-16 05:08:26,142 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=34, 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=37, PETRI_TRANSITIONS=0} [2020-10-16 05:08:26,142 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2020-10-16 05:08:26,143 INFO L481 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2020-10-16 05:08:26,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:08:26,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 05:08:26,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 05:08:26 BasicIcfg [2020-10-16 05:08:26,147 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 05:08:26,150 INFO L168 Benchmark]: Toolchain (without parser) took 4275.92 ms. Allocated memory was 250.6 MB in the beginning and 370.1 MB in the end (delta: 119.5 MB). Free memory was 205.7 MB in the beginning and 243.9 MB in the end (delta: -38.2 MB). Peak memory consumption was 81.3 MB. Max. memory is 14.2 GB. [2020-10-16 05:08:26,150 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 250.6 MB. Free memory is still 227.0 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 05:08:26,151 INFO L168 Benchmark]: CACSL2BoogieTranslator took 694.41 ms. Allocated memory was 250.6 MB in the beginning and 312.0 MB in the end (delta: 61.3 MB). Free memory was 205.7 MB in the beginning and 265.1 MB in the end (delta: -59.5 MB). Peak memory consumption was 29.4 MB. Max. memory is 14.2 GB. [2020-10-16 05:08:26,152 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.81 ms. Allocated memory is still 312.0 MB. Free memory was 265.1 MB in the beginning and 262.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:08:26,153 INFO L168 Benchmark]: Boogie Preprocessor took 26.49 ms. Allocated memory is still 312.0 MB. Free memory was 262.6 MB in the beginning and 260.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:08:26,154 INFO L168 Benchmark]: RCFGBuilder took 463.54 ms. Allocated memory is still 312.0 MB. Free memory was 260.1 MB in the beginning and 238.2 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 14.2 GB. [2020-10-16 05:08:26,155 INFO L168 Benchmark]: TraceAbstraction took 3037.82 ms. Allocated memory was 312.0 MB in the beginning and 370.1 MB in the end (delta: 58.2 MB). Free memory was 238.2 MB in the beginning and 243.9 MB in the end (delta: -5.6 MB). Peak memory consumption was 52.6 MB. Max. memory is 14.2 GB. [2020-10-16 05:08:26,158 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 250.6 MB. Free memory is still 227.0 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 694.41 ms. Allocated memory was 250.6 MB in the beginning and 312.0 MB in the end (delta: 61.3 MB). Free memory was 205.7 MB in the beginning and 265.1 MB in the end (delta: -59.5 MB). Peak memory consumption was 29.4 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 48.81 ms. Allocated memory is still 312.0 MB. Free memory was 265.1 MB in the beginning and 262.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 26.49 ms. Allocated memory is still 312.0 MB. Free memory was 262.6 MB in the beginning and 260.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 463.54 ms. Allocated memory is still 312.0 MB. Free memory was 260.1 MB in the beginning and 238.2 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3037.82 ms. Allocated memory was 312.0 MB in the beginning and 370.1 MB in the end (delta: 58.2 MB). Free memory was 238.2 MB in the beginning and 243.9 MB in the end (delta: -5.6 MB). Peak memory consumption was 52.6 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 596 VarBasedMoverChecksPositive, 54 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 42 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 72 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.4s, 65 PlacesBefore, 27 PlacesAfterwards, 56 TransitionsBefore, 17 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 42 TotalNumberOfCompositions, 1636 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: 2.9s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 33 SDtfs, 23 SDslu, 20 SDs, 0 SdLazy, 132 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=138occurred 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, 0.4s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 2874 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...