/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/safe015_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 18:36:46,443 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 18:36:46,446 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 18:36:46,488 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 18:36:46,489 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 18:36:46,490 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 18:36:46,491 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 18:36:46,493 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 18:36:46,495 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 18:36:46,495 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 18:36:46,496 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 18:36:46,498 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 18:36:46,498 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 18:36:46,499 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 18:36:46,500 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 18:36:46,501 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 18:36:46,502 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 18:36:46,506 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 18:36:46,508 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 18:36:46,510 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 18:36:46,512 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 18:36:46,513 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 18:36:46,514 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 18:36:46,515 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 18:36:46,517 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-11 18:36:46,518 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-11 18:36:46,518 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-11 18:36:46,519 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-11 18:36:46,519 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-11 18:36:46,520 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-11 18:36:46,520 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 18:36:46,521 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 18:36:46,522 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 18:36:46,523 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 18:36:46,524 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 18:36:46,524 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 18:36:46,525 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 18:36:46,525 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 18:36:46,525 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 18:36:46,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 18:36:46,527 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 18:36:46,528 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 18:36:46,551 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 18:36:46,551 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 18:36:46,552 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 18:36:46,552 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 18:36:46,553 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 18:36:46,553 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 18:36:46,553 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 18:36:46,553 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 18:36:46,553 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 18:36:46,554 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 18:36:46,554 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 18:36:46,554 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 18:36:46,554 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 18:36:46,555 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 18:36:46,555 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 18:36:46,555 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 18:36:46,555 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 18:36:46,555 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 18:36:46,556 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 18:36:46,556 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 18:36:46,556 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 18:36:46,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 18:36:46,557 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 18:36:46,557 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 18:36:46,557 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 18:36:46,557 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 18:36:46,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 18:36:46,557 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-11 18:36:46,558 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-11 18:36:46,558 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 18:36:46,845 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 18:36:46,863 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 18:36:46,869 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 18:36:46,871 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 18:36:46,871 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 18:36:46,872 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_tso.opt.i [2020-10-11 18:36:46,942 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/384e9d49f/366c3089a7ab4557904d4addeaadcc47/FLAGa10d01129 [2020-10-11 18:36:47,445 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 18:36:47,445 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_tso.opt.i [2020-10-11 18:36:47,463 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/384e9d49f/366c3089a7ab4557904d4addeaadcc47/FLAGa10d01129 [2020-10-11 18:36:47,770 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/384e9d49f/366c3089a7ab4557904d4addeaadcc47 [2020-10-11 18:36:47,778 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 18:36:47,780 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 18:36:47,781 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 18:36:47,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 18:36:47,785 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 18:36:47,786 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:36:47" (1/1) ... [2020-10-11 18:36:47,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@485c5fd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:36:47, skipping insertion in model container [2020-10-11 18:36:47,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:36:47" (1/1) ... [2020-10-11 18:36:47,797 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 18:36:47,871 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 18:36:48,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:36:48,536 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 18:36:48,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:36:48,687 INFO L208 MainTranslator]: Completed translation [2020-10-11 18:36:48,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:36:48 WrapperNode [2020-10-11 18:36:48,688 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 18:36:48,690 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 18:36:48,690 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 18:36:48,690 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 18:36:48,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:36:48" (1/1) ... [2020-10-11 18:36:48,715 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:36:48" (1/1) ... [2020-10-11 18:36:48,735 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 18:36:48,736 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 18:36:48,736 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 18:36:48,736 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 18:36:48,743 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:36:48" (1/1) ... [2020-10-11 18:36:48,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:36:48" (1/1) ... [2020-10-11 18:36:48,746 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:36:48" (1/1) ... [2020-10-11 18:36:48,747 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:36:48" (1/1) ... [2020-10-11 18:36:48,754 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:36:48" (1/1) ... [2020-10-11 18:36:48,756 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:36:48" (1/1) ... [2020-10-11 18:36:48,758 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:36:48" (1/1) ... [2020-10-11 18:36:48,761 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 18:36:48,762 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 18:36:48,762 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 18:36:48,762 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 18:36:48,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:36:48" (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 18:36:48,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 18:36:48,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-11 18:36:48,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 18:36:48,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 18:36:48,838 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-11 18:36:48,839 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-11 18:36:48,839 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-11 18:36:48,839 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-11 18:36:48,839 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-11 18:36:48,839 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-11 18:36:48,840 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-11 18:36:48,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 18:36:48,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 18:36:48,842 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 18:36:49,178 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 18:36:49,179 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-11 18:36:49,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:36:49 BoogieIcfgContainer [2020-10-11 18:36:49,182 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 18:36:49,183 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 18:36:49,183 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 18:36:49,187 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 18:36:49,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 06:36:47" (1/3) ... [2020-10-11 18:36:49,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42e3762f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:36:49, skipping insertion in model container [2020-10-11 18:36:49,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:36:48" (2/3) ... [2020-10-11 18:36:49,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42e3762f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:36:49, skipping insertion in model container [2020-10-11 18:36:49,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:36:49" (3/3) ... [2020-10-11 18:36:49,191 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_tso.opt.i [2020-10-11 18:36:49,201 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 18:36:49,208 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-11 18:36:49,209 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 18:36:49,238 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:49,239 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:49,239 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:49,239 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:49,240 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:49,240 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:49,241 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:49,241 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:49,241 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:49,241 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:49,244 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:49,244 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:49,244 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:49,245 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:49,245 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:49,245 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:49,245 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:49,246 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:49,249 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:49,250 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:49,250 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:49,250 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:49,258 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:49,259 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:49,259 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:49,259 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:49,264 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:49,264 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:49,264 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:49,264 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:49,290 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-11 18:36:49,312 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 18:36:49,312 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-11 18:36:49,312 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 18:36:49,312 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 18:36:49,313 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 18:36:49,313 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 18:36:49,313 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 18:36:49,313 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 18:36:49,327 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-11 18:36:49,370 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-11 18:36:49,370 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:36:49,375 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-11 18:36:49,375 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 69 transitions, 153 flow [2020-10-11 18:36:49,381 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 55 transitions, 119 flow [2020-10-11 18:36:49,406 INFO L129 PetriNetUnfolder]: 1/54 cut-off events. [2020-10-11 18:36:49,406 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:36:49,407 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:36:49,408 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] [2020-10-11 18:36:49,408 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:36:49,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:36:49,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1532593683, now seen corresponding path program 1 times [2020-10-11 18:36:49,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:36:49,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693255226] [2020-10-11 18:36:49,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:36:49,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:36:49,853 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 18:36:49,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693255226] [2020-10-11 18:36:49,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:36:49,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:36:49,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885413139] [2020-10-11 18:36:49,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:36:49,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:36:49,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:36:49,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:36:50,209 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 69 [2020-10-11 18:36:50,211 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 119 flow. Second operand 6 states. [2020-10-11 18:36:50,211 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:36:50,211 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 69 [2020-10-11 18:36:50,213 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:36:50,360 INFO L129 PetriNetUnfolder]: 11/89 cut-off events. [2020-10-11 18:36:50,360 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:36:50,361 INFO L80 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 89 events. 11/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 175 event pairs, 5 based on Foata normal form. 5/92 useless extension candidates. Maximal degree in co-relation 113. Up to 19 conditions per place. [2020-10-11 18:36:50,363 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 7 selfloop transitions, 2 changer transitions 14/67 dead transitions. [2020-10-11 18:36:50,363 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 67 transitions, 187 flow [2020-10-11 18:36:50,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:36:50,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:36:50,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 548 transitions. [2020-10-11 18:36:50,382 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8824476650563607 [2020-10-11 18:36:50,383 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 548 transitions. [2020-10-11 18:36:50,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 548 transitions. [2020-10-11 18:36:50,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:36:50,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 548 transitions. [2020-10-11 18:36:50,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:36:50,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:36:50,404 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:36:50,407 INFO L185 Difference]: Start difference. First operand has 64 places, 55 transitions, 119 flow. Second operand 9 states and 548 transitions. [2020-10-11 18:36:50,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 67 transitions, 187 flow [2020-10-11 18:36:50,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 67 transitions, 184 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-11 18:36:50,417 INFO L241 Difference]: Finished difference. Result has 76 places, 53 transitions, 132 flow [2020-10-11 18:36:50,420 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=61, 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=132, PETRI_PLACES=76, PETRI_TRANSITIONS=53} [2020-10-11 18:36:50,421 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 12 predicate places. [2020-10-11 18:36:50,421 INFO L481 AbstractCegarLoop]: Abstraction has has 76 places, 53 transitions, 132 flow [2020-10-11 18:36:50,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:36:50,421 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:36:50,422 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] [2020-10-11 18:36:50,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 18:36:50,422 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:36:50,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:36:50,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1178506004, now seen corresponding path program 1 times [2020-10-11 18:36:50,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:36:50,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349503765] [2020-10-11 18:36:50,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:36:50,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:36:50,557 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 18:36:50,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349503765] [2020-10-11 18:36:50,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:36:50,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:36:50,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78518368] [2020-10-11 18:36:50,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:36:50,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:36:50,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:36:50,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:36:50,781 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 69 [2020-10-11 18:36:50,783 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 53 transitions, 132 flow. Second operand 6 states. [2020-10-11 18:36:50,783 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:36:50,783 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 69 [2020-10-11 18:36:50,784 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:36:50,895 INFO L129 PetriNetUnfolder]: 3/67 cut-off events. [2020-10-11 18:36:50,896 INFO L130 PetriNetUnfolder]: For 15/16 co-relation queries the response was YES. [2020-10-11 18:36:50,896 INFO L80 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 67 events. 3/67 cut-off events. For 15/16 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 79 event pairs, 0 based on Foata normal form. 2/69 useless extension candidates. Maximal degree in co-relation 107. Up to 9 conditions per place. [2020-10-11 18:36:50,897 INFO L132 encePairwiseOnDemand]: 63/69 looper letters, 7 selfloop transitions, 2 changer transitions 10/63 dead transitions. [2020-10-11 18:36:50,897 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 63 transitions, 208 flow [2020-10-11 18:36:50,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:36:50,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:36:50,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 543 transitions. [2020-10-11 18:36:50,901 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8743961352657005 [2020-10-11 18:36:50,901 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 543 transitions. [2020-10-11 18:36:50,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 543 transitions. [2020-10-11 18:36:50,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:36:50,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 543 transitions. [2020-10-11 18:36:50,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:36:50,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:36:50,906 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:36:50,906 INFO L185 Difference]: Start difference. First operand has 76 places, 53 transitions, 132 flow. Second operand 9 states and 543 transitions. [2020-10-11 18:36:50,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 63 transitions, 208 flow [2020-10-11 18:36:50,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 63 transitions, 176 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-11 18:36:50,911 INFO L241 Difference]: Finished difference. Result has 76 places, 53 transitions, 136 flow [2020-10-11 18:36:50,912 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=136, PETRI_PLACES=76, PETRI_TRANSITIONS=53} [2020-10-11 18:36:50,912 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 12 predicate places. [2020-10-11 18:36:50,913 INFO L481 AbstractCegarLoop]: Abstraction has has 76 places, 53 transitions, 136 flow [2020-10-11 18:36:50,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:36:50,913 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:36:50,913 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 18:36:50,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 18:36:50,914 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:36:50,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:36:50,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1530637996, now seen corresponding path program 1 times [2020-10-11 18:36:50,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:36:50,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872028744] [2020-10-11 18:36:50,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:36:50,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:36:51,032 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 18:36:51,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872028744] [2020-10-11 18:36:51,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:36:51,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:36:51,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045273820] [2020-10-11 18:36:51,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:36:51,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:36:51,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:36:51,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:36:51,181 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 69 [2020-10-11 18:36:51,181 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 53 transitions, 136 flow. Second operand 6 states. [2020-10-11 18:36:51,182 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:36:51,182 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 69 [2020-10-11 18:36:51,182 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:36:51,292 INFO L129 PetriNetUnfolder]: 3/68 cut-off events. [2020-10-11 18:36:51,292 INFO L130 PetriNetUnfolder]: For 22/24 co-relation queries the response was YES. [2020-10-11 18:36:51,293 INFO L80 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 68 events. 3/68 cut-off events. For 22/24 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 89 event pairs, 0 based on Foata normal form. 2/70 useless extension candidates. Maximal degree in co-relation 110. Up to 7 conditions per place. [2020-10-11 18:36:51,294 INFO L132 encePairwiseOnDemand]: 63/69 looper letters, 6 selfloop transitions, 2 changer transitions 10/63 dead transitions. [2020-10-11 18:36:51,294 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 63 transitions, 212 flow [2020-10-11 18:36:51,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:36:51,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:36:51,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 551 transitions. [2020-10-11 18:36:51,297 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8872785829307569 [2020-10-11 18:36:51,297 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 551 transitions. [2020-10-11 18:36:51,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 551 transitions. [2020-10-11 18:36:51,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:36:51,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 551 transitions. [2020-10-11 18:36:51,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:36:51,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:36:51,302 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:36:51,302 INFO L185 Difference]: Start difference. First operand has 76 places, 53 transitions, 136 flow. Second operand 9 states and 551 transitions. [2020-10-11 18:36:51,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 63 transitions, 212 flow [2020-10-11 18:36:51,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 63 transitions, 180 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-11 18:36:51,306 INFO L241 Difference]: Finished difference. Result has 77 places, 53 transitions, 140 flow [2020-10-11 18:36:51,307 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=140, PETRI_PLACES=77, PETRI_TRANSITIONS=53} [2020-10-11 18:36:51,307 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 13 predicate places. [2020-10-11 18:36:51,307 INFO L481 AbstractCegarLoop]: Abstraction has has 77 places, 53 transitions, 140 flow [2020-10-11 18:36:51,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:36:51,307 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:36:51,308 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 18:36:51,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 18:36:51,308 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:36:51,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:36:51,309 INFO L82 PathProgramCache]: Analyzing trace with hash 859278381, now seen corresponding path program 1 times [2020-10-11 18:36:51,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:36:51,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080247368] [2020-10-11 18:36:51,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:36:51,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:36:51,431 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 18:36:51,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080247368] [2020-10-11 18:36:51,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:36:51,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:36:51,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037068334] [2020-10-11 18:36:51,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:36:51,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:36:51,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:36:51,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:36:51,592 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 69 [2020-10-11 18:36:51,593 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 53 transitions, 140 flow. Second operand 6 states. [2020-10-11 18:36:51,593 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:36:51,593 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 69 [2020-10-11 18:36:51,594 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:36:51,711 INFO L129 PetriNetUnfolder]: 24/131 cut-off events. [2020-10-11 18:36:51,712 INFO L130 PetriNetUnfolder]: For 72/76 co-relation queries the response was YES. [2020-10-11 18:36:51,713 INFO L80 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 131 events. 24/131 cut-off events. For 72/76 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 407 event pairs, 5 based on Foata normal form. 4/133 useless extension candidates. Maximal degree in co-relation 229. Up to 31 conditions per place. [2020-10-11 18:36:51,714 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 8 selfloop transitions, 3 changer transitions 19/74 dead transitions. [2020-10-11 18:36:51,714 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 74 transitions, 264 flow [2020-10-11 18:36:51,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:36:51,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:36:51,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 554 transitions. [2020-10-11 18:36:51,717 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8921095008051529 [2020-10-11 18:36:51,717 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 554 transitions. [2020-10-11 18:36:51,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 554 transitions. [2020-10-11 18:36:51,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:36:51,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 554 transitions. [2020-10-11 18:36:51,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:36:51,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:36:51,721 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:36:51,721 INFO L185 Difference]: Start difference. First operand has 77 places, 53 transitions, 140 flow. Second operand 9 states and 554 transitions. [2020-10-11 18:36:51,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 74 transitions, 264 flow [2020-10-11 18:36:51,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 74 transitions, 232 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-11 18:36:51,725 INFO L241 Difference]: Finished difference. Result has 78 places, 55 transitions, 167 flow [2020-10-11 18:36:51,726 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=167, PETRI_PLACES=78, PETRI_TRANSITIONS=55} [2020-10-11 18:36:51,726 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 14 predicate places. [2020-10-11 18:36:51,726 INFO L481 AbstractCegarLoop]: Abstraction has has 78 places, 55 transitions, 167 flow [2020-10-11 18:36:51,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:36:51,727 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:36:51,727 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 18:36:51,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 18:36:51,727 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:36:51,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:36:51,728 INFO L82 PathProgramCache]: Analyzing trace with hash 2134645173, now seen corresponding path program 1 times [2020-10-11 18:36:51,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:36:51,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910340954] [2020-10-11 18:36:51,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:36:51,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:36:51,832 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 18:36:51,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910340954] [2020-10-11 18:36:51,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:36:51,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:36:51,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46296285] [2020-10-11 18:36:51,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:36:51,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:36:51,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:36:51,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:36:51,975 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 69 [2020-10-11 18:36:51,976 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 55 transitions, 167 flow. Second operand 6 states. [2020-10-11 18:36:51,976 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:36:51,976 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 69 [2020-10-11 18:36:51,976 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:36:52,086 INFO L129 PetriNetUnfolder]: 7/119 cut-off events. [2020-10-11 18:36:52,087 INFO L130 PetriNetUnfolder]: For 170/192 co-relation queries the response was YES. [2020-10-11 18:36:52,088 INFO L80 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 119 events. 7/119 cut-off events. For 170/192 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 387 event pairs, 0 based on Foata normal form. 3/120 useless extension candidates. Maximal degree in co-relation 243. Up to 18 conditions per place. [2020-10-11 18:36:52,089 INFO L132 encePairwiseOnDemand]: 63/69 looper letters, 12 selfloop transitions, 3 changer transitions 10/69 dead transitions. [2020-10-11 18:36:52,089 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 69 transitions, 305 flow [2020-10-11 18:36:52,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:36:52,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:36:52,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 548 transitions. [2020-10-11 18:36:52,092 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8824476650563607 [2020-10-11 18:36:52,092 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 548 transitions. [2020-10-11 18:36:52,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 548 transitions. [2020-10-11 18:36:52,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:36:52,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 548 transitions. [2020-10-11 18:36:52,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:36:52,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:36:52,096 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:36:52,096 INFO L185 Difference]: Start difference. First operand has 78 places, 55 transitions, 167 flow. Second operand 9 states and 548 transitions. [2020-10-11 18:36:52,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 69 transitions, 305 flow [2020-10-11 18:36:52,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 69 transitions, 274 flow, removed 14 selfloop flow, removed 4 redundant places. [2020-10-11 18:36:52,101 INFO L241 Difference]: Finished difference. Result has 83 places, 55 transitions, 179 flow [2020-10-11 18:36:52,101 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=179, PETRI_PLACES=83, PETRI_TRANSITIONS=55} [2020-10-11 18:36:52,101 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 19 predicate places. [2020-10-11 18:36:52,101 INFO L481 AbstractCegarLoop]: Abstraction has has 83 places, 55 transitions, 179 flow [2020-10-11 18:36:52,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:36:52,102 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:36:52,102 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] [2020-10-11 18:36:52,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 18:36:52,102 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:36:52,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:36:52,103 INFO L82 PathProgramCache]: Analyzing trace with hash -960057204, now seen corresponding path program 1 times [2020-10-11 18:36:52,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:36:52,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72062813] [2020-10-11 18:36:52,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:36:52,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:36:52,193 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 18:36:52,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72062813] [2020-10-11 18:36:52,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:36:52,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:36:52,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295537997] [2020-10-11 18:36:52,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:36:52,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:36:52,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:36:52,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:36:52,324 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 69 [2020-10-11 18:36:52,325 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 55 transitions, 179 flow. Second operand 6 states. [2020-10-11 18:36:52,325 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:36:52,325 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 69 [2020-10-11 18:36:52,325 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:36:52,573 INFO L129 PetriNetUnfolder]: 190/507 cut-off events. [2020-10-11 18:36:52,573 INFO L130 PetriNetUnfolder]: For 439/455 co-relation queries the response was YES. [2020-10-11 18:36:52,579 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1094 conditions, 507 events. 190/507 cut-off events. For 439/455 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3060 event pairs, 13 based on Foata normal form. 14/492 useless extension candidates. Maximal degree in co-relation 1057. Up to 161 conditions per place. [2020-10-11 18:36:52,581 INFO L132 encePairwiseOnDemand]: 60/69 looper letters, 10 selfloop transitions, 6 changer transitions 19/80 dead transitions. [2020-10-11 18:36:52,582 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 80 transitions, 299 flow [2020-10-11 18:36:52,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:36:52,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:36:52,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 541 transitions. [2020-10-11 18:36:52,585 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8711755233494364 [2020-10-11 18:36:52,585 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 541 transitions. [2020-10-11 18:36:52,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 541 transitions. [2020-10-11 18:36:52,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:36:52,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 541 transitions. [2020-10-11 18:36:52,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:36:52,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:36:52,589 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:36:52,589 INFO L185 Difference]: Start difference. First operand has 83 places, 55 transitions, 179 flow. Second operand 9 states and 541 transitions. [2020-10-11 18:36:52,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 80 transitions, 299 flow [2020-10-11 18:36:52,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 80 transitions, 278 flow, removed 9 selfloop flow, removed 7 redundant places. [2020-10-11 18:36:52,598 INFO L241 Difference]: Finished difference. Result has 84 places, 58 transitions, 214 flow [2020-10-11 18:36:52,598 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=214, PETRI_PLACES=84, PETRI_TRANSITIONS=58} [2020-10-11 18:36:52,598 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 20 predicate places. [2020-10-11 18:36:52,598 INFO L481 AbstractCegarLoop]: Abstraction has has 84 places, 58 transitions, 214 flow [2020-10-11 18:36:52,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:36:52,599 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:36:52,599 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 18:36:52,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 18:36:52,600 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:36:52,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:36:52,600 INFO L82 PathProgramCache]: Analyzing trace with hash -71570157, now seen corresponding path program 1 times [2020-10-11 18:36:52,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:36:52,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103871194] [2020-10-11 18:36:52,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:36:52,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:36:52,749 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 18:36:52,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103871194] [2020-10-11 18:36:52,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:36:52,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:36:52,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096378832] [2020-10-11 18:36:52,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:36:52,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:36:52,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:36:52,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:36:52,904 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 69 [2020-10-11 18:36:52,905 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 58 transitions, 214 flow. Second operand 7 states. [2020-10-11 18:36:52,905 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:36:52,905 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 69 [2020-10-11 18:36:52,905 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:36:53,158 INFO L129 PetriNetUnfolder]: 107/329 cut-off events. [2020-10-11 18:36:53,161 INFO L130 PetriNetUnfolder]: For 648/682 co-relation queries the response was YES. [2020-10-11 18:36:53,164 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1141 conditions, 329 events. 107/329 cut-off events. For 648/682 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1677 event pairs, 3 based on Foata normal form. 23/341 useless extension candidates. Maximal degree in co-relation 1102. Up to 148 conditions per place. [2020-10-11 18:36:53,166 INFO L132 encePairwiseOnDemand]: 60/69 looper letters, 10 selfloop transitions, 9 changer transitions 19/83 dead transitions. [2020-10-11 18:36:53,167 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 83 transitions, 467 flow [2020-10-11 18:36:53,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 18:36:53,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-11 18:36:53,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 600 transitions. [2020-10-11 18:36:53,176 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8695652173913043 [2020-10-11 18:36:53,176 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 600 transitions. [2020-10-11 18:36:53,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 600 transitions. [2020-10-11 18:36:53,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:36:53,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 600 transitions. [2020-10-11 18:36:53,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-11 18:36:53,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-11 18:36:53,183 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-11 18:36:53,184 INFO L185 Difference]: Start difference. First operand has 84 places, 58 transitions, 214 flow. Second operand 10 states and 600 transitions. [2020-10-11 18:36:53,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 83 transitions, 467 flow [2020-10-11 18:36:53,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 83 transitions, 443 flow, removed 7 selfloop flow, removed 5 redundant places. [2020-10-11 18:36:53,195 INFO L241 Difference]: Finished difference. Result has 90 places, 61 transitions, 282 flow [2020-10-11 18:36:53,196 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=282, PETRI_PLACES=90, PETRI_TRANSITIONS=61} [2020-10-11 18:36:53,196 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 26 predicate places. [2020-10-11 18:36:53,197 INFO L481 AbstractCegarLoop]: Abstraction has has 90 places, 61 transitions, 282 flow [2020-10-11 18:36:53,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:36:53,197 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:36:53,197 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, 1] [2020-10-11 18:36:53,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-11 18:36:53,198 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:36:53,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:36:53,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1646831056, now seen corresponding path program 1 times [2020-10-11 18:36:53,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:36:53,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602546396] [2020-10-11 18:36:53,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:36:53,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:36:53,374 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 18:36:53,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602546396] [2020-10-11 18:36:53,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:36:53,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:36:53,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609834491] [2020-10-11 18:36:53,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:36:53,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:36:53,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:36:53,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:36:53,636 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 69 [2020-10-11 18:36:53,636 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 61 transitions, 282 flow. Second operand 7 states. [2020-10-11 18:36:53,636 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:36:53,636 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 69 [2020-10-11 18:36:53,637 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:36:53,774 INFO L129 PetriNetUnfolder]: 64/363 cut-off events. [2020-10-11 18:36:53,775 INFO L130 PetriNetUnfolder]: For 1232/1303 co-relation queries the response was YES. [2020-10-11 18:36:53,778 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1270 conditions, 363 events. 64/363 cut-off events. For 1232/1303 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2168 event pairs, 17 based on Foata normal form. 15/368 useless extension candidates. Maximal degree in co-relation 1226. Up to 109 conditions per place. [2020-10-11 18:36:53,780 INFO L132 encePairwiseOnDemand]: 61/69 looper letters, 8 selfloop transitions, 4 changer transitions 5/67 dead transitions. [2020-10-11 18:36:53,780 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 67 transitions, 344 flow [2020-10-11 18:36:53,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 18:36:53,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-11 18:36:53,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 410 transitions. [2020-10-11 18:36:53,783 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8488612836438924 [2020-10-11 18:36:53,783 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 410 transitions. [2020-10-11 18:36:53,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 410 transitions. [2020-10-11 18:36:53,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:36:53,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 410 transitions. [2020-10-11 18:36:53,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-11 18:36:53,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-11 18:36:53,788 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-11 18:36:53,788 INFO L185 Difference]: Start difference. First operand has 90 places, 61 transitions, 282 flow. Second operand 7 states and 410 transitions. [2020-10-11 18:36:53,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 67 transitions, 344 flow [2020-10-11 18:36:53,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 67 transitions, 288 flow, removed 20 selfloop flow, removed 9 redundant places. [2020-10-11 18:36:53,796 INFO L241 Difference]: Finished difference. Result has 87 places, 61 transitions, 246 flow [2020-10-11 18:36:53,796 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=246, PETRI_PLACES=87, PETRI_TRANSITIONS=61} [2020-10-11 18:36:53,797 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 23 predicate places. [2020-10-11 18:36:53,797 INFO L481 AbstractCegarLoop]: Abstraction has has 87 places, 61 transitions, 246 flow [2020-10-11 18:36:53,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:36:53,797 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:36:53,797 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, 1] [2020-10-11 18:36:53,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-11 18:36:53,798 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:36:53,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:36:53,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1064793618, now seen corresponding path program 2 times [2020-10-11 18:36:53,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:36:53,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288472034] [2020-10-11 18:36:53,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:36:53,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:36:53,895 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 18:36:53,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288472034] [2020-10-11 18:36:53,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:36:53,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:36:53,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418822500] [2020-10-11 18:36:53,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:36:53,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:36:53,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:36:53,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:36:54,086 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 69 [2020-10-11 18:36:54,086 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 61 transitions, 246 flow. Second operand 7 states. [2020-10-11 18:36:54,087 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:36:54,087 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 69 [2020-10-11 18:36:54,087 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:36:54,248 INFO L129 PetriNetUnfolder]: 66/359 cut-off events. [2020-10-11 18:36:54,248 INFO L130 PetriNetUnfolder]: For 732/761 co-relation queries the response was YES. [2020-10-11 18:36:54,251 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1012 conditions, 359 events. 66/359 cut-off events. For 732/761 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2028 event pairs, 18 based on Foata normal form. 12/358 useless extension candidates. Maximal degree in co-relation 968. Up to 96 conditions per place. [2020-10-11 18:36:54,252 INFO L132 encePairwiseOnDemand]: 63/69 looper letters, 14 selfloop transitions, 2 changer transitions 4/70 dead transitions. [2020-10-11 18:36:54,253 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 70 transitions, 336 flow [2020-10-11 18:36:54,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 18:36:54,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-11 18:36:54,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 413 transitions. [2020-10-11 18:36:54,256 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.855072463768116 [2020-10-11 18:36:54,256 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 413 transitions. [2020-10-11 18:36:54,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 413 transitions. [2020-10-11 18:36:54,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:36:54,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 413 transitions. [2020-10-11 18:36:54,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-11 18:36:54,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-11 18:36:54,261 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-11 18:36:54,261 INFO L185 Difference]: Start difference. First operand has 87 places, 61 transitions, 246 flow. Second operand 7 states and 413 transitions. [2020-10-11 18:36:54,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 70 transitions, 336 flow [2020-10-11 18:36:54,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 70 transitions, 302 flow, removed 12 selfloop flow, removed 7 redundant places. [2020-10-11 18:36:54,267 INFO L241 Difference]: Finished difference. Result has 88 places, 62 transitions, 245 flow [2020-10-11 18:36:54,267 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=245, PETRI_PLACES=88, PETRI_TRANSITIONS=62} [2020-10-11 18:36:54,268 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 24 predicate places. [2020-10-11 18:36:54,268 INFO L481 AbstractCegarLoop]: Abstraction has has 88 places, 62 transitions, 245 flow [2020-10-11 18:36:54,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:36:54,268 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:36:54,268 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, 1] [2020-10-11 18:36:54,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-11 18:36:54,269 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:36:54,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:36:54,269 INFO L82 PathProgramCache]: Analyzing trace with hash 893894326, now seen corresponding path program 3 times [2020-10-11 18:36:54,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:36:54,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042795435] [2020-10-11 18:36:54,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:36:54,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:36:54,396 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 18:36:54,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042795435] [2020-10-11 18:36:54,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:36:54,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:36:54,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86939678] [2020-10-11 18:36:54,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:36:54,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:36:54,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:36:54,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:36:54,681 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 69 [2020-10-11 18:36:54,681 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 62 transitions, 245 flow. Second operand 7 states. [2020-10-11 18:36:54,681 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:36:54,681 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 69 [2020-10-11 18:36:54,681 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:36:54,800 INFO L129 PetriNetUnfolder]: 79/378 cut-off events. [2020-10-11 18:36:54,801 INFO L130 PetriNetUnfolder]: For 662/699 co-relation queries the response was YES. [2020-10-11 18:36:54,803 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1043 conditions, 378 events. 79/378 cut-off events. For 662/699 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2218 event pairs, 24 based on Foata normal form. 15/378 useless extension candidates. Maximal degree in co-relation 1001. Up to 114 conditions per place. [2020-10-11 18:36:54,804 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 10 selfloop transitions, 2 changer transitions 7/68 dead transitions. [2020-10-11 18:36:54,804 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 68 transitions, 317 flow [2020-10-11 18:36:54,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-11 18:36:54,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-11 18:36:54,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 466 transitions. [2020-10-11 18:36:54,806 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8442028985507246 [2020-10-11 18:36:54,806 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 466 transitions. [2020-10-11 18:36:54,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 466 transitions. [2020-10-11 18:36:54,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:36:54,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 466 transitions. [2020-10-11 18:36:54,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-10-11 18:36:54,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-10-11 18:36:54,810 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-10-11 18:36:54,810 INFO L185 Difference]: Start difference. First operand has 88 places, 62 transitions, 245 flow. Second operand 8 states and 466 transitions. [2020-10-11 18:36:54,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 68 transitions, 317 flow [2020-10-11 18:36:54,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 68 transitions, 305 flow, removed 5 selfloop flow, removed 4 redundant places. [2020-10-11 18:36:54,816 INFO L241 Difference]: Finished difference. Result has 93 places, 61 transitions, 244 flow [2020-10-11 18:36:54,817 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=244, PETRI_PLACES=93, PETRI_TRANSITIONS=61} [2020-10-11 18:36:54,817 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 29 predicate places. [2020-10-11 18:36:54,818 INFO L481 AbstractCegarLoop]: Abstraction has has 93 places, 61 transitions, 244 flow [2020-10-11 18:36:54,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:36:54,818 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:36:54,818 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, 1] [2020-10-11 18:36:54,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-11 18:36:54,818 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:36:54,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:36:54,819 INFO L82 PathProgramCache]: Analyzing trace with hash 424605702, now seen corresponding path program 4 times [2020-10-11 18:36:54,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:36:54,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653147059] [2020-10-11 18:36:54,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:36:54,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:36:54,932 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 18:36:54,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653147059] [2020-10-11 18:36:54,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:36:54,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:36:54,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385102433] [2020-10-11 18:36:54,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:36:54,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:36:54,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:36:54,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:36:55,175 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 69 [2020-10-11 18:36:55,176 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 61 transitions, 244 flow. Second operand 7 states. [2020-10-11 18:36:55,176 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:36:55,176 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 69 [2020-10-11 18:36:55,177 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:36:55,315 INFO L129 PetriNetUnfolder]: 65/403 cut-off events. [2020-10-11 18:36:55,315 INFO L130 PetriNetUnfolder]: For 614/649 co-relation queries the response was YES. [2020-10-11 18:36:55,317 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1031 conditions, 403 events. 65/403 cut-off events. For 614/649 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2700 event pairs, 23 based on Foata normal form. 9/402 useless extension candidates. Maximal degree in co-relation 989. Up to 113 conditions per place. [2020-10-11 18:36:55,318 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 9 selfloop transitions, 2 changer transitions 6/67 dead transitions. [2020-10-11 18:36:55,319 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 67 transitions, 318 flow [2020-10-11 18:36:55,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-11 18:36:55,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-11 18:36:55,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 466 transitions. [2020-10-11 18:36:55,321 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8442028985507246 [2020-10-11 18:36:55,321 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 466 transitions. [2020-10-11 18:36:55,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 466 transitions. [2020-10-11 18:36:55,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:36:55,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 466 transitions. [2020-10-11 18:36:55,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-10-11 18:36:55,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-10-11 18:36:55,324 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-10-11 18:36:55,325 INFO L185 Difference]: Start difference. First operand has 93 places, 61 transitions, 244 flow. Second operand 8 states and 466 transitions. [2020-10-11 18:36:55,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 67 transitions, 318 flow [2020-10-11 18:36:55,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 67 transitions, 298 flow, removed 7 selfloop flow, removed 6 redundant places. [2020-10-11 18:36:55,329 INFO L241 Difference]: Finished difference. Result has 94 places, 61 transitions, 248 flow [2020-10-11 18:36:55,329 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=248, PETRI_PLACES=94, PETRI_TRANSITIONS=61} [2020-10-11 18:36:55,329 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 30 predicate places. [2020-10-11 18:36:55,329 INFO L481 AbstractCegarLoop]: Abstraction has has 94 places, 61 transitions, 248 flow [2020-10-11 18:36:55,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:36:55,330 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:36:55,330 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, 1] [2020-10-11 18:36:55,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-11 18:36:55,330 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:36:55,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:36:55,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1642325322, now seen corresponding path program 5 times [2020-10-11 18:36:55,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:36:55,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009045387] [2020-10-11 18:36:55,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:36:55,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:36:55,479 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 18:36:55,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009045387] [2020-10-11 18:36:55,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:36:55,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-11 18:36:55,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052773989] [2020-10-11 18:36:55,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-11 18:36:55,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:36:55,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-11 18:36:55,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-11 18:36:55,555 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 69 [2020-10-11 18:36:55,556 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 61 transitions, 248 flow. Second operand 8 states. [2020-10-11 18:36:55,556 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:36:55,556 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 69 [2020-10-11 18:36:55,556 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:36:55,716 INFO L129 PetriNetUnfolder]: 33/203 cut-off events. [2020-10-11 18:36:55,716 INFO L130 PetriNetUnfolder]: For 354/427 co-relation queries the response was YES. [2020-10-11 18:36:55,717 INFO L80 FinitePrefix]: Finished finitePrefix Result has 610 conditions, 203 events. 33/203 cut-off events. For 354/427 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1044 event pairs, 0 based on Foata normal form. 40/239 useless extension candidates. Maximal degree in co-relation 588. Up to 64 conditions per place. [2020-10-11 18:36:55,718 INFO L132 encePairwiseOnDemand]: 60/69 looper letters, 0 selfloop transitions, 0 changer transitions 66/66 dead transitions. [2020-10-11 18:36:55,718 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 66 transitions, 331 flow [2020-10-11 18:36:55,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 18:36:55,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-11 18:36:55,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 644 transitions. [2020-10-11 18:36:55,723 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8484848484848485 [2020-10-11 18:36:55,723 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 644 transitions. [2020-10-11 18:36:55,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 644 transitions. [2020-10-11 18:36:55,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:36:55,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 644 transitions. [2020-10-11 18:36:55,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 12 states. [2020-10-11 18:36:55,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 12 states. [2020-10-11 18:36:55,730 INFO L81 ComplementDD]: Finished complementDD. Result 12 states. [2020-10-11 18:36:55,730 INFO L185 Difference]: Start difference. First operand has 94 places, 61 transitions, 248 flow. Second operand 11 states and 644 transitions. [2020-10-11 18:36:55,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 66 transitions, 331 flow [2020-10-11 18:36:55,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 66 transitions, 301 flow, removed 9 selfloop flow, removed 9 redundant places. [2020-10-11 18:36:55,733 INFO L241 Difference]: Finished difference. Result has 84 places, 0 transitions, 0 flow [2020-10-11 18:36:55,733 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=84, PETRI_TRANSITIONS=0} [2020-10-11 18:36:55,733 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 20 predicate places. [2020-10-11 18:36:55,733 INFO L481 AbstractCegarLoop]: Abstraction has has 84 places, 0 transitions, 0 flow [2020-10-11 18:36:55,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-11 18:36:55,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-11 18:36:55,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 06:36:55 BasicIcfg [2020-10-11 18:36:55,739 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 18:36:55,742 INFO L168 Benchmark]: Toolchain (without parser) took 7961.24 ms. Allocated memory was 251.7 MB in the beginning and 460.3 MB in the end (delta: 208.7 MB). Free memory was 203.6 MB in the beginning and 336.2 MB in the end (delta: -132.6 MB). Peak memory consumption was 76.1 MB. Max. memory is 14.2 GB. [2020-10-11 18:36:55,743 INFO L168 Benchmark]: CDTParser took 0.48 ms. Allocated memory is still 251.7 MB. Free memory was 227.2 MB in the beginning and 226.4 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. [2020-10-11 18:36:55,744 INFO L168 Benchmark]: CACSL2BoogieTranslator took 907.20 ms. Allocated memory was 251.7 MB in the beginning and 317.7 MB in the end (delta: 66.1 MB). Free memory was 203.6 MB in the beginning and 268.7 MB in the end (delta: -65.0 MB). Peak memory consumption was 27.1 MB. Max. memory is 14.2 GB. [2020-10-11 18:36:55,747 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.84 ms. Allocated memory is still 317.7 MB. Free memory was 268.7 MB in the beginning and 267.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-11 18:36:55,750 INFO L168 Benchmark]: Boogie Preprocessor took 25.82 ms. Allocated memory is still 317.7 MB. Free memory was 267.0 MB in the beginning and 265.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-11 18:36:55,752 INFO L168 Benchmark]: RCFGBuilder took 419.81 ms. Allocated memory is still 317.7 MB. Free memory was 265.3 MB in the beginning and 242.2 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 14.2 GB. [2020-10-11 18:36:55,756 INFO L168 Benchmark]: TraceAbstraction took 6556.62 ms. Allocated memory was 317.7 MB in the beginning and 460.3 MB in the end (delta: 142.6 MB). Free memory was 242.2 MB in the beginning and 336.2 MB in the end (delta: -94.0 MB). Peak memory consumption was 48.6 MB. Max. memory is 14.2 GB. [2020-10-11 18:36:55,767 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48 ms. Allocated memory is still 251.7 MB. Free memory was 227.2 MB in the beginning and 226.4 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 907.20 ms. Allocated memory was 251.7 MB in the beginning and 317.7 MB in the end (delta: 66.1 MB). Free memory was 203.6 MB in the beginning and 268.7 MB in the end (delta: -65.0 MB). Peak memory consumption was 27.1 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 45.84 ms. Allocated memory is still 317.7 MB. Free memory was 268.7 MB in the beginning and 267.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 25.82 ms. Allocated memory is still 317.7 MB. Free memory was 267.0 MB in the beginning and 265.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * RCFGBuilder took 419.81 ms. Allocated memory is still 317.7 MB. Free memory was 265.3 MB in the beginning and 242.2 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 14.2 GB. * TraceAbstraction took 6556.62 ms. Allocated memory was 317.7 MB in the beginning and 460.3 MB in the end (delta: 142.6 MB). Free memory was 242.2 MB in the beginning and 336.2 MB in the end (delta: -94.0 MB). Peak memory consumption was 48.6 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, 68 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 6.4s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 320 SDtfs, 334 SDslu, 911 SDs, 0 SdLazy, 833 SolverSat, 116 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 138 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=282occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 501 NumberOfCodeBlocks, 501 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 489 ConstructedInterpolants, 0 QuantifiedInterpolants, 55407 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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...