/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/VMCAI2021_PN.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe000_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 18:31:16,528 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 18:31:16,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 18:31:16,570 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 18:31:16,570 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 18:31:16,579 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 18:31:16,582 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 18:31:16,586 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 18:31:16,588 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 18:31:16,592 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 18:31:16,593 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 18:31:16,594 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 18:31:16,594 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 18:31:16,597 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 18:31:16,599 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 18:31:16,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 18:31:16,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 18:31:16,602 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 18:31:16,603 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 18:31:16,605 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 18:31:16,606 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 18:31:16,607 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 18:31:16,608 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 18:31:16,609 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 18:31:16,611 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-11 18:31:16,612 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-11 18:31:16,612 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-11 18:31:16,613 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-11 18:31:16,613 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-11 18:31:16,614 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-11 18:31:16,614 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 18:31:16,615 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 18:31:16,616 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 18:31:16,616 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 18:31:16,617 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 18:31:16,618 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 18:31:16,618 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 18:31:16,618 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 18:31:16,619 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 18:31:16,620 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 18:31:16,620 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 18:31:16,621 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-11 18:31:16,642 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 18:31:16,643 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 18:31:16,644 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 18:31:16,644 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 18:31:16,644 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 18:31:16,645 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 18:31:16,645 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 18:31:16,645 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 18:31:16,645 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 18:31:16,645 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 18:31:16,646 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 18:31:16,646 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 18:31:16,646 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 18:31:16,646 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 18:31:16,646 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 18:31:16,646 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 18:31:16,647 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 18:31:16,647 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 18:31:16,647 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 18:31:16,647 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 18:31:16,647 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 18:31:16,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 18:31:16,648 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 18:31:16,648 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 18:31:16,648 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 18:31:16,649 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 18:31:16,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 18:31:16,649 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-11 18:31:16,649 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-11 18:31:16,649 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 18:31:16,960 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 18:31:16,978 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 18:31:16,982 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 18:31:16,984 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 18:31:16,986 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 18:31:16,987 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe000_tso.opt.i [2020-10-11 18:31:17,047 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eab04d73e/ddc166de11b34a0fb7b5b41884565e48/FLAG6a857a4b6 [2020-10-11 18:31:17,581 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 18:31:17,582 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_tso.opt.i [2020-10-11 18:31:17,595 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eab04d73e/ddc166de11b34a0fb7b5b41884565e48/FLAG6a857a4b6 [2020-10-11 18:31:17,875 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eab04d73e/ddc166de11b34a0fb7b5b41884565e48 [2020-10-11 18:31:17,883 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 18:31:17,885 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 18:31:17,886 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 18:31:17,887 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 18:31:17,890 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 18:31:17,891 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:31:17" (1/1) ... [2020-10-11 18:31:17,894 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d56843d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:31:17, skipping insertion in model container [2020-10-11 18:31:17,895 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:31:17" (1/1) ... [2020-10-11 18:31:17,905 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 18:31:17,973 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 18:31:18,474 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:31:18,486 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 18:31:18,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:31:18,646 INFO L208 MainTranslator]: Completed translation [2020-10-11 18:31:18,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:31:18 WrapperNode [2020-10-11 18:31:18,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 18:31:18,648 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 18:31:18,648 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 18:31:18,648 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 18:31:18,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:31:18" (1/1) ... [2020-10-11 18:31:18,675 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:31:18" (1/1) ... [2020-10-11 18:31:18,697 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 18:31:18,698 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 18:31:18,698 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 18:31:18,698 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 18:31:18,707 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:31:18" (1/1) ... [2020-10-11 18:31:18,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:31:18" (1/1) ... [2020-10-11 18:31:18,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:31:18" (1/1) ... [2020-10-11 18:31:18,711 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:31:18" (1/1) ... [2020-10-11 18:31:18,717 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:31:18" (1/1) ... [2020-10-11 18:31:18,719 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:31:18" (1/1) ... [2020-10-11 18:31:18,722 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:31:18" (1/1) ... [2020-10-11 18:31:18,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 18:31:18,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 18:31:18,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 18:31:18,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 18:31:18,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:31:18" (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 [2020-10-11 18:31:18,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 18:31:18,796 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-11 18:31:18,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 18:31:18,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 18:31:18,796 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-11 18:31:18,796 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-11 18:31:18,797 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-11 18:31:18,797 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-11 18:31:18,797 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-11 18:31:18,797 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-11 18:31:18,797 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-11 18:31:18,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 18:31:18,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 18:31:18,799 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 18:31:19,151 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 18:31:19,152 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-11 18:31:19,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:31:19 BoogieIcfgContainer [2020-10-11 18:31:19,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 18:31:19,155 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 18:31:19,156 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 18:31:19,159 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 18:31:19,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 06:31:17" (1/3) ... [2020-10-11 18:31:19,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6408b9e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:31:19, skipping insertion in model container [2020-10-11 18:31:19,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:31:18" (2/3) ... [2020-10-11 18:31:19,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6408b9e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:31:19, skipping insertion in model container [2020-10-11 18:31:19,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:31:19" (3/3) ... [2020-10-11 18:31:19,162 INFO L111 eAbstractionObserver]: Analyzing ICFG safe000_tso.opt.i [2020-10-11 18:31:19,173 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 18:31:19,179 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-11 18:31:19,180 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 18:31:19,206 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:19,206 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:19,206 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:19,206 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:19,207 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:19,207 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:19,208 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:19,208 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:19,208 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:19,208 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:19,209 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:19,209 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:19,209 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:19,210 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:19,210 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:19,210 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:19,210 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:19,211 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:19,214 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:19,215 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:19,215 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:19,215 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:19,223 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:19,223 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:19,224 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:19,224 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:19,226 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:19,227 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:19,227 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:19,227 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:19,246 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-11 18:31:19,268 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 18:31:19,269 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-11 18:31:19,269 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 18:31:19,269 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 18:31:19,269 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 18:31:19,269 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 18:31:19,269 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 18:31:19,269 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 18:31:19,283 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-11 18:31:19,326 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-11 18:31:19,327 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:31:19,332 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 46 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. [2020-10-11 18:31:19,332 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 70 transitions, 155 flow [2020-10-11 18:31:19,338 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 121 flow [2020-10-11 18:31:19,357 INFO L129 PetriNetUnfolder]: 1/55 cut-off events. [2020-10-11 18:31:19,357 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:31:19,358 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:31:19,359 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:31:19,359 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:31:19,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:31:19,366 INFO L82 PathProgramCache]: Analyzing trace with hash -927851968, now seen corresponding path program 1 times [2020-10-11 18:31:19,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:31:19,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724989786] [2020-10-11 18:31:19,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:31:19,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:31:19,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:31:19,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724989786] [2020-10-11 18:31:19,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:31:19,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:31:19,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920083160] [2020-10-11 18:31:19,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:31:19,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:31:19,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:31:19,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:31:20,074 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 70 [2020-10-11 18:31:20,077 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 121 flow. Second operand 6 states. [2020-10-11 18:31:20,077 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:31:20,077 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 70 [2020-10-11 18:31:20,079 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:31:20,253 INFO L129 PetriNetUnfolder]: 3/70 cut-off events. [2020-10-11 18:31:20,253 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:31:20,254 INFO L80 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 70 events. 3/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 95 event pairs, 0 based on Foata normal form. 4/73 useless extension candidates. Maximal degree in co-relation 75. Up to 7 conditions per place. [2020-10-11 18:31:20,255 INFO L132 encePairwiseOnDemand]: 63/70 looper letters, 6 selfloop transitions, 2 changer transitions 11/65 dead transitions. [2020-10-11 18:31:20,255 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 65 transitions, 175 flow [2020-10-11 18:31:20,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:31:20,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:31:20,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 562 transitions. [2020-10-11 18:31:20,275 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8920634920634921 [2020-10-11 18:31:20,276 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 562 transitions. [2020-10-11 18:31:20,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 562 transitions. [2020-10-11 18:31:20,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:31:20,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 562 transitions. [2020-10-11 18:31:20,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:31:20,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:31:20,297 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:31:20,300 INFO L185 Difference]: Start difference. First operand has 65 places, 56 transitions, 121 flow. Second operand 9 states and 562 transitions. [2020-10-11 18:31:20,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 65 transitions, 175 flow [2020-10-11 18:31:20,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 65 transitions, 172 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-11 18:31:20,310 INFO L241 Difference]: Finished difference. Result has 77 places, 54 transitions, 134 flow [2020-10-11 18:31:20,314 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=134, PETRI_PLACES=77, PETRI_TRANSITIONS=54} [2020-10-11 18:31:20,316 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 12 predicate places. [2020-10-11 18:31:20,316 INFO L481 AbstractCegarLoop]: Abstraction has has 77 places, 54 transitions, 134 flow [2020-10-11 18:31:20,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:31:20,316 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:31:20,317 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:31:20,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 18:31:20,317 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:31:20,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:31:20,318 INFO L82 PathProgramCache]: Analyzing trace with hash -6847167, now seen corresponding path program 1 times [2020-10-11 18:31:20,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:31:20,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012084487] [2020-10-11 18:31:20,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:31:20,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:31:20,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:31:20,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012084487] [2020-10-11 18:31:20,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:31:20,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:31:20,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808478306] [2020-10-11 18:31:20,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:31:20,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:31:20,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:31:20,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:31:20,629 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 70 [2020-10-11 18:31:20,630 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 54 transitions, 134 flow. Second operand 6 states. [2020-10-11 18:31:20,630 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:31:20,630 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 70 [2020-10-11 18:31:20,630 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:31:20,746 INFO L129 PetriNetUnfolder]: 3/69 cut-off events. [2020-10-11 18:31:20,746 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2020-10-11 18:31:20,747 INFO L80 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 69 events. 3/69 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 92 event pairs, 0 based on Foata normal form. 2/71 useless extension candidates. Maximal degree in co-relation 108. Up to 7 conditions per place. [2020-10-11 18:31:20,747 INFO L132 encePairwiseOnDemand]: 64/70 looper letters, 6 selfloop transitions, 2 changer transitions 10/64 dead transitions. [2020-10-11 18:31:20,747 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 64 transitions, 208 flow [2020-10-11 18:31:20,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:31:20,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:31:20,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 560 transitions. [2020-10-11 18:31:20,751 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2020-10-11 18:31:20,751 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 560 transitions. [2020-10-11 18:31:20,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 560 transitions. [2020-10-11 18:31:20,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:31:20,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 560 transitions. [2020-10-11 18:31:20,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:31:20,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:31:20,756 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:31:20,756 INFO L185 Difference]: Start difference. First operand has 77 places, 54 transitions, 134 flow. Second operand 9 states and 560 transitions. [2020-10-11 18:31:20,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 64 transitions, 208 flow [2020-10-11 18:31:20,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 64 transitions, 176 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-11 18:31:20,761 INFO L241 Difference]: Finished difference. Result has 77 places, 54 transitions, 138 flow [2020-10-11 18:31:20,761 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=138, PETRI_PLACES=77, PETRI_TRANSITIONS=54} [2020-10-11 18:31:20,762 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 12 predicate places. [2020-10-11 18:31:20,762 INFO L481 AbstractCegarLoop]: Abstraction has has 77 places, 54 transitions, 138 flow [2020-10-11 18:31:20,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:31:20,763 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:31:20,763 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:31:20,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 18:31:20,763 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:31:20,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:31:20,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1974528386, now seen corresponding path program 1 times [2020-10-11 18:31:20,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:31:20,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530682040] [2020-10-11 18:31:20,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:31:20,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:31:20,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:31:20,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530682040] [2020-10-11 18:31:20,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:31:20,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:31:20,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088363804] [2020-10-11 18:31:20,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:31:20,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:31:20,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:31:20,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:31:21,146 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-11 18:31:21,147 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 54 transitions, 138 flow. Second operand 7 states. [2020-10-11 18:31:21,147 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:31:21,147 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-11 18:31:21,147 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:31:21,336 INFO L129 PetriNetUnfolder]: 30/145 cut-off events. [2020-10-11 18:31:21,336 INFO L130 PetriNetUnfolder]: For 51/73 co-relation queries the response was YES. [2020-10-11 18:31:21,338 INFO L80 FinitePrefix]: Finished finitePrefix Result has 294 conditions, 145 events. 30/145 cut-off events. For 51/73 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 490 event pairs, 5 based on Foata normal form. 4/144 useless extension candidates. Maximal degree in co-relation 264. Up to 31 conditions per place. [2020-10-11 18:31:21,339 INFO L132 encePairwiseOnDemand]: 61/70 looper letters, 10 selfloop transitions, 5 changer transitions 21/79 dead transitions. [2020-10-11 18:31:21,339 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 79 transitions, 287 flow [2020-10-11 18:31:21,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 18:31:21,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-11 18:31:21,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 608 transitions. [2020-10-11 18:31:21,343 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8685714285714285 [2020-10-11 18:31:21,343 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 608 transitions. [2020-10-11 18:31:21,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 608 transitions. [2020-10-11 18:31:21,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:31:21,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 608 transitions. [2020-10-11 18:31:21,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-11 18:31:21,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-11 18:31:21,348 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-11 18:31:21,362 INFO L185 Difference]: Start difference. First operand has 77 places, 54 transitions, 138 flow. Second operand 10 states and 608 transitions. [2020-10-11 18:31:21,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 79 transitions, 287 flow [2020-10-11 18:31:21,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 79 transitions, 253 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-11 18:31:21,368 INFO L241 Difference]: Finished difference. Result has 80 places, 56 transitions, 176 flow [2020-10-11 18:31:21,368 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=176, PETRI_PLACES=80, PETRI_TRANSITIONS=56} [2020-10-11 18:31:21,368 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 15 predicate places. [2020-10-11 18:31:21,368 INFO L481 AbstractCegarLoop]: Abstraction has has 80 places, 56 transitions, 176 flow [2020-10-11 18:31:21,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:31:21,369 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:31:21,369 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:31:21,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 18:31:21,369 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:31:21,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:31:21,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1757534868, now seen corresponding path program 1 times [2020-10-11 18:31:21,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:31:21,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343771261] [2020-10-11 18:31:21,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:31:21,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:31:21,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:31:21,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343771261] [2020-10-11 18:31:21,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:31:21,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:31:21,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223451083] [2020-10-11 18:31:21,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:31:21,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:31:21,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:31:21,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:31:21,706 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-11 18:31:21,707 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 56 transitions, 176 flow. Second operand 7 states. [2020-10-11 18:31:21,707 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:31:21,707 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-11 18:31:21,708 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:31:21,821 INFO L129 PetriNetUnfolder]: 14/112 cut-off events. [2020-10-11 18:31:21,822 INFO L130 PetriNetUnfolder]: For 185/228 co-relation queries the response was YES. [2020-10-11 18:31:21,823 INFO L80 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 112 events. 14/112 cut-off events. For 185/228 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 333 event pairs, 5 based on Foata normal form. 4/114 useless extension candidates. Maximal degree in co-relation 276. Up to 25 conditions per place. [2020-10-11 18:31:21,824 INFO L132 encePairwiseOnDemand]: 61/70 looper letters, 7 selfloop transitions, 4 changer transitions 14/68 dead transitions. [2020-10-11 18:31:21,824 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 68 transitions, 323 flow [2020-10-11 18:31:21,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 18:31:21,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-11 18:31:21,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 425 transitions. [2020-10-11 18:31:21,826 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8673469387755102 [2020-10-11 18:31:21,826 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 425 transitions. [2020-10-11 18:31:21,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 425 transitions. [2020-10-11 18:31:21,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:31:21,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 425 transitions. [2020-10-11 18:31:21,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-11 18:31:21,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-11 18:31:21,829 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-11 18:31:21,830 INFO L185 Difference]: Start difference. First operand has 80 places, 56 transitions, 176 flow. Second operand 7 states and 425 transitions. [2020-10-11 18:31:21,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 68 transitions, 323 flow [2020-10-11 18:31:21,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 68 transitions, 294 flow, removed 11 selfloop flow, removed 5 redundant places. [2020-10-11 18:31:21,834 INFO L241 Difference]: Finished difference. Result has 79 places, 54 transitions, 166 flow [2020-10-11 18:31:21,835 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=166, PETRI_PLACES=79, PETRI_TRANSITIONS=54} [2020-10-11 18:31:21,835 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 14 predicate places. [2020-10-11 18:31:21,835 INFO L481 AbstractCegarLoop]: Abstraction has has 79 places, 54 transitions, 166 flow [2020-10-11 18:31:21,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:31:21,835 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:31:21,835 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:31:21,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 18:31:21,836 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:31:21,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:31:21,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1145731939, now seen corresponding path program 1 times [2020-10-11 18:31:21,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:31:21,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844385616] [2020-10-11 18:31:21,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:31:21,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:31:21,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:31:21,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844385616] [2020-10-11 18:31:21,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:31:21,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:31:21,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3899972] [2020-10-11 18:31:21,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:31:21,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:31:21,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:31:21,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:31:22,155 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-11 18:31:22,156 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 54 transitions, 166 flow. Second operand 7 states. [2020-10-11 18:31:22,156 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:31:22,156 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-11 18:31:22,156 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:31:22,327 INFO L129 PetriNetUnfolder]: 4/75 cut-off events. [2020-10-11 18:31:22,327 INFO L130 PetriNetUnfolder]: For 99/107 co-relation queries the response was YES. [2020-10-11 18:31:22,328 INFO L80 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 75 events. 4/75 cut-off events. For 99/107 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 121 event pairs, 0 based on Foata normal form. 4/79 useless extension candidates. Maximal degree in co-relation 164. Up to 11 conditions per place. [2020-10-11 18:31:22,328 INFO L132 encePairwiseOnDemand]: 63/70 looper letters, 9 selfloop transitions, 2 changer transitions 13/67 dead transitions. [2020-10-11 18:31:22,328 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 67 transitions, 306 flow [2020-10-11 18:31:22,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 18:31:22,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-11 18:31:22,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 653 transitions. [2020-10-11 18:31:22,332 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8480519480519481 [2020-10-11 18:31:22,332 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 653 transitions. [2020-10-11 18:31:22,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 653 transitions. [2020-10-11 18:31:22,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:31:22,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 653 transitions. [2020-10-11 18:31:22,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 12 states. [2020-10-11 18:31:22,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 12 states. [2020-10-11 18:31:22,337 INFO L81 ComplementDD]: Finished complementDD. Result 12 states. [2020-10-11 18:31:22,337 INFO L185 Difference]: Start difference. First operand has 79 places, 54 transitions, 166 flow. Second operand 11 states and 653 transitions. [2020-10-11 18:31:22,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 67 transitions, 306 flow [2020-10-11 18:31:22,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 67 transitions, 266 flow, removed 15 selfloop flow, removed 7 redundant places. [2020-10-11 18:31:22,348 INFO L241 Difference]: Finished difference. Result has 88 places, 54 transitions, 170 flow [2020-10-11 18:31:22,349 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=170, PETRI_PLACES=88, PETRI_TRANSITIONS=54} [2020-10-11 18:31:22,349 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 23 predicate places. [2020-10-11 18:31:22,349 INFO L481 AbstractCegarLoop]: Abstraction has has 88 places, 54 transitions, 170 flow [2020-10-11 18:31:22,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:31:22,350 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:31:22,350 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:31:22,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 18:31:22,350 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:31:22,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:31:22,351 INFO L82 PathProgramCache]: Analyzing trace with hash -725384443, now seen corresponding path program 1 times [2020-10-11 18:31:22,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:31:22,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232156642] [2020-10-11 18:31:22,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:31:22,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:31:22,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:31:22,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232156642] [2020-10-11 18:31:22,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:31:22,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:31:22,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382588547] [2020-10-11 18:31:22,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:31:22,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:31:22,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:31:22,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:31:22,790 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 70 [2020-10-11 18:31:22,791 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 54 transitions, 170 flow. Second operand 7 states. [2020-10-11 18:31:22,791 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:31:22,791 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 70 [2020-10-11 18:31:22,792 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:31:22,921 INFO L129 PetriNetUnfolder]: 4/60 cut-off events. [2020-10-11 18:31:22,921 INFO L130 PetriNetUnfolder]: For 59/59 co-relation queries the response was YES. [2020-10-11 18:31:22,921 INFO L80 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 60 events. 4/60 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 52 event pairs, 0 based on Foata normal form. 2/62 useless extension candidates. Maximal degree in co-relation 119. Up to 5 conditions per place. [2020-10-11 18:31:22,922 INFO L132 encePairwiseOnDemand]: 63/70 looper letters, 0 selfloop transitions, 0 changer transitions 59/59 dead transitions. [2020-10-11 18:31:22,922 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 59 transitions, 228 flow [2020-10-11 18:31:22,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 18:31:22,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-11 18:31:22,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 598 transitions. [2020-10-11 18:31:22,925 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8542857142857143 [2020-10-11 18:31:22,925 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 598 transitions. [2020-10-11 18:31:22,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 598 transitions. [2020-10-11 18:31:22,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:31:22,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 598 transitions. [2020-10-11 18:31:22,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-11 18:31:22,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-11 18:31:22,930 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-11 18:31:22,930 INFO L185 Difference]: Start difference. First operand has 88 places, 54 transitions, 170 flow. Second operand 10 states and 598 transitions. [2020-10-11 18:31:22,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 59 transitions, 228 flow [2020-10-11 18:31:22,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 59 transitions, 174 flow, removed 23 selfloop flow, removed 12 redundant places. [2020-10-11 18:31:22,932 INFO L241 Difference]: Finished difference. Result has 75 places, 0 transitions, 0 flow [2020-10-11 18:31:22,932 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=75, PETRI_TRANSITIONS=0} [2020-10-11 18:31:22,933 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 10 predicate places. [2020-10-11 18:31:22,933 INFO L481 AbstractCegarLoop]: Abstraction has has 75 places, 0 transitions, 0 flow [2020-10-11 18:31:22,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:31:22,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 18:31:22,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 06:31:22 BasicIcfg [2020-10-11 18:31:22,940 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 18:31:22,942 INFO L168 Benchmark]: Toolchain (without parser) took 5056.48 ms. Allocated memory was 252.2 MB in the beginning and 423.6 MB in the end (delta: 171.4 MB). Free memory was 208.0 MB in the beginning and 332.2 MB in the end (delta: -124.3 MB). Peak memory consumption was 47.2 MB. Max. memory is 14.2 GB. [2020-10-11 18:31:22,943 INFO L168 Benchmark]: CDTParser took 0.46 ms. Allocated memory is still 252.2 MB. Free memory was 230.2 MB in the beginning and 229.4 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. [2020-10-11 18:31:22,944 INFO L168 Benchmark]: CACSL2BoogieTranslator took 761.39 ms. Allocated memory was 252.2 MB in the beginning and 316.1 MB in the end (delta: 64.0 MB). Free memory was 208.0 MB in the beginning and 267.1 MB in the end (delta: -59.1 MB). Peak memory consumption was 27.0 MB. Max. memory is 14.2 GB. [2020-10-11 18:31:22,945 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.27 ms. Allocated memory is still 316.1 MB. Free memory was 267.1 MB in the beginning and 265.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-11 18:31:22,945 INFO L168 Benchmark]: Boogie Preprocessor took 27.64 ms. Allocated memory is still 316.1 MB. Free memory was 265.4 MB in the beginning and 263.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-11 18:31:22,946 INFO L168 Benchmark]: RCFGBuilder took 428.80 ms. Allocated memory is still 316.1 MB. Free memory was 263.7 MB in the beginning and 240.3 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 14.2 GB. [2020-10-11 18:31:22,947 INFO L168 Benchmark]: TraceAbstraction took 3784.19 ms. Allocated memory was 316.1 MB in the beginning and 423.6 MB in the end (delta: 107.5 MB). Free memory was 240.3 MB in the beginning and 332.2 MB in the end (delta: -92.0 MB). Peak memory consumption was 15.5 MB. Max. memory is 14.2 GB. [2020-10-11 18:31:22,951 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46 ms. Allocated memory is still 252.2 MB. Free memory was 230.2 MB in the beginning and 229.4 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 761.39 ms. Allocated memory was 252.2 MB in the beginning and 316.1 MB in the end (delta: 64.0 MB). Free memory was 208.0 MB in the beginning and 267.1 MB in the end (delta: -59.1 MB). Peak memory consumption was 27.0 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 49.27 ms. Allocated memory is still 316.1 MB. Free memory was 267.1 MB in the beginning and 265.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 27.64 ms. Allocated memory is still 316.1 MB. Free memory was 265.4 MB in the beginning and 263.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * RCFGBuilder took 428.80 ms. Allocated memory is still 316.1 MB. Free memory was 263.7 MB in the beginning and 240.3 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3784.19 ms. Allocated memory was 316.1 MB in the beginning and 423.6 MB in the end (delta: 107.5 MB). Free memory was 240.3 MB in the beginning and 332.2 MB in the end (delta: -92.0 MB). Peak memory consumption was 15.5 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 3.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 214 SDtfs, 198 SDslu, 551 SDs, 0 SdLazy, 435 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 75 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=176occurred in iteration=3, 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, 0.7s InterpolantComputationTime, 242 NumberOfCodeBlocks, 242 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 236 ConstructedInterpolants, 0 QuantifiedInterpolants, 28258 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...