/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe-SemanticLooper.epf -i ../../../trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 05:57:47,507 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 05:57:47,511 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 05:57:47,551 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 05:57:47,551 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 05:57:47,558 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 05:57:47,561 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 05:57:47,565 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 05:57:47,567 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 05:57:47,571 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 05:57:47,572 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 05:57:47,573 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 05:57:47,573 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 05:57:47,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 05:57:47,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 05:57:47,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 05:57:47,581 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 05:57:47,582 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 05:57:47,583 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 05:57:47,591 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 05:57:47,593 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 05:57:47,594 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 05:57:47,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 05:57:47,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 05:57:47,609 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 05:57:47,612 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 05:57:47,613 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 05:57:47,616 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 05:57:47,617 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 05:57:47,617 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 05:57:47,618 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 05:57:47,622 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 05:57:47,622 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 05:57:47,622 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 05:57:47,623 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 05:57:47,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 05:57:47,625 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe-SemanticLooper.epf [2020-10-16 05:57:47,652 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 05:57:47,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 05:57:47,653 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 05:57:47,653 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 05:57:47,654 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 05:57:47,654 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 05:57:47,654 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 05:57:47,654 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 05:57:47,655 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 05:57:47,655 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 05:57:47,655 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 05:57:47,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 05:57:47,656 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 05:57:47,656 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 05:57:47,656 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 05:57:47,656 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 05:57:47,656 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 05:57:47,657 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 05:57:47,657 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 05:57:47,657 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 05:57:47,657 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 05:57:47,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 05:57:47,658 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 05:57:47,658 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 05:57:47,658 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 05:57:47,658 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 05:57:47,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 05:57:47,659 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 05:57:47,659 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 05:57:47,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 05:57:47,995 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 05:57:47,999 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 05:57:48,001 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 05:57:48,001 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 05:57:48,002 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-1.i [2020-10-16 05:57:48,073 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ae07d856/e2bb33bd71ca4f2d8fd009358f3db599/FLAGef13d960b [2020-10-16 05:57:48,635 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 05:57:48,636 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-1.i [2020-10-16 05:57:48,661 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ae07d856/e2bb33bd71ca4f2d8fd009358f3db599/FLAGef13d960b [2020-10-16 05:57:48,971 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ae07d856/e2bb33bd71ca4f2d8fd009358f3db599 [2020-10-16 05:57:48,980 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 05:57:48,982 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 05:57:48,983 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 05:57:48,983 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 05:57:48,987 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 05:57:48,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:57:48" (1/1) ... [2020-10-16 05:57:48,992 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39059b31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:57:48, skipping insertion in model container [2020-10-16 05:57:48,992 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:57:48" (1/1) ... [2020-10-16 05:57:49,001 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 05:57:49,073 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 05:57:49,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:57:49,630 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 05:57:49,711 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:57:49,799 INFO L208 MainTranslator]: Completed translation [2020-10-16 05:57:49,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:57:49 WrapperNode [2020-10-16 05:57:49,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 05:57:49,803 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 05:57:49,803 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 05:57:49,803 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 05:57:49,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:57:49" (1/1) ... [2020-10-16 05:57:49,829 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:57:49" (1/1) ... [2020-10-16 05:57:49,853 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 05:57:49,854 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 05:57:49,854 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 05:57:49,854 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 05:57:49,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:57:49" (1/1) ... [2020-10-16 05:57:49,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:57:49" (1/1) ... [2020-10-16 05:57:49,867 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:57:49" (1/1) ... [2020-10-16 05:57:49,867 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:57:49" (1/1) ... [2020-10-16 05:57:49,873 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:57:49" (1/1) ... [2020-10-16 05:57:49,878 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:57:49" (1/1) ... [2020-10-16 05:57:49,880 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:57:49" (1/1) ... [2020-10-16 05:57:49,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 05:57:49,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 05:57:49,884 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 05:57:49,884 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 05:57:49,885 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:57:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 05:57:49,969 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-16 05:57:49,969 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-16 05:57:49,969 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-16 05:57:49,970 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-16 05:57:49,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 05:57:49,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 05:57:49,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 05:57:49,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 05:57:49,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 05:57:49,979 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 05:57:50,319 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 05:57:50,319 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-16 05:57:50,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:57:50 BoogieIcfgContainer [2020-10-16 05:57:50,322 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 05:57:50,323 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 05:57:50,323 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 05:57:50,327 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 05:57:50,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:57:48" (1/3) ... [2020-10-16 05:57:50,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66458fa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:57:50, skipping insertion in model container [2020-10-16 05:57:50,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:57:49" (2/3) ... [2020-10-16 05:57:50,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66458fa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:57:50, skipping insertion in model container [2020-10-16 05:57:50,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:57:50" (3/3) ... [2020-10-16 05:57:50,332 INFO L111 eAbstractionObserver]: Analyzing ICFG nondet-loop-bound-1.i [2020-10-16 05:57:50,346 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 05:57:50,355 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 05:57:50,356 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 05:57:50,387 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:50,387 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:50,387 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:50,388 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:50,388 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:50,388 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:50,389 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:50,390 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:50,390 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:50,390 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:50,390 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:50,391 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:50,391 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:50,391 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:50,392 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:50,392 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:50,392 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:50,396 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:50,397 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:50,397 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:50,397 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:50,397 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:50,406 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:50,407 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:50,407 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:50,407 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:50,407 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:50,408 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:50,428 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 05:57:50,463 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 05:57:50,463 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 05:57:50,463 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 05:57:50,464 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 05:57:50,464 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 05:57:50,464 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 05:57:50,464 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 05:57:50,464 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 05:57:50,480 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 58 transitions, 126 flow [2020-10-16 05:57:50,556 INFO L129 PetriNetUnfolder]: 4/68 cut-off events. [2020-10-16 05:57:50,557 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:57:50,570 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 68 events. 4/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 84 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 48. Up to 4 conditions per place. [2020-10-16 05:57:50,570 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 58 transitions, 126 flow [2020-10-16 05:57:50,583 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 57 transitions, 122 flow [2020-10-16 05:57:50,586 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 05:57:50,588 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 57 transitions, 122 flow [2020-10-16 05:57:50,591 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 60 places, 57 transitions, 122 flow [2020-10-16 05:57:50,592 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 60 places, 57 transitions, 122 flow [2020-10-16 05:57:50,613 INFO L129 PetriNetUnfolder]: 4/68 cut-off events. [2020-10-16 05:57:50,614 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:57:50,615 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 68 events. 4/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 82 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 48. Up to 4 conditions per place. [2020-10-16 05:57:50,617 INFO L117 LiptonReduction]: Number of co-enabled transitions 592 [2020-10-16 05:57:52,118 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-10-16 05:57:52,348 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2020-10-16 05:57:52,429 INFO L132 LiptonReduction]: Checked pairs total: 576 [2020-10-16 05:57:52,429 INFO L134 LiptonReduction]: Total number of compositions: 54 [2020-10-16 05:57:52,433 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1849 [2020-10-16 05:57:52,439 INFO L129 PetriNetUnfolder]: 0/3 cut-off events. [2020-10-16 05:57:52,440 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:57:52,440 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:57:52,441 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2020-10-16 05:57:52,441 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:57:52,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:57:52,448 INFO L82 PathProgramCache]: Analyzing trace with hash 229684, now seen corresponding path program 1 times [2020-10-16 05:57:52,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:57:52,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439167387] [2020-10-16 05:57:52,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:57:52,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:57:52,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:57:52,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439167387] [2020-10-16 05:57:52,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:57:52,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:57:52,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282047293] [2020-10-16 05:57:52,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:57:52,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:57:52,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:57:52,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:57:52,702 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 112 [2020-10-16 05:57:52,704 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 11 transitions, 30 flow. Second operand 3 states. [2020-10-16 05:57:52,705 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:57:52,705 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 112 [2020-10-16 05:57:52,707 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:57:52,754 INFO L129 PetriNetUnfolder]: 13/37 cut-off events. [2020-10-16 05:57:52,754 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:57:52,755 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 37 events. 13/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 103 event pairs, 4 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 69. Up to 19 conditions per place. [2020-10-16 05:57:52,757 INFO L132 encePairwiseOnDemand]: 109/112 looper letters, 7 selfloop transitions, 2 changer transitions 0/14 dead transitions. [2020-10-16 05:57:52,757 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 14 transitions, 54 flow [2020-10-16 05:57:52,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:57:52,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:57:52,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 208 transitions. [2020-10-16 05:57:52,776 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2020-10-16 05:57:52,777 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 208 transitions. [2020-10-16 05:57:52,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 208 transitions. [2020-10-16 05:57:52,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:57:52,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 208 transitions. [2020-10-16 05:57:52,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:57:52,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:57:52,795 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:57:52,798 INFO L185 Difference]: Start difference. First operand has 17 places, 11 transitions, 30 flow. Second operand 3 states and 208 transitions. [2020-10-16 05:57:52,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 14 transitions, 54 flow [2020-10-16 05:57:52,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 14 transitions, 53 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 05:57:52,806 INFO L241 Difference]: Finished difference. Result has 19 places, 11 transitions, 37 flow [2020-10-16 05:57:52,809 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=29, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=37, PETRI_PLACES=19, PETRI_TRANSITIONS=11} [2020-10-16 05:57:52,826 INFO L342 CegarLoopForPetriNet]: 17 programPoint places, 2 predicate places. [2020-10-16 05:57:52,826 INFO L481 AbstractCegarLoop]: Abstraction has has 19 places, 11 transitions, 37 flow [2020-10-16 05:57:52,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:57:52,827 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:57:52,827 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:57:52,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 05:57:52,828 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:57:52,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:57:52,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1647647298, now seen corresponding path program 1 times [2020-10-16 05:57:52,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:57:52,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369932616] [2020-10-16 05:57:52,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:57:52,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:57:52,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:57:52,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369932616] [2020-10-16 05:57:52,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:57:52,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:57:52,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492927740] [2020-10-16 05:57:52,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:57:52,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:57:52,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:57:52,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:57:52,925 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 112 [2020-10-16 05:57:52,925 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 11 transitions, 37 flow. Second operand 4 states. [2020-10-16 05:57:52,926 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:57:52,926 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 112 [2020-10-16 05:57:52,926 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:57:52,972 INFO L129 PetriNetUnfolder]: 11/32 cut-off events. [2020-10-16 05:57:52,972 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2020-10-16 05:57:52,973 INFO L80 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 32 events. 11/32 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 85 event pairs, 4 based on Foata normal form. 3/27 useless extension candidates. Maximal degree in co-relation 71. Up to 14 conditions per place. [2020-10-16 05:57:52,973 INFO L132 encePairwiseOnDemand]: 109/112 looper letters, 4 selfloop transitions, 2 changer transitions 2/13 dead transitions. [2020-10-16 05:57:52,974 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 13 transitions, 55 flow [2020-10-16 05:57:52,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:57:52,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:57:52,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 273 transitions. [2020-10-16 05:57:52,982 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.609375 [2020-10-16 05:57:52,982 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 273 transitions. [2020-10-16 05:57:52,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 273 transitions. [2020-10-16 05:57:52,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:57:52,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 273 transitions. [2020-10-16 05:57:52,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:57:52,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:57:52,987 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:57:52,987 INFO L185 Difference]: Start difference. First operand has 19 places, 11 transitions, 37 flow. Second operand 4 states and 273 transitions. [2020-10-16 05:57:52,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 13 transitions, 55 flow [2020-10-16 05:57:52,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 13 transitions, 49 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 05:57:52,989 INFO L241 Difference]: Finished difference. Result has 18 places, 9 transitions, 29 flow [2020-10-16 05:57:52,989 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=27, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=29, PETRI_PLACES=18, PETRI_TRANSITIONS=9} [2020-10-16 05:57:52,990 INFO L342 CegarLoopForPetriNet]: 17 programPoint places, 1 predicate places. [2020-10-16 05:57:52,990 INFO L481 AbstractCegarLoop]: Abstraction has has 18 places, 9 transitions, 29 flow [2020-10-16 05:57:52,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:57:52,991 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:57:52,991 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-16 05:57:52,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 05:57:52,991 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:57:52,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:57:52,992 INFO L82 PathProgramCache]: Analyzing trace with hash -462538936, now seen corresponding path program 1 times [2020-10-16 05:57:52,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:57:52,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271757455] [2020-10-16 05:57:52,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:57:53,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 05:57:53,018 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 05:57:53,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 05:57:53,034 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 05:57:53,062 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 05:57:53,063 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 05:57:53,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 05:57:53,064 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 05:57:53,065 WARN L371 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 05:57:53,066 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-16 05:57:53,075 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,076 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,076 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,076 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,076 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,076 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,077 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,077 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,077 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,077 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,077 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,078 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,078 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,078 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,079 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,079 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,079 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,079 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,080 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,080 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,080 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,080 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,081 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,081 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,081 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,082 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,082 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,082 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,082 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,082 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,083 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,083 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,083 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,083 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,084 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,084 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,084 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,085 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,085 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,088 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,089 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,089 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,089 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,090 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,091 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,092 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,092 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,092 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,092 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,092 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,094 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,094 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,095 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,095 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,095 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,095 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,097 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-16 05:57:53,097 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 05:57:53,097 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 05:57:53,097 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 05:57:53,097 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 05:57:53,098 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 05:57:53,098 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 05:57:53,098 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 05:57:53,098 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 05:57:53,101 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 80 places, 74 transitions, 172 flow [2020-10-16 05:57:53,118 INFO L129 PetriNetUnfolder]: 5/89 cut-off events. [2020-10-16 05:57:53,118 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 05:57:53,119 INFO L80 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 89 events. 5/89 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 120 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 98. Up to 6 conditions per place. [2020-10-16 05:57:53,120 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 74 transitions, 172 flow [2020-10-16 05:57:53,121 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 63 transitions, 141 flow [2020-10-16 05:57:53,121 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 05:57:53,121 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 63 transitions, 141 flow [2020-10-16 05:57:53,121 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 63 transitions, 141 flow [2020-10-16 05:57:53,122 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 68 places, 63 transitions, 141 flow [2020-10-16 05:57:53,137 INFO L129 PetriNetUnfolder]: 5/89 cut-off events. [2020-10-16 05:57:53,137 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 05:57:53,141 INFO L80 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 89 events. 5/89 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 132 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 72. Up to 6 conditions per place. [2020-10-16 05:57:53,144 INFO L117 LiptonReduction]: Number of co-enabled transitions 920 [2020-10-16 05:57:54,446 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 77 [2020-10-16 05:57:54,616 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-10-16 05:57:54,807 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-10-16 05:57:54,901 INFO L132 LiptonReduction]: Checked pairs total: 1184 [2020-10-16 05:57:54,901 INFO L134 LiptonReduction]: Total number of compositions: 57 [2020-10-16 05:57:54,901 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1780 [2020-10-16 05:57:54,903 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2020-10-16 05:57:54,904 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:57:54,904 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:57:54,904 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2020-10-16 05:57:54,904 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:57:54,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:57:54,905 INFO L82 PathProgramCache]: Analyzing trace with hash 375535, now seen corresponding path program 1 times [2020-10-16 05:57:54,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:57:54,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802954327] [2020-10-16 05:57:54,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:57:54,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:57:54,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:57:54,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802954327] [2020-10-16 05:57:54,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:57:54,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:57:54,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735554979] [2020-10-16 05:57:54,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:57:54,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:57:54,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:57:54,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:57:54,983 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 131 [2020-10-16 05:57:54,984 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 16 transitions, 47 flow. Second operand 3 states. [2020-10-16 05:57:54,984 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:57:54,984 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 131 [2020-10-16 05:57:54,984 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:57:55,044 INFO L129 PetriNetUnfolder]: 122/218 cut-off events. [2020-10-16 05:57:55,045 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 05:57:55,046 INFO L80 FinitePrefix]: Finished finitePrefix Result has 441 conditions, 218 events. 122/218 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1010 event pairs, 42 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 431. Up to 135 conditions per place. [2020-10-16 05:57:55,048 INFO L132 encePairwiseOnDemand]: 127/131 looper letters, 13 selfloop transitions, 3 changer transitions 0/23 dead transitions. [2020-10-16 05:57:55,048 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 23 transitions, 93 flow [2020-10-16 05:57:55,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:57:55,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:57:55,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 263 transitions. [2020-10-16 05:57:55,051 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6692111959287532 [2020-10-16 05:57:55,052 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 263 transitions. [2020-10-16 05:57:55,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 263 transitions. [2020-10-16 05:57:55,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:57:55,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 263 transitions. [2020-10-16 05:57:55,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:57:55,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:57:55,055 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:57:55,055 INFO L185 Difference]: Start difference. First operand has 24 places, 16 transitions, 47 flow. Second operand 3 states and 263 transitions. [2020-10-16 05:57:55,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 23 transitions, 93 flow [2020-10-16 05:57:55,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 23 transitions, 90 flow, removed 1 selfloop flow, removed 1 redundant places. [2020-10-16 05:57:55,057 INFO L241 Difference]: Finished difference. Result has 26 places, 18 transitions, 63 flow [2020-10-16 05:57:55,057 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=63, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2020-10-16 05:57:55,058 INFO L342 CegarLoopForPetriNet]: 24 programPoint places, 2 predicate places. [2020-10-16 05:57:55,058 INFO L481 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 63 flow [2020-10-16 05:57:55,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:57:55,058 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:57:55,058 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:57:55,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 05:57:55,059 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:57:55,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:57:55,059 INFO L82 PathProgramCache]: Analyzing trace with hash 243832858, now seen corresponding path program 1 times [2020-10-16 05:57:55,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:57:55,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209584453] [2020-10-16 05:57:55,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:57:55,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:57:55,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:57:55,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209584453] [2020-10-16 05:57:55,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:57:55,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:57:55,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706784804] [2020-10-16 05:57:55,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:57:55,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:57:55,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:57:55,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:57:55,169 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 131 [2020-10-16 05:57:55,169 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 18 transitions, 63 flow. Second operand 5 states. [2020-10-16 05:57:55,170 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:57:55,170 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 131 [2020-10-16 05:57:55,172 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:57:55,313 INFO L129 PetriNetUnfolder]: 126/248 cut-off events. [2020-10-16 05:57:55,314 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2020-10-16 05:57:55,315 INFO L80 FinitePrefix]: Finished finitePrefix Result has 598 conditions, 248 events. 126/248 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 1263 event pairs, 20 based on Foata normal form. 11/218 useless extension candidates. Maximal degree in co-relation 586. Up to 68 conditions per place. [2020-10-16 05:57:55,317 INFO L132 encePairwiseOnDemand]: 126/131 looper letters, 23 selfloop transitions, 7 changer transitions 0/36 dead transitions. [2020-10-16 05:57:55,317 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 36 transitions, 166 flow [2020-10-16 05:57:55,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:57:55,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:57:55,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 505 transitions. [2020-10-16 05:57:55,321 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6424936386768448 [2020-10-16 05:57:55,321 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 505 transitions. [2020-10-16 05:57:55,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 505 transitions. [2020-10-16 05:57:55,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:57:55,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 505 transitions. [2020-10-16 05:57:55,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:57:55,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:57:55,326 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:57:55,326 INFO L185 Difference]: Start difference. First operand has 26 places, 18 transitions, 63 flow. Second operand 6 states and 505 transitions. [2020-10-16 05:57:55,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 36 transitions, 166 flow [2020-10-16 05:57:55,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 36 transitions, 162 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 05:57:55,329 INFO L241 Difference]: Finished difference. Result has 33 places, 21 transitions, 99 flow [2020-10-16 05:57:55,330 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=99, PETRI_PLACES=33, PETRI_TRANSITIONS=21} [2020-10-16 05:57:55,330 INFO L342 CegarLoopForPetriNet]: 24 programPoint places, 9 predicate places. [2020-10-16 05:57:55,330 INFO L481 AbstractCegarLoop]: Abstraction has has 33 places, 21 transitions, 99 flow [2020-10-16 05:57:55,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:57:55,330 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:57:55,331 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:57:55,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 05:57:55,331 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:57:55,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:57:55,332 INFO L82 PathProgramCache]: Analyzing trace with hash -88525361, now seen corresponding path program 1 times [2020-10-16 05:57:55,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:57:55,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346323305] [2020-10-16 05:57:55,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:57:55,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:57:55,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 05:57:55,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346323305] [2020-10-16 05:57:55,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:57:55,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:57:55,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525253744] [2020-10-16 05:57:55,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:57:55,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:57:55,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:57:55,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:57:55,401 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 131 [2020-10-16 05:57:55,401 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 21 transitions, 99 flow. Second operand 5 states. [2020-10-16 05:57:55,401 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:57:55,401 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 131 [2020-10-16 05:57:55,402 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:57:55,520 INFO L129 PetriNetUnfolder]: 126/255 cut-off events. [2020-10-16 05:57:55,520 INFO L130 PetriNetUnfolder]: For 195/195 co-relation queries the response was YES. [2020-10-16 05:57:55,521 INFO L80 FinitePrefix]: Finished finitePrefix Result has 716 conditions, 255 events. 126/255 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 1283 event pairs, 23 based on Foata normal form. 12/224 useless extension candidates. Maximal degree in co-relation 700. Up to 61 conditions per place. [2020-10-16 05:57:55,523 INFO L132 encePairwiseOnDemand]: 126/131 looper letters, 24 selfloop transitions, 9 changer transitions 0/39 dead transitions. [2020-10-16 05:57:55,523 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 39 transitions, 224 flow [2020-10-16 05:57:55,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:57:55,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:57:55,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 506 transitions. [2020-10-16 05:57:55,527 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6437659033078881 [2020-10-16 05:57:55,527 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 506 transitions. [2020-10-16 05:57:55,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 506 transitions. [2020-10-16 05:57:55,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:57:55,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 506 transitions. [2020-10-16 05:57:55,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:57:55,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:57:55,531 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:57:55,531 INFO L185 Difference]: Start difference. First operand has 33 places, 21 transitions, 99 flow. Second operand 6 states and 506 transitions. [2020-10-16 05:57:55,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 39 transitions, 224 flow [2020-10-16 05:57:55,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 39 transitions, 213 flow, removed 2 selfloop flow, removed 2 redundant places. [2020-10-16 05:57:55,536 INFO L241 Difference]: Finished difference. Result has 39 places, 24 transitions, 141 flow [2020-10-16 05:57:55,536 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=141, PETRI_PLACES=39, PETRI_TRANSITIONS=24} [2020-10-16 05:57:55,537 INFO L342 CegarLoopForPetriNet]: 24 programPoint places, 15 predicate places. [2020-10-16 05:57:55,537 INFO L481 AbstractCegarLoop]: Abstraction has has 39 places, 24 transitions, 141 flow [2020-10-16 05:57:55,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:57:55,537 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:57:55,537 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-10-16 05:57:55,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 05:57:55,538 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:57:55,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:57:55,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1548222349, now seen corresponding path program 1 times [2020-10-16 05:57:55,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:57:55,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799232631] [2020-10-16 05:57:55,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:57:55,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 05:57:55,557 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 05:57:55,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 05:57:55,570 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 05:57:55,589 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 05:57:55,589 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 05:57:55,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 05:57:55,590 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 05:57:55,591 WARN L371 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 05:57:55,594 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-16 05:57:55,607 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,607 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,607 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,607 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,608 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,608 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,608 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,608 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,608 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,609 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,609 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,609 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,609 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,609 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,610 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,610 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,610 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,610 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,610 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,610 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,611 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,612 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,613 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,613 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,613 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,613 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,613 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,614 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,614 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,614 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,614 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,616 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,617 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,617 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,617 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,617 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,617 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,618 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,618 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,618 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,618 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,620 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,620 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,620 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,621 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,621 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,621 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,621 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,621 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,621 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,622 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,622 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,623 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,623 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,623 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,623 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,627 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,628 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,628 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,628 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,628 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,630 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,631 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,631 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,631 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,631 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,633 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,633 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,633 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,634 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,634 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,634 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,636 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,637 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,637 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,637 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,637 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,637 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,648 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,648 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,648 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,649 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,649 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,649 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,651 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-16 05:57:55,651 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 05:57:55,651 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 05:57:55,651 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 05:57:55,652 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 05:57:55,652 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 05:57:55,652 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 05:57:55,652 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 05:57:55,652 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 05:57:55,658 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 90 transitions, 222 flow [2020-10-16 05:57:55,679 INFO L129 PetriNetUnfolder]: 6/110 cut-off events. [2020-10-16 05:57:55,680 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 05:57:55,681 INFO L80 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 110 events. 6/110 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 163 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 124. Up to 8 conditions per place. [2020-10-16 05:57:55,682 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 90 transitions, 222 flow [2020-10-16 05:57:55,683 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 69 transitions, 162 flow [2020-10-16 05:57:55,683 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 05:57:55,683 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 69 transitions, 162 flow [2020-10-16 05:57:55,683 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 69 transitions, 162 flow [2020-10-16 05:57:55,684 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 69 transitions, 162 flow [2020-10-16 05:57:55,698 INFO L129 PetriNetUnfolder]: 6/110 cut-off events. [2020-10-16 05:57:55,698 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 05:57:55,699 INFO L80 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 110 events. 6/110 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 169 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 98. Up to 8 conditions per place. [2020-10-16 05:57:55,701 INFO L117 LiptonReduction]: Number of co-enabled transitions 1308 [2020-10-16 05:57:56,718 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-10-16 05:57:57,008 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-16 05:57:57,043 INFO L132 LiptonReduction]: Checked pairs total: 1815 [2020-10-16 05:57:57,043 INFO L134 LiptonReduction]: Total number of compositions: 57 [2020-10-16 05:57:57,043 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1360 [2020-10-16 05:57:57,045 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2020-10-16 05:57:57,046 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:57:57,046 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:57:57,046 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2020-10-16 05:57:57,046 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:57:57,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:57:57,047 INFO L82 PathProgramCache]: Analyzing trace with hash 537369, now seen corresponding path program 1 times [2020-10-16 05:57:57,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:57:57,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279781756] [2020-10-16 05:57:57,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:57:57,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:57:57,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:57:57,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279781756] [2020-10-16 05:57:57,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:57:57,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:57:57,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904571253] [2020-10-16 05:57:57,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:57:57,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:57:57,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:57:57,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:57:57,088 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 147 [2020-10-16 05:57:57,088 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 19 transitions, 62 flow. Second operand 3 states. [2020-10-16 05:57:57,089 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:57:57,089 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 147 [2020-10-16 05:57:57,089 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:57:57,244 INFO L129 PetriNetUnfolder]: 582/877 cut-off events. [2020-10-16 05:57:57,245 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 05:57:57,248 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1762 conditions, 877 events. 582/877 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 4446 event pairs, 147 based on Foata normal form. 0/675 useless extension candidates. Maximal degree in co-relation 1751. Up to 675 conditions per place. [2020-10-16 05:57:57,254 INFO L132 encePairwiseOnDemand]: 142/147 looper letters, 16 selfloop transitions, 4 changer transitions 0/28 dead transitions. [2020-10-16 05:57:57,254 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 28 transitions, 120 flow [2020-10-16 05:57:57,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:57:57,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:57:57,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2020-10-16 05:57:57,257 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.673469387755102 [2020-10-16 05:57:57,258 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2020-10-16 05:57:57,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2020-10-16 05:57:57,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:57:57,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2020-10-16 05:57:57,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:57:57,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:57:57,262 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:57:57,262 INFO L185 Difference]: Start difference. First operand has 29 places, 19 transitions, 62 flow. Second operand 3 states and 297 transitions. [2020-10-16 05:57:57,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 28 transitions, 120 flow [2020-10-16 05:57:57,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 28 transitions, 113 flow, removed 3 selfloop flow, removed 1 redundant places. [2020-10-16 05:57:57,265 INFO L241 Difference]: Finished difference. Result has 31 places, 22 transitions, 81 flow [2020-10-16 05:57:57,266 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=31, PETRI_TRANSITIONS=22} [2020-10-16 05:57:57,266 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2020-10-16 05:57:57,266 INFO L481 AbstractCegarLoop]: Abstraction has has 31 places, 22 transitions, 81 flow [2020-10-16 05:57:57,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:57:57,267 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:57:57,267 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:57:57,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 05:57:57,268 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:57:57,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:57:57,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1157508092, now seen corresponding path program 1 times [2020-10-16 05:57:57,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:57:57,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624992317] [2020-10-16 05:57:57,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:57:57,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:57:57,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:57:57,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624992317] [2020-10-16 05:57:57,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:57:57,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:57:57,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238806962] [2020-10-16 05:57:57,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:57:57,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:57:57,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:57:57,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:57:57,379 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 147 [2020-10-16 05:57:57,380 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 22 transitions, 81 flow. Second operand 5 states. [2020-10-16 05:57:57,380 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:57:57,381 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 147 [2020-10-16 05:57:57,381 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:57:57,587 INFO L129 PetriNetUnfolder]: 740/1180 cut-off events. [2020-10-16 05:57:57,587 INFO L130 PetriNetUnfolder]: For 71/71 co-relation queries the response was YES. [2020-10-16 05:57:57,591 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2875 conditions, 1180 events. 740/1180 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 6973 event pairs, 109 based on Foata normal form. 35/1052 useless extension candidates. Maximal degree in co-relation 2862. Up to 449 conditions per place. [2020-10-16 05:57:57,598 INFO L132 encePairwiseOnDemand]: 141/147 looper letters, 34 selfloop transitions, 10 changer transitions 0/51 dead transitions. [2020-10-16 05:57:57,599 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 51 transitions, 245 flow [2020-10-16 05:57:57,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:57:57,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:57:57,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 585 transitions. [2020-10-16 05:57:57,602 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6632653061224489 [2020-10-16 05:57:57,602 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 585 transitions. [2020-10-16 05:57:57,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 585 transitions. [2020-10-16 05:57:57,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:57:57,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 585 transitions. [2020-10-16 05:57:57,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:57:57,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:57:57,606 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:57:57,607 INFO L185 Difference]: Start difference. First operand has 31 places, 22 transitions, 81 flow. Second operand 6 states and 585 transitions. [2020-10-16 05:57:57,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 51 transitions, 245 flow [2020-10-16 05:57:57,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 51 transitions, 239 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 05:57:57,610 INFO L241 Difference]: Finished difference. Result has 38 places, 28 transitions, 142 flow [2020-10-16 05:57:57,610 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=142, PETRI_PLACES=38, PETRI_TRANSITIONS=28} [2020-10-16 05:57:57,610 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2020-10-16 05:57:57,611 INFO L481 AbstractCegarLoop]: Abstraction has has 38 places, 28 transitions, 142 flow [2020-10-16 05:57:57,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:57:57,611 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:57:57,611 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:57:57,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 05:57:57,612 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:57:57,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:57:57,612 INFO L82 PathProgramCache]: Analyzing trace with hash -204391609, now seen corresponding path program 1 times [2020-10-16 05:57:57,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:57:57,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528312628] [2020-10-16 05:57:57,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:57:57,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:57:57,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 05:57:57,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528312628] [2020-10-16 05:57:57,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:57:57,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:57:57,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910561203] [2020-10-16 05:57:57,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:57:57,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:57:57,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:57:57,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:57:57,667 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 147 [2020-10-16 05:57:57,667 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 28 transitions, 142 flow. Second operand 5 states. [2020-10-16 05:57:57,667 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:57:57,668 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 147 [2020-10-16 05:57:57,668 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:57:57,917 INFO L129 PetriNetUnfolder]: 895/1501 cut-off events. [2020-10-16 05:57:57,918 INFO L130 PetriNetUnfolder]: For 985/985 co-relation queries the response was YES. [2020-10-16 05:57:57,923 INFO L80 FinitePrefix]: Finished finitePrefix Result has 4403 conditions, 1501 events. 895/1501 cut-off events. For 985/985 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 9894 event pairs, 147 based on Foata normal form. 47/1334 useless extension candidates. Maximal degree in co-relation 4386. Up to 588 conditions per place. [2020-10-16 05:57:57,933 INFO L132 encePairwiseOnDemand]: 141/147 looper letters, 40 selfloop transitions, 15 changer transitions 0/62 dead transitions. [2020-10-16 05:57:57,933 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 62 transitions, 395 flow [2020-10-16 05:57:57,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:57:57,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:57:57,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 586 transitions. [2020-10-16 05:57:57,936 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6643990929705216 [2020-10-16 05:57:57,937 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 586 transitions. [2020-10-16 05:57:57,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 586 transitions. [2020-10-16 05:57:57,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:57:57,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 586 transitions. [2020-10-16 05:57:57,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:57:57,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:57:57,941 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:57:57,941 INFO L185 Difference]: Start difference. First operand has 38 places, 28 transitions, 142 flow. Second operand 6 states and 586 transitions. [2020-10-16 05:57:57,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 62 transitions, 395 flow [2020-10-16 05:57:57,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 62 transitions, 374 flow, removed 4 selfloop flow, removed 2 redundant places. [2020-10-16 05:57:57,953 INFO L241 Difference]: Finished difference. Result has 44 places, 37 transitions, 244 flow [2020-10-16 05:57:57,954 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=244, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2020-10-16 05:57:57,954 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2020-10-16 05:57:57,954 INFO L481 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 244 flow [2020-10-16 05:57:57,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:57:57,954 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:57:57,955 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:57:57,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 05:57:57,955 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:57:57,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:57:57,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1864579528, now seen corresponding path program 1 times [2020-10-16 05:57:57,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:57:57,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815109509] [2020-10-16 05:57:57,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:57:57,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:57:58,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 05:57:58,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815109509] [2020-10-16 05:57:58,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692299810] [2020-10-16 05:57:58,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:57:58,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:57:58,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 05:57:58,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 05:57:58,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 05:57:58,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 05:57:58,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 05:57:58,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840569450] [2020-10-16 05:57:58,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 05:57:58,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:57:58,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 05:57:58,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-16 05:57:58,232 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 147 [2020-10-16 05:57:58,233 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 244 flow. Second operand 12 states. [2020-10-16 05:57:58,233 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:57:58,234 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 147 [2020-10-16 05:57:58,234 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:57:58,759 INFO L129 PetriNetUnfolder]: 908/1533 cut-off events. [2020-10-16 05:57:58,759 INFO L130 PetriNetUnfolder]: For 1821/1821 co-relation queries the response was YES. [2020-10-16 05:57:58,765 INFO L80 FinitePrefix]: Finished finitePrefix Result has 5231 conditions, 1533 events. 908/1533 cut-off events. For 1821/1821 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 10309 event pairs, 98 based on Foata normal form. 11/1325 useless extension candidates. Maximal degree in co-relation 5211. Up to 462 conditions per place. [2020-10-16 05:57:58,775 INFO L132 encePairwiseOnDemand]: 140/147 looper letters, 63 selfloop transitions, 29 changer transitions 0/98 dead transitions. [2020-10-16 05:57:58,775 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 98 transitions, 650 flow [2020-10-16 05:57:58,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:57:58,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:57:58,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1234 transitions. [2020-10-16 05:57:58,780 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6457352171637886 [2020-10-16 05:57:58,780 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1234 transitions. [2020-10-16 05:57:58,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1234 transitions. [2020-10-16 05:57:58,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:57:58,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1234 transitions. [2020-10-16 05:57:58,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:57:58,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:57:58,788 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:57:58,788 INFO L185 Difference]: Start difference. First operand has 44 places, 37 transitions, 244 flow. Second operand 13 states and 1234 transitions. [2020-10-16 05:57:58,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 98 transitions, 650 flow [2020-10-16 05:57:58,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 98 transitions, 634 flow, removed 6 selfloop flow, removed 1 redundant places. [2020-10-16 05:57:58,806 INFO L241 Difference]: Finished difference. Result has 58 places, 47 transitions, 388 flow [2020-10-16 05:57:58,806 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=388, PETRI_PLACES=58, PETRI_TRANSITIONS=47} [2020-10-16 05:57:58,807 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 29 predicate places. [2020-10-16 05:57:58,807 INFO L481 AbstractCegarLoop]: Abstraction has has 58 places, 47 transitions, 388 flow [2020-10-16 05:57:58,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 05:57:58,807 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:57:58,807 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:57:59,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-16 05:57:59,022 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:57:59,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:57:59,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1148161428, now seen corresponding path program 2 times [2020-10-16 05:57:59,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:57:59,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010687649] [2020-10-16 05:57:59,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:57:59,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:57:59,082 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 05:57:59,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010687649] [2020-10-16 05:57:59,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:57:59,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 05:57:59,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579657695] [2020-10-16 05:57:59,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 05:57:59,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:57:59,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 05:57:59,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 05:57:59,085 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 147 [2020-10-16 05:57:59,086 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 47 transitions, 388 flow. Second operand 7 states. [2020-10-16 05:57:59,086 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:57:59,086 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 147 [2020-10-16 05:57:59,086 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:57:59,536 INFO L129 PetriNetUnfolder]: 920/1573 cut-off events. [2020-10-16 05:57:59,536 INFO L130 PetriNetUnfolder]: For 3297/3297 co-relation queries the response was YES. [2020-10-16 05:57:59,547 INFO L80 FinitePrefix]: Finished finitePrefix Result has 5993 conditions, 1573 events. 920/1573 cut-off events. For 3297/3297 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 10789 event pairs, 101 based on Foata normal form. 11/1360 useless extension candidates. Maximal degree in co-relation 5969. Up to 392 conditions per place. [2020-10-16 05:57:59,563 INFO L132 encePairwiseOnDemand]: 140/147 looper letters, 64 selfloop transitions, 32 changer transitions 0/102 dead transitions. [2020-10-16 05:57:59,563 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 102 transitions, 773 flow [2020-10-16 05:57:59,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:57:59,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:57:59,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1234 transitions. [2020-10-16 05:57:59,569 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6457352171637886 [2020-10-16 05:57:59,569 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1234 transitions. [2020-10-16 05:57:59,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1234 transitions. [2020-10-16 05:57:59,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:57:59,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1234 transitions. [2020-10-16 05:57:59,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:57:59,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:57:59,579 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:57:59,579 INFO L185 Difference]: Start difference. First operand has 58 places, 47 transitions, 388 flow. Second operand 13 states and 1234 transitions. [2020-10-16 05:57:59,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 102 transitions, 773 flow [2020-10-16 05:57:59,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 102 transitions, 710 flow, removed 6 selfloop flow, removed 7 redundant places. [2020-10-16 05:57:59,626 INFO L241 Difference]: Finished difference. Result has 66 places, 52 transitions, 455 flow [2020-10-16 05:57:59,627 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=455, PETRI_PLACES=66, PETRI_TRANSITIONS=52} [2020-10-16 05:57:59,627 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 37 predicate places. [2020-10-16 05:57:59,627 INFO L481 AbstractCegarLoop]: Abstraction has has 66 places, 52 transitions, 455 flow [2020-10-16 05:57:59,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 05:57:59,627 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:57:59,627 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:57:59,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-16 05:57:59,628 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:57:59,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:57:59,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1717126990, now seen corresponding path program 1 times [2020-10-16 05:57:59,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:57:59,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309787133] [2020-10-16 05:57:59,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:57:59,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:57:59,684 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 05:57:59,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309787133] [2020-10-16 05:57:59,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:57:59,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:57:59,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144052077] [2020-10-16 05:57:59,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:57:59,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:57:59,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:57:59,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:57:59,687 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 147 [2020-10-16 05:57:59,688 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 52 transitions, 455 flow. Second operand 5 states. [2020-10-16 05:57:59,688 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:57:59,688 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 147 [2020-10-16 05:57:59,688 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:58:00,007 INFO L129 PetriNetUnfolder]: 1041/1845 cut-off events. [2020-10-16 05:58:00,008 INFO L130 PetriNetUnfolder]: For 5664/5670 co-relation queries the response was YES. [2020-10-16 05:58:00,019 INFO L80 FinitePrefix]: Finished finitePrefix Result has 7280 conditions, 1845 events. 1041/1845 cut-off events. For 5664/5670 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 13375 event pairs, 120 based on Foata normal form. 63/1634 useless extension candidates. Maximal degree in co-relation 7254. Up to 781 conditions per place. [2020-10-16 05:58:00,031 INFO L132 encePairwiseOnDemand]: 141/147 looper letters, 66 selfloop transitions, 30 changer transitions 0/103 dead transitions. [2020-10-16 05:58:00,031 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 103 transitions, 1059 flow [2020-10-16 05:58:00,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:58:00,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:58:00,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 580 transitions. [2020-10-16 05:58:00,035 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6575963718820862 [2020-10-16 05:58:00,035 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 580 transitions. [2020-10-16 05:58:00,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 580 transitions. [2020-10-16 05:58:00,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:58:00,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 580 transitions. [2020-10-16 05:58:00,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:58:00,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:58:00,039 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:58:00,039 INFO L185 Difference]: Start difference. First operand has 66 places, 52 transitions, 455 flow. Second operand 6 states and 580 transitions. [2020-10-16 05:58:00,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 103 transitions, 1059 flow [2020-10-16 05:58:00,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 103 transitions, 946 flow, removed 10 selfloop flow, removed 9 redundant places. [2020-10-16 05:58:00,085 INFO L241 Difference]: Finished difference. Result has 65 places, 73 transitions, 739 flow [2020-10-16 05:58:00,085 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=739, PETRI_PLACES=65, PETRI_TRANSITIONS=73} [2020-10-16 05:58:00,086 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 36 predicate places. [2020-10-16 05:58:00,086 INFO L481 AbstractCegarLoop]: Abstraction has has 65 places, 73 transitions, 739 flow [2020-10-16 05:58:00,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:58:00,086 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:58:00,086 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:58:00,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-16 05:58:00,087 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:58:00,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:58:00,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1694375059, now seen corresponding path program 1 times [2020-10-16 05:58:00,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:58:00,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448288056] [2020-10-16 05:58:00,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:58:00,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 05:58:00,099 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 05:58:00,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 05:58:00,109 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 05:58:00,115 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 05:58:00,116 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 05:58:00,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-16 05:58:00,116 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 05:58:00,117 WARN L371 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 05:58:00,117 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-10-16 05:58:00,136 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,136 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,137 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,137 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,137 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,137 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,137 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,137 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,138 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,138 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,138 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,138 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,138 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,138 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,138 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,139 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,139 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,139 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,139 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,139 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,139 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,139 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,140 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,140 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,140 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,140 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,140 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,140 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,141 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,141 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,141 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,141 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,141 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,141 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,142 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,142 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,142 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,142 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,142 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,142 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,143 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,143 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,143 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,143 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,143 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,143 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,143 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,144 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,144 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,144 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,144 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,144 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,144 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,145 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,145 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,145 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,145 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,145 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,145 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,146 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,146 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,146 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,146 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,146 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,146 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,146 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,147 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,147 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,147 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,147 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,148 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,148 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,148 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,149 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,150 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,150 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,150 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,150 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,152 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,152 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,152 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,152 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,152 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,154 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,154 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,154 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,154 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,155 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,157 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,157 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,157 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,158 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,158 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,158 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,160 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,160 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,160 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,161 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,161 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,161 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,163 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,163 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,163 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,164 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,164 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,164 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,166 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,166 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,166 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,167 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,167 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,167 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:58:00,169 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-16 05:58:00,169 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 05:58:00,169 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 05:58:00,170 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 05:58:00,170 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 05:58:00,170 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 05:58:00,170 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 05:58:00,170 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 05:58:00,170 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 05:58:00,172 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 106 transitions, 276 flow [2020-10-16 05:58:00,183 INFO L129 PetriNetUnfolder]: 7/131 cut-off events. [2020-10-16 05:58:00,183 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-16 05:58:00,184 INFO L80 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 131 events. 7/131 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 200 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 151. Up to 10 conditions per place. [2020-10-16 05:58:00,184 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 106 transitions, 276 flow [2020-10-16 05:58:00,185 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 75 transitions, 185 flow [2020-10-16 05:58:00,186 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 05:58:00,186 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 75 transitions, 185 flow [2020-10-16 05:58:00,186 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 75 transitions, 185 flow [2020-10-16 05:58:00,186 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 75 transitions, 185 flow [2020-10-16 05:58:00,196 INFO L129 PetriNetUnfolder]: 7/131 cut-off events. [2020-10-16 05:58:00,196 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-16 05:58:00,197 INFO L80 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 131 events. 7/131 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 198 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 125. Up to 10 conditions per place. [2020-10-16 05:58:00,200 INFO L117 LiptonReduction]: Number of co-enabled transitions 1756 [2020-10-16 05:58:01,175 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2020-10-16 05:58:01,527 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-10-16 05:58:01,679 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-16 05:58:01,689 INFO L132 LiptonReduction]: Checked pairs total: 2872 [2020-10-16 05:58:01,690 INFO L134 LiptonReduction]: Total number of compositions: 64 [2020-10-16 05:58:01,690 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1504 [2020-10-16 05:58:01,691 INFO L129 PetriNetUnfolder]: 0/3 cut-off events. [2020-10-16 05:58:01,691 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:58:01,691 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:58:01,691 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2020-10-16 05:58:01,692 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:58:01,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:58:01,692 INFO L82 PathProgramCache]: Analyzing trace with hash 719895, now seen corresponding path program 1 times [2020-10-16 05:58:01,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:58:01,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133979292] [2020-10-16 05:58:01,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:58:01,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:58:01,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:58:01,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133979292] [2020-10-16 05:58:01,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:58:01,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:58:01,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926180289] [2020-10-16 05:58:01,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:58:01,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:58:01,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:58:01,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:58:01,715 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 170 [2020-10-16 05:58:01,716 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 22 transitions, 79 flow. Second operand 3 states. [2020-10-16 05:58:01,716 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:58:01,716 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 170 [2020-10-16 05:58:01,716 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:58:01,999 INFO L129 PetriNetUnfolder]: 2434/3340 cut-off events. [2020-10-16 05:58:01,999 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-16 05:58:02,007 INFO L80 FinitePrefix]: Finished finitePrefix Result has 6692 conditions, 3340 events. 2434/3340 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 18034 event pairs, 518 based on Foata normal form. 0/2699 useless extension candidates. Maximal degree in co-relation 6680. Up to 2863 conditions per place. [2020-10-16 05:58:02,027 INFO L132 encePairwiseOnDemand]: 164/170 looper letters, 19 selfloop transitions, 5 changer transitions 0/33 dead transitions. [2020-10-16 05:58:02,027 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 33 transitions, 149 flow [2020-10-16 05:58:02,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:58:02,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:58:02,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 337 transitions. [2020-10-16 05:58:02,030 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6607843137254902 [2020-10-16 05:58:02,030 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 337 transitions. [2020-10-16 05:58:02,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 337 transitions. [2020-10-16 05:58:02,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:58:02,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 337 transitions. [2020-10-16 05:58:02,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:58:02,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:58:02,032 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:58:02,032 INFO L185 Difference]: Start difference. First operand has 34 places, 22 transitions, 79 flow. Second operand 3 states and 337 transitions. [2020-10-16 05:58:02,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 33 transitions, 149 flow [2020-10-16 05:58:02,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 33 transitions, 136 flow, removed 6 selfloop flow, removed 1 redundant places. [2020-10-16 05:58:02,034 INFO L241 Difference]: Finished difference. Result has 36 places, 26 transitions, 99 flow [2020-10-16 05:58:02,035 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2020-10-16 05:58:02,035 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2020-10-16 05:58:02,035 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 99 flow [2020-10-16 05:58:02,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:58:02,035 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:58:02,035 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:58:02,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-16 05:58:02,036 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:58:02,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:58:02,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1994870888, now seen corresponding path program 1 times [2020-10-16 05:58:02,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:58:02,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480635749] [2020-10-16 05:58:02,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:58:02,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:58:02,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:58:02,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480635749] [2020-10-16 05:58:02,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:58:02,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:58:02,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605690562] [2020-10-16 05:58:02,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:58:02,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:58:02,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:58:02,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:58:02,067 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 170 [2020-10-16 05:58:02,067 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 99 flow. Second operand 5 states. [2020-10-16 05:58:02,067 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:58:02,068 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 170 [2020-10-16 05:58:02,068 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:58:02,580 INFO L129 PetriNetUnfolder]: 3576/5078 cut-off events. [2020-10-16 05:58:02,580 INFO L130 PetriNetUnfolder]: For 259/259 co-relation queries the response was YES. [2020-10-16 05:58:02,595 INFO L80 FinitePrefix]: Finished finitePrefix Result has 12418 conditions, 5078 events. 3576/5078 cut-off events. For 259/259 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 31693 event pairs, 508 based on Foata normal form. 107/4599 useless extension candidates. Maximal degree in co-relation 12404. Up to 2253 conditions per place. [2020-10-16 05:58:02,623 INFO L132 encePairwiseOnDemand]: 163/170 looper letters, 41 selfloop transitions, 13 changer transitions 0/62 dead transitions. [2020-10-16 05:58:02,623 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 62 transitions, 304 flow [2020-10-16 05:58:02,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:58:02,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:58:02,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 667 transitions. [2020-10-16 05:58:02,626 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.653921568627451 [2020-10-16 05:58:02,626 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 667 transitions. [2020-10-16 05:58:02,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 667 transitions. [2020-10-16 05:58:02,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:58:02,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 667 transitions. [2020-10-16 05:58:02,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:58:02,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:58:02,631 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:58:02,631 INFO L185 Difference]: Start difference. First operand has 36 places, 26 transitions, 99 flow. Second operand 6 states and 667 transitions. [2020-10-16 05:58:02,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 62 transitions, 304 flow [2020-10-16 05:58:02,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 62 transitions, 296 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 05:58:02,633 INFO L241 Difference]: Finished difference. Result has 43 places, 34 transitions, 179 flow [2020-10-16 05:58:02,634 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=179, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2020-10-16 05:58:02,634 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 9 predicate places. [2020-10-16 05:58:02,634 INFO L481 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 179 flow [2020-10-16 05:58:02,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:58:02,634 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:58:02,634 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:58:02,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-16 05:58:02,635 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:58:02,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:58:02,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1753297957, now seen corresponding path program 1 times [2020-10-16 05:58:02,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:58:02,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690577570] [2020-10-16 05:58:02,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:58:02,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:58:02,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 05:58:02,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690577570] [2020-10-16 05:58:02,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:58:02,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:58:02,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294516509] [2020-10-16 05:58:02,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:58:02,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:58:02,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:58:02,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:58:02,668 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 170 [2020-10-16 05:58:02,668 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 179 flow. Second operand 5 states. [2020-10-16 05:58:02,668 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:58:02,668 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 170 [2020-10-16 05:58:02,669 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:58:03,340 INFO L129 PetriNetUnfolder]: 5127/7515 cut-off events. [2020-10-16 05:58:03,340 INFO L130 PetriNetUnfolder]: For 4030/4030 co-relation queries the response was YES. [2020-10-16 05:58:03,368 INFO L80 FinitePrefix]: Finished finitePrefix Result has 22418 conditions, 7515 events. 5127/7515 cut-off events. For 4030/4030 co-relation queries the response was YES. Maximal size of possible extension queue 942. Compared 52488 event pairs, 842 based on Foata normal form. 157/6792 useless extension candidates. Maximal degree in co-relation 22400. Up to 3474 conditions per place. [2020-10-16 05:58:03,403 INFO L132 encePairwiseOnDemand]: 163/170 looper letters, 49 selfloop transitions, 20 changer transitions 0/77 dead transitions. [2020-10-16 05:58:03,403 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 77 transitions, 502 flow [2020-10-16 05:58:03,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:58:03,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:58:03,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 662 transitions. [2020-10-16 05:58:03,406 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6490196078431373 [2020-10-16 05:58:03,406 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 662 transitions. [2020-10-16 05:58:03,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 662 transitions. [2020-10-16 05:58:03,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:58:03,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 662 transitions. [2020-10-16 05:58:03,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:58:03,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:58:03,410 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:58:03,411 INFO L185 Difference]: Start difference. First operand has 43 places, 34 transitions, 179 flow. Second operand 6 states and 662 transitions. [2020-10-16 05:58:03,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 77 transitions, 502 flow [2020-10-16 05:58:03,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 77 transitions, 471 flow, removed 6 selfloop flow, removed 2 redundant places. [2020-10-16 05:58:03,436 INFO L241 Difference]: Finished difference. Result has 49 places, 46 transitions, 311 flow [2020-10-16 05:58:03,437 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=311, PETRI_PLACES=49, PETRI_TRANSITIONS=46} [2020-10-16 05:58:03,437 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 15 predicate places. [2020-10-16 05:58:03,437 INFO L481 AbstractCegarLoop]: Abstraction has has 49 places, 46 transitions, 311 flow [2020-10-16 05:58:03,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:58:03,437 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:58:03,437 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:58:03,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-16 05:58:03,438 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:58:03,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:58:03,438 INFO L82 PathProgramCache]: Analyzing trace with hash 180892130, now seen corresponding path program 1 times [2020-10-16 05:58:03,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:58:03,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554111523] [2020-10-16 05:58:03,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:58:03,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:58:03,487 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 05:58:03,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554111523] [2020-10-16 05:58:03,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967226331] [2020-10-16 05:58:03,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:58:03,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:58:03,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 05:58:03,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 05:58:03,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 05:58:03,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 05:58:03,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 05:58:03,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211515964] [2020-10-16 05:58:03,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 05:58:03,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:58:03,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 05:58:03,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-16 05:58:03,624 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 170 [2020-10-16 05:58:03,625 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 311 flow. Second operand 12 states. [2020-10-16 05:58:03,625 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:58:03,625 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 170 [2020-10-16 05:58:03,625 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:58:04,554 INFO L129 PetriNetUnfolder]: 5374/7933 cut-off events. [2020-10-16 05:58:04,554 INFO L130 PetriNetUnfolder]: For 8803/8803 co-relation queries the response was YES. [2020-10-16 05:58:04,583 INFO L80 FinitePrefix]: Finished finitePrefix Result has 27433 conditions, 7933 events. 5374/7933 cut-off events. For 8803/8803 co-relation queries the response was YES. Maximal size of possible extension queue 1024. Compared 56592 event pairs, 681 based on Foata normal form. 35/7031 useless extension candidates. Maximal degree in co-relation 27412. Up to 2761 conditions per place. [2020-10-16 05:58:04,623 INFO L132 encePairwiseOnDemand]: 162/170 looper letters, 85 selfloop transitions, 38 changer transitions 0/130 dead transitions. [2020-10-16 05:58:04,624 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 130 transitions, 879 flow [2020-10-16 05:58:04,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:58:04,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:58:04,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1407 transitions. [2020-10-16 05:58:04,629 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6366515837104072 [2020-10-16 05:58:04,630 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1407 transitions. [2020-10-16 05:58:04,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1407 transitions. [2020-10-16 05:58:04,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:58:04,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1407 transitions. [2020-10-16 05:58:04,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:58:04,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:58:04,638 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:58:04,638 INFO L185 Difference]: Start difference. First operand has 49 places, 46 transitions, 311 flow. Second operand 13 states and 1407 transitions. [2020-10-16 05:58:04,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 130 transitions, 879 flow [2020-10-16 05:58:04,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 130 transitions, 853 flow, removed 10 selfloop flow, removed 1 redundant places. [2020-10-16 05:58:04,797 INFO L241 Difference]: Finished difference. Result has 63 places, 59 transitions, 496 flow [2020-10-16 05:58:04,798 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=496, PETRI_PLACES=63, PETRI_TRANSITIONS=59} [2020-10-16 05:58:04,798 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 29 predicate places. [2020-10-16 05:58:04,798 INFO L481 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 496 flow [2020-10-16 05:58:04,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 05:58:04,799 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:58:04,799 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:58:05,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-16 05:58:05,014 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:58:05,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:58:05,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1292148820, now seen corresponding path program 2 times [2020-10-16 05:58:05,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:58:05,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209883240] [2020-10-16 05:58:05,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:58:05,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:58:05,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 05:58:05,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209883240] [2020-10-16 05:58:05,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:58:05,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 05:58:05,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846393335] [2020-10-16 05:58:05,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 05:58:05,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:58:05,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 05:58:05,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 05:58:05,073 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 170 [2020-10-16 05:58:05,073 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 496 flow. Second operand 7 states. [2020-10-16 05:58:05,074 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:58:05,074 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 170 [2020-10-16 05:58:05,074 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:58:06,010 INFO L129 PetriNetUnfolder]: 5620/8365 cut-off events. [2020-10-16 05:58:06,011 INFO L130 PetriNetUnfolder]: For 15853/15853 co-relation queries the response was YES. [2020-10-16 05:58:06,193 INFO L80 FinitePrefix]: Finished finitePrefix Result has 32402 conditions, 8365 events. 5620/8365 cut-off events. For 15853/15853 co-relation queries the response was YES. Maximal size of possible extension queue 1114. Compared 61420 event pairs, 704 based on Foata normal form. 35/7398 useless extension candidates. Maximal degree in co-relation 32377. Up to 2492 conditions per place. [2020-10-16 05:58:06,226 INFO L132 encePairwiseOnDemand]: 162/170 looper letters, 88 selfloop transitions, 43 changer transitions 0/138 dead transitions. [2020-10-16 05:58:06,227 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 138 transitions, 1076 flow [2020-10-16 05:58:06,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:58:06,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:58:06,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1407 transitions. [2020-10-16 05:58:06,236 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6366515837104072 [2020-10-16 05:58:06,236 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1407 transitions. [2020-10-16 05:58:06,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1407 transitions. [2020-10-16 05:58:06,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:58:06,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1407 transitions. [2020-10-16 05:58:06,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:58:06,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:58:06,247 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:58:06,247 INFO L185 Difference]: Start difference. First operand has 63 places, 59 transitions, 496 flow. Second operand 13 states and 1407 transitions. [2020-10-16 05:58:06,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 138 transitions, 1076 flow [2020-10-16 05:58:06,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 138 transitions, 992 flow, removed 8 selfloop flow, removed 7 redundant places. [2020-10-16 05:58:06,502 INFO L241 Difference]: Finished difference. Result has 71 places, 68 transitions, 613 flow [2020-10-16 05:58:06,503 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=613, PETRI_PLACES=71, PETRI_TRANSITIONS=68} [2020-10-16 05:58:06,503 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 37 predicate places. [2020-10-16 05:58:06,503 INFO L481 AbstractCegarLoop]: Abstraction has has 71 places, 68 transitions, 613 flow [2020-10-16 05:58:06,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 05:58:06,503 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:58:06,504 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:58:06,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-16 05:58:06,504 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:58:06,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:58:06,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1688505154, now seen corresponding path program 1 times [2020-10-16 05:58:06,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:58:06,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491495784] [2020-10-16 05:58:06,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:58:06,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:58:06,539 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 05:58:06,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491495784] [2020-10-16 05:58:06,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:58:06,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:58:06,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735869264] [2020-10-16 05:58:06,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:58:06,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:58:06,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:58:06,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:58:06,542 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 170 [2020-10-16 05:58:06,542 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 68 transitions, 613 flow. Second operand 5 states. [2020-10-16 05:58:06,542 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:58:06,542 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 170 [2020-10-16 05:58:06,543 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:58:08,214 INFO L129 PetriNetUnfolder]: 7715/11859 cut-off events. [2020-10-16 05:58:08,214 INFO L130 PetriNetUnfolder]: For 36680/36686 co-relation queries the response was YES. [2020-10-16 05:58:08,258 INFO L80 FinitePrefix]: Finished finitePrefix Result has 50277 conditions, 11859 events. 7715/11859 cut-off events. For 36680/36686 co-relation queries the response was YES. Maximal size of possible extension queue 1754. Compared 95204 event pairs, 1208 based on Foata normal form. 250/10625 useless extension candidates. Maximal degree in co-relation 50250. Up to 5721 conditions per place. [2020-10-16 05:58:08,289 INFO L132 encePairwiseOnDemand]: 163/170 looper letters, 98 selfloop transitions, 40 changer transitions 0/146 dead transitions. [2020-10-16 05:58:08,289 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 146 transitions, 1574 flow [2020-10-16 05:58:08,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:58:08,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:58:08,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 662 transitions. [2020-10-16 05:58:08,291 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6490196078431373 [2020-10-16 05:58:08,291 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 662 transitions. [2020-10-16 05:58:08,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 662 transitions. [2020-10-16 05:58:08,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:58:08,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 662 transitions. [2020-10-16 05:58:08,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:58:08,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:58:08,295 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:58:08,295 INFO L185 Difference]: Start difference. First operand has 71 places, 68 transitions, 613 flow. Second operand 6 states and 662 transitions. [2020-10-16 05:58:08,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 146 transitions, 1574 flow [2020-10-16 05:58:08,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 146 transitions, 1401 flow, removed 16 selfloop flow, removed 9 redundant places. [2020-10-16 05:58:08,703 INFO L241 Difference]: Finished difference. Result has 70 places, 95 transitions, 962 flow [2020-10-16 05:58:08,704 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=962, PETRI_PLACES=70, PETRI_TRANSITIONS=95} [2020-10-16 05:58:08,704 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 36 predicate places. [2020-10-16 05:58:08,704 INFO L481 AbstractCegarLoop]: Abstraction has has 70 places, 95 transitions, 962 flow [2020-10-16 05:58:08,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:58:08,704 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:58:08,705 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:58:08,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-16 05:58:08,705 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:58:08,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:58:08,705 INFO L82 PathProgramCache]: Analyzing trace with hash -2001719257, now seen corresponding path program 1 times [2020-10-16 05:58:08,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:58:08,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672785511] [2020-10-16 05:58:08,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:58:08,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:58:08,765 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 05:58:08,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672785511] [2020-10-16 05:58:08,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225633286] [2020-10-16 05:58:08,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:58:08,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:58:08,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 05:58:08,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 05:58:08,913 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 05:58:08,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 05:58:08,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 05:58:08,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081527831] [2020-10-16 05:58:08,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 05:58:08,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:58:08,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 05:58:08,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-16 05:58:08,916 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 170 [2020-10-16 05:58:08,917 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 95 transitions, 962 flow. Second operand 12 states. [2020-10-16 05:58:08,917 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:58:08,918 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 170 [2020-10-16 05:58:08,918 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:58:10,538 INFO L129 PetriNetUnfolder]: 8077/12514 cut-off events. [2020-10-16 05:58:10,539 INFO L130 PetriNetUnfolder]: For 45738/45744 co-relation queries the response was YES. [2020-10-16 05:58:10,588 INFO L80 FinitePrefix]: Finished finitePrefix Result has 56287 conditions, 12514 events. 8077/12514 cut-off events. For 45738/45744 co-relation queries the response was YES. Maximal size of possible extension queue 1913. Compared 103333 event pairs, 990 based on Foata normal form. 75/11018 useless extension candidates. Maximal degree in co-relation 56257. Up to 3566 conditions per place. [2020-10-16 05:58:10,627 INFO L132 encePairwiseOnDemand]: 162/170 looper letters, 116 selfloop transitions, 80 changer transitions 0/203 dead transitions. [2020-10-16 05:58:10,627 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 203 transitions, 2090 flow [2020-10-16 05:58:10,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:58:10,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:58:10,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1409 transitions. [2020-10-16 05:58:10,631 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6375565610859728 [2020-10-16 05:58:10,631 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1409 transitions. [2020-10-16 05:58:10,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1409 transitions. [2020-10-16 05:58:10,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:58:10,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1409 transitions. [2020-10-16 05:58:10,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:58:10,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:58:10,637 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:58:10,638 INFO L185 Difference]: Start difference. First operand has 70 places, 95 transitions, 962 flow. Second operand 13 states and 1409 transitions. [2020-10-16 05:58:10,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 203 transitions, 2090 flow [2020-10-16 05:58:11,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 203 transitions, 2025 flow, removed 28 selfloop flow, removed 1 redundant places. [2020-10-16 05:58:11,666 INFO L241 Difference]: Finished difference. Result has 84 places, 121 transitions, 1430 flow [2020-10-16 05:58:11,666 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=911, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1430, PETRI_PLACES=84, PETRI_TRANSITIONS=121} [2020-10-16 05:58:11,666 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 50 predicate places. [2020-10-16 05:58:11,667 INFO L481 AbstractCegarLoop]: Abstraction has has 84 places, 121 transitions, 1430 flow [2020-10-16 05:58:11,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 05:58:11,667 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:58:11,667 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:58:11,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:58:11,872 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:58:11,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:58:11,873 INFO L82 PathProgramCache]: Analyzing trace with hash -2144894803, now seen corresponding path program 1 times [2020-10-16 05:58:11,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:58:11,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047295536] [2020-10-16 05:58:11,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:58:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:58:11,927 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 05:58:11,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047295536] [2020-10-16 05:58:11,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116493330] [2020-10-16 05:58:11,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:58:12,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:58:12,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 05:58:12,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 05:58:12,124 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 05:58:12,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 05:58:12,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 05:58:12,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548320220] [2020-10-16 05:58:12,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 05:58:12,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:58:12,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 05:58:12,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-16 05:58:12,129 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 170 [2020-10-16 05:58:12,129 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 121 transitions, 1430 flow. Second operand 12 states. [2020-10-16 05:58:12,130 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:58:12,130 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 170 [2020-10-16 05:58:12,130 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:58:13,720 INFO L129 PetriNetUnfolder]: 8352/13049 cut-off events. [2020-10-16 05:58:13,721 INFO L130 PetriNetUnfolder]: For 64367/64367 co-relation queries the response was YES. [2020-10-16 05:58:13,778 INFO L80 FinitePrefix]: Finished finitePrefix Result has 63154 conditions, 13049 events. 8352/13049 cut-off events. For 64367/64367 co-relation queries the response was YES. Maximal size of possible extension queue 2045. Compared 109437 event pairs, 925 based on Foata normal form. 69/11477 useless extension candidates. Maximal degree in co-relation 63120. Up to 3075 conditions per place. [2020-10-16 05:58:13,814 INFO L132 encePairwiseOnDemand]: 162/170 looper letters, 136 selfloop transitions, 91 changer transitions 0/234 dead transitions. [2020-10-16 05:58:13,814 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 234 transitions, 2751 flow [2020-10-16 05:58:13,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:58:13,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:58:13,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1397 transitions. [2020-10-16 05:58:13,817 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6321266968325792 [2020-10-16 05:58:13,817 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1397 transitions. [2020-10-16 05:58:13,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1397 transitions. [2020-10-16 05:58:13,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:58:13,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1397 transitions. [2020-10-16 05:58:13,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:58:13,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:58:13,823 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:58:13,823 INFO L185 Difference]: Start difference. First operand has 84 places, 121 transitions, 1430 flow. Second operand 13 states and 1397 transitions. [2020-10-16 05:58:13,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 234 transitions, 2751 flow [2020-10-16 05:58:15,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 234 transitions, 2666 flow, removed 26 selfloop flow, removed 3 redundant places. [2020-10-16 05:58:15,244 INFO L241 Difference]: Finished difference. Result has 96 places, 150 transitions, 1973 flow [2020-10-16 05:58:15,244 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=1365, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1973, PETRI_PLACES=96, PETRI_TRANSITIONS=150} [2020-10-16 05:58:15,244 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 62 predicate places. [2020-10-16 05:58:15,244 INFO L481 AbstractCegarLoop]: Abstraction has has 96 places, 150 transitions, 1973 flow [2020-10-16 05:58:15,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 05:58:15,244 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:58:15,244 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:58:15,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:58:15,445 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:58:15,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:58:15,446 INFO L82 PathProgramCache]: Analyzing trace with hash 844187883, now seen corresponding path program 2 times [2020-10-16 05:58:15,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:58:15,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506603003] [2020-10-16 05:58:15,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:58:15,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:58:15,495 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 05:58:15,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506603003] [2020-10-16 05:58:15,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:58:15,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 05:58:15,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147199765] [2020-10-16 05:58:15,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 05:58:15,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:58:15,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 05:58:15,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 05:58:15,498 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 170 [2020-10-16 05:58:15,498 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 150 transitions, 1973 flow. Second operand 7 states. [2020-10-16 05:58:15,498 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:58:15,499 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 170 [2020-10-16 05:58:15,499 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:58:17,232 INFO L129 PetriNetUnfolder]: 8613/13540 cut-off events. [2020-10-16 05:58:17,232 INFO L130 PetriNetUnfolder]: For 83921/83921 co-relation queries the response was YES. [2020-10-16 05:58:17,317 INFO L80 FinitePrefix]: Finished finitePrefix Result has 70630 conditions, 13540 events. 8613/13540 cut-off events. For 83921/83921 co-relation queries the response was YES. Maximal size of possible extension queue 2164. Compared 115485 event pairs, 978 based on Foata normal form. 55/11876 useless extension candidates. Maximal degree in co-relation 70593. Up to 3100 conditions per place. [2020-10-16 05:58:17,359 INFO L132 encePairwiseOnDemand]: 162/170 looper letters, 144 selfloop transitions, 100 changer transitions 0/251 dead transitions. [2020-10-16 05:58:17,360 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 251 transitions, 3208 flow [2020-10-16 05:58:17,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:58:17,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:58:17,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1397 transitions. [2020-10-16 05:58:17,362 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6321266968325792 [2020-10-16 05:58:17,362 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1397 transitions. [2020-10-16 05:58:17,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1397 transitions. [2020-10-16 05:58:17,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:58:17,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1397 transitions. [2020-10-16 05:58:17,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:58:17,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:58:17,367 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:58:17,367 INFO L185 Difference]: Start difference. First operand has 96 places, 150 transitions, 1973 flow. Second operand 13 states and 1397 transitions. [2020-10-16 05:58:17,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 251 transitions, 3208 flow [2020-10-16 05:58:19,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 251 transitions, 3156 flow, removed 24 selfloop flow, removed 1 redundant places. [2020-10-16 05:58:19,642 INFO L241 Difference]: Finished difference. Result has 110 places, 167 transitions, 2420 flow [2020-10-16 05:58:19,642 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=1927, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2420, PETRI_PLACES=110, PETRI_TRANSITIONS=167} [2020-10-16 05:58:19,642 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 76 predicate places. [2020-10-16 05:58:19,643 INFO L481 AbstractCegarLoop]: Abstraction has has 110 places, 167 transitions, 2420 flow [2020-10-16 05:58:19,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 05:58:19,643 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:58:19,643 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:58:19,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-16 05:58:19,643 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:58:19,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:58:19,644 INFO L82 PathProgramCache]: Analyzing trace with hash 844192719, now seen corresponding path program 2 times [2020-10-16 05:58:19,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:58:19,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275925342] [2020-10-16 05:58:19,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:58:19,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:58:19,692 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 05:58:19,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275925342] [2020-10-16 05:58:19,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:58:19,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 05:58:19,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025935122] [2020-10-16 05:58:19,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 05:58:19,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:58:19,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 05:58:19,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 05:58:19,695 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 170 [2020-10-16 05:58:19,695 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 167 transitions, 2420 flow. Second operand 7 states. [2020-10-16 05:58:19,695 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:58:19,696 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 170 [2020-10-16 05:58:19,696 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:58:21,683 INFO L129 PetriNetUnfolder]: 8876/14053 cut-off events. [2020-10-16 05:58:21,684 INFO L130 PetriNetUnfolder]: For 108485/108491 co-relation queries the response was YES. [2020-10-16 05:58:21,792 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78185 conditions, 14053 events. 8876/14053 cut-off events. For 108485/108491 co-relation queries the response was YES. Maximal size of possible extension queue 2296. Compared 121675 event pairs, 1016 based on Foata normal form. 75/12311 useless extension candidates. Maximal degree in co-relation 78144. Up to 3184 conditions per place. [2020-10-16 05:58:21,839 INFO L132 encePairwiseOnDemand]: 162/170 looper letters, 148 selfloop transitions, 113 changer transitions 0/268 dead transitions. [2020-10-16 05:58:21,840 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 268 transitions, 3804 flow [2020-10-16 05:58:21,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:58:21,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:58:21,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1409 transitions. [2020-10-16 05:58:21,841 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6375565610859728 [2020-10-16 05:58:21,842 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1409 transitions. [2020-10-16 05:58:21,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1409 transitions. [2020-10-16 05:58:21,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:58:21,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1409 transitions. [2020-10-16 05:58:21,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:58:21,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:58:21,845 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:58:21,845 INFO L185 Difference]: Start difference. First operand has 110 places, 167 transitions, 2420 flow. Second operand 13 states and 1409 transitions. [2020-10-16 05:58:21,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 268 transitions, 3804 flow [2020-10-16 05:58:26,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 268 transitions, 3557 flow, removed 29 selfloop flow, removed 9 redundant places. [2020-10-16 05:58:26,037 INFO L241 Difference]: Finished difference. Result has 116 places, 189 transitions, 2838 flow [2020-10-16 05:58:26,037 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=2221, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2838, PETRI_PLACES=116, PETRI_TRANSITIONS=189} [2020-10-16 05:58:26,038 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 82 predicate places. [2020-10-16 05:58:26,038 INFO L481 AbstractCegarLoop]: Abstraction has has 116 places, 189 transitions, 2838 flow [2020-10-16 05:58:26,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 05:58:26,038 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:58:26,038 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:58:26,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-16 05:58:26,038 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:58:26,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:58:26,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1920026451, now seen corresponding path program 1 times [2020-10-16 05:58:26,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:58:26,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197596297] [2020-10-16 05:58:26,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:58:26,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:58:26,084 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 05:58:26,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197596297] [2020-10-16 05:58:26,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:58:26,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:58:26,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977152887] [2020-10-16 05:58:26,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:58:26,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:58:26,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:58:26,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:58:26,087 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 170 [2020-10-16 05:58:26,087 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 189 transitions, 2838 flow. Second operand 5 states. [2020-10-16 05:58:26,088 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:58:26,088 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 170 [2020-10-16 05:58:26,088 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:58:28,742 INFO L129 PetriNetUnfolder]: 11650/18969 cut-off events. [2020-10-16 05:58:28,742 INFO L130 PetriNetUnfolder]: For 193622/193661 co-relation queries the response was YES. [2020-10-16 05:58:28,882 INFO L80 FinitePrefix]: Finished finitePrefix Result has 107448 conditions, 18969 events. 11650/18969 cut-off events. For 193622/193661 co-relation queries the response was YES. Maximal size of possible extension queue 3339. Compared 175143 event pairs, 1305 based on Foata normal form. 415/16918 useless extension candidates. Maximal degree in co-relation 107404. Up to 10089 conditions per place. [2020-10-16 05:58:28,941 INFO L132 encePairwiseOnDemand]: 163/170 looper letters, 279 selfloop transitions, 89 changer transitions 0/376 dead transitions. [2020-10-16 05:58:28,941 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 376 transitions, 6442 flow [2020-10-16 05:58:28,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:58:28,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:58:28,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 662 transitions. [2020-10-16 05:58:28,943 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6490196078431373 [2020-10-16 05:58:28,943 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 662 transitions. [2020-10-16 05:58:28,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 662 transitions. [2020-10-16 05:58:28,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:58:28,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 662 transitions. [2020-10-16 05:58:28,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:58:28,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:58:28,945 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:58:28,945 INFO L185 Difference]: Start difference. First operand has 116 places, 189 transitions, 2838 flow. Second operand 6 states and 662 transitions. [2020-10-16 05:58:28,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 376 transitions, 6442 flow [2020-10-16 05:58:34,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 376 transitions, 6204 flow, removed 45 selfloop flow, removed 6 redundant places. [2020-10-16 05:58:34,837 INFO L241 Difference]: Finished difference. Result has 118 places, 257 transitions, 4245 flow [2020-10-16 05:58:34,838 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=2708, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4245, PETRI_PLACES=118, PETRI_TRANSITIONS=257} [2020-10-16 05:58:34,838 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 84 predicate places. [2020-10-16 05:58:34,838 INFO L481 AbstractCegarLoop]: Abstraction has has 118 places, 257 transitions, 4245 flow [2020-10-16 05:58:34,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:58:34,839 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:58:34,839 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:58:34,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-16 05:58:34,839 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:58:34,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:58:34,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1825254528, now seen corresponding path program 1 times [2020-10-16 05:58:34,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:58:34,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308237693] [2020-10-16 05:58:34,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:58:34,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:58:34,921 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 05:58:34,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308237693] [2020-10-16 05:58:34,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089470223] [2020-10-16 05:58:34,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:58:34,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:58:34,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 05:58:35,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 05:58:35,122 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 05:58:35,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 05:58:35,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 05:58:35,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622014002] [2020-10-16 05:58:35,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 05:58:35,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:58:35,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 05:58:35,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-10-16 05:58:35,127 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 170 [2020-10-16 05:58:35,129 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 257 transitions, 4245 flow. Second operand 16 states. [2020-10-16 05:58:35,129 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:58:35,129 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 170 [2020-10-16 05:58:35,129 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:58:38,182 INFO L129 PetriNetUnfolder]: 11355/18487 cut-off events. [2020-10-16 05:58:38,182 INFO L130 PetriNetUnfolder]: For 186352/186352 co-relation queries the response was YES. [2020-10-16 05:58:38,351 INFO L80 FinitePrefix]: Finished finitePrefix Result has 109323 conditions, 18487 events. 11355/18487 cut-off events. For 186352/186352 co-relation queries the response was YES. Maximal size of possible extension queue 3363. Compared 175311 event pairs, 834 based on Foata normal form. 17/16057 useless extension candidates. Maximal degree in co-relation 109276. Up to 3848 conditions per place. [2020-10-16 05:58:38,808 INFO L132 encePairwiseOnDemand]: 161/170 looper letters, 210 selfloop transitions, 244 changer transitions 0/460 dead transitions. [2020-10-16 05:58:38,808 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 460 transitions, 7074 flow [2020-10-16 05:58:38,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 05:58:38,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 05:58:38,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3035 transitions. [2020-10-16 05:58:38,812 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6156186612576064 [2020-10-16 05:58:38,812 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3035 transitions. [2020-10-16 05:58:38,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3035 transitions. [2020-10-16 05:58:38,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:58:38,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3035 transitions. [2020-10-16 05:58:38,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 05:58:38,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 05:58:38,820 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 05:58:38,820 INFO L185 Difference]: Start difference. First operand has 118 places, 257 transitions, 4245 flow. Second operand 29 states and 3035 transitions. [2020-10-16 05:58:38,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 460 transitions, 7074 flow [2020-10-16 05:58:45,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 460 transitions, 6695 flow, removed 183 selfloop flow, removed 1 redundant places. [2020-10-16 05:58:45,862 INFO L241 Difference]: Finished difference. Result has 148 places, 290 transitions, 5180 flow [2020-10-16 05:58:45,862 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=4048, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=5180, PETRI_PLACES=148, PETRI_TRANSITIONS=290} [2020-10-16 05:58:45,863 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 114 predicate places. [2020-10-16 05:58:45,863 INFO L481 AbstractCegarLoop]: Abstraction has has 148 places, 290 transitions, 5180 flow [2020-10-16 05:58:45,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 05:58:45,863 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:58:45,863 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:58:46,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-10-16 05:58:46,064 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:58:46,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:58:46,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1033127428, now seen corresponding path program 2 times [2020-10-16 05:58:46,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:58:46,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309279599] [2020-10-16 05:58:46,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:58:46,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:58:46,143 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 05:58:46,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309279599] [2020-10-16 05:58:46,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:58:46,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 05:58:46,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807433424] [2020-10-16 05:58:46,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 05:58:46,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:58:46,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 05:58:46,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 05:58:46,148 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 170 [2020-10-16 05:58:46,148 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 290 transitions, 5180 flow. Second operand 9 states. [2020-10-16 05:58:46,148 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:58:46,148 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 170 [2020-10-16 05:58:46,149 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:58:49,339 INFO L129 PetriNetUnfolder]: 11378/18550 cut-off events. [2020-10-16 05:58:49,340 INFO L130 PetriNetUnfolder]: For 203823/203823 co-relation queries the response was YES. [2020-10-16 05:58:49,520 INFO L80 FinitePrefix]: Finished finitePrefix Result has 113393 conditions, 18550 events. 11378/18550 cut-off events. For 203823/203823 co-relation queries the response was YES. Maximal size of possible extension queue 3387. Compared 176191 event pairs, 837 based on Foata normal form. 17/16101 useless extension candidates. Maximal degree in co-relation 113342. Up to 3261 conditions per place. [2020-10-16 05:58:49,581 INFO L132 encePairwiseOnDemand]: 161/170 looper letters, 212 selfloop transitions, 253 changer transitions 0/471 dead transitions. [2020-10-16 05:58:49,581 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 471 transitions, 7554 flow [2020-10-16 05:58:49,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 05:58:49,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 05:58:49,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3035 transitions. [2020-10-16 05:58:49,584 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6156186612576064 [2020-10-16 05:58:49,585 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3035 transitions. [2020-10-16 05:58:49,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3035 transitions. [2020-10-16 05:58:49,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:58:49,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3035 transitions. [2020-10-16 05:58:49,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 05:58:49,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 05:58:49,595 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 05:58:49,595 INFO L185 Difference]: Start difference. First operand has 148 places, 290 transitions, 5180 flow. Second operand 29 states and 3035 transitions. [2020-10-16 05:58:49,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 471 transitions, 7554 flow [2020-10-16 05:59:01,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 471 transitions, 7069 flow, removed 32 selfloop flow, removed 20 redundant places. [2020-10-16 05:59:01,802 INFO L241 Difference]: Finished difference. Result has 159 places, 309 transitions, 5637 flow [2020-10-16 05:59:01,803 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=4711, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=5637, PETRI_PLACES=159, PETRI_TRANSITIONS=309} [2020-10-16 05:59:01,803 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 125 predicate places. [2020-10-16 05:59:01,804 INFO L481 AbstractCegarLoop]: Abstraction has has 159 places, 309 transitions, 5637 flow [2020-10-16 05:59:01,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 05:59:01,804 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:59:01,804 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:59:01,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-16 05:59:01,804 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:59:01,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:59:01,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1195940292, now seen corresponding path program 3 times [2020-10-16 05:59:01,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:59:01,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543124365] [2020-10-16 05:59:01,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:59:01,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:59:01,888 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 05:59:01,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543124365] [2020-10-16 05:59:01,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:59:01,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 05:59:01,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568632530] [2020-10-16 05:59:01,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 05:59:01,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:59:01,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 05:59:01,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 05:59:01,893 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 170 [2020-10-16 05:59:01,894 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 309 transitions, 5637 flow. Second operand 9 states. [2020-10-16 05:59:01,894 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:59:01,894 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 170 [2020-10-16 05:59:01,895 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:59:07,162 INFO L129 PetriNetUnfolder]: 11401/18613 cut-off events. [2020-10-16 05:59:07,163 INFO L130 PetriNetUnfolder]: For 222066/222066 co-relation queries the response was YES. [2020-10-16 05:59:07,440 INFO L80 FinitePrefix]: Finished finitePrefix Result has 117569 conditions, 18613 events. 11401/18613 cut-off events. For 222066/222066 co-relation queries the response was YES. Maximal size of possible extension queue 3411. Compared 177372 event pairs, 810 based on Foata normal form. 17/16151 useless extension candidates. Maximal degree in co-relation 117517. Up to 3271 conditions per place. [2020-10-16 05:59:07,527 INFO L132 encePairwiseOnDemand]: 161/170 looper letters, 218 selfloop transitions, 265 changer transitions 0/489 dead transitions. [2020-10-16 05:59:07,528 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 489 transitions, 8086 flow [2020-10-16 05:59:07,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 05:59:07,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 05:59:07,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3035 transitions. [2020-10-16 05:59:07,534 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6156186612576064 [2020-10-16 05:59:07,534 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3035 transitions. [2020-10-16 05:59:07,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3035 transitions. [2020-10-16 05:59:07,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:59:07,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3035 transitions. [2020-10-16 05:59:07,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 05:59:07,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 05:59:07,547 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 05:59:07,547 INFO L185 Difference]: Start difference. First operand has 159 places, 309 transitions, 5637 flow. Second operand 29 states and 3035 transitions. [2020-10-16 05:59:07,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 489 transitions, 8086 flow [2020-10-16 05:59:24,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 489 transitions, 7656 flow, removed 28 selfloop flow, removed 18 redundant places. [2020-10-16 05:59:24,558 INFO L241 Difference]: Finished difference. Result has 172 places, 334 transitions, 6293 flow [2020-10-16 05:59:24,558 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=5221, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=240, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=6293, PETRI_PLACES=172, PETRI_TRANSITIONS=334} [2020-10-16 05:59:24,559 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 138 predicate places. [2020-10-16 05:59:24,559 INFO L481 AbstractCegarLoop]: Abstraction has has 172 places, 334 transitions, 6293 flow [2020-10-16 05:59:24,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 05:59:24,559 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:59:24,559 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:59:24,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-16 05:59:24,559 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:59:24,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:59:24,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1204302852, now seen corresponding path program 4 times [2020-10-16 05:59:24,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:59:24,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176329695] [2020-10-16 05:59:24,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:59:24,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:59:24,634 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 05:59:24,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176329695] [2020-10-16 05:59:24,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:59:24,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 05:59:24,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474834006] [2020-10-16 05:59:24,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 05:59:24,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:59:24,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 05:59:24,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 05:59:24,638 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 170 [2020-10-16 05:59:24,639 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 334 transitions, 6293 flow. Second operand 9 states. [2020-10-16 05:59:24,639 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:59:24,639 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 170 [2020-10-16 05:59:24,639 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:59:29,724 INFO L129 PetriNetUnfolder]: 11424/18676 cut-off events. [2020-10-16 05:59:29,724 INFO L130 PetriNetUnfolder]: For 244413/244413 co-relation queries the response was YES. [2020-10-16 05:59:29,980 INFO L80 FinitePrefix]: Finished finitePrefix Result has 121455 conditions, 18676 events. 11424/18676 cut-off events. For 244413/244413 co-relation queries the response was YES. Maximal size of possible extension queue 3435. Compared 178925 event pairs, 755 based on Foata normal form. 17/16201 useless extension candidates. Maximal degree in co-relation 121400. Up to 3281 conditions per place. [2020-10-16 05:59:30,061 INFO L132 encePairwiseOnDemand]: 161/170 looper letters, 241 selfloop transitions, 266 changer transitions 0/513 dead transitions. [2020-10-16 05:59:30,062 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 513 transitions, 8819 flow [2020-10-16 05:59:30,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 05:59:30,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 05:59:30,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3035 transitions. [2020-10-16 05:59:30,067 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6156186612576064 [2020-10-16 05:59:30,067 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3035 transitions. [2020-10-16 05:59:30,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3035 transitions. [2020-10-16 05:59:30,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:59:30,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3035 transitions. [2020-10-16 05:59:30,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 05:59:30,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 05:59:30,079 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 05:59:30,079 INFO L185 Difference]: Start difference. First operand has 172 places, 334 transitions, 6293 flow. Second operand 29 states and 3035 transitions. [2020-10-16 05:59:30,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 513 transitions, 8819 flow [2020-10-16 05:59:48,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 513 transitions, 8387 flow, removed 26 selfloop flow, removed 19 redundant places. [2020-10-16 05:59:48,358 INFO L241 Difference]: Finished difference. Result has 184 places, 353 transitions, 6857 flow [2020-10-16 05:59:48,359 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=5875, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=247, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=6857, PETRI_PLACES=184, PETRI_TRANSITIONS=353} [2020-10-16 05:59:48,359 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 150 predicate places. [2020-10-16 05:59:48,360 INFO L481 AbstractCegarLoop]: Abstraction has has 184 places, 353 transitions, 6857 flow [2020-10-16 05:59:48,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 05:59:48,360 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:59:48,360 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:59:48,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-16 05:59:48,360 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:59:48,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:59:48,361 INFO L82 PathProgramCache]: Analyzing trace with hash -484255556, now seen corresponding path program 5 times [2020-10-16 05:59:48,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:59:48,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584854389] [2020-10-16 05:59:48,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:59:48,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:59:48,456 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 05:59:48,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584854389] [2020-10-16 05:59:48,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:59:48,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 05:59:48,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297914169] [2020-10-16 05:59:48,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 05:59:48,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:59:48,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 05:59:48,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 05:59:48,459 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 170 [2020-10-16 05:59:48,460 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 353 transitions, 6857 flow. Second operand 9 states. [2020-10-16 05:59:48,460 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:59:48,460 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 170 [2020-10-16 05:59:48,460 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:59:53,710 INFO L129 PetriNetUnfolder]: 11447/18739 cut-off events. [2020-10-16 05:59:53,710 INFO L130 PetriNetUnfolder]: For 263126/263126 co-relation queries the response was YES. [2020-10-16 05:59:54,074 INFO L80 FinitePrefix]: Finished finitePrefix Result has 125470 conditions, 18739 events. 11447/18739 cut-off events. For 263126/263126 co-relation queries the response was YES. Maximal size of possible extension queue 3459. Compared 179374 event pairs, 728 based on Foata normal form. 17/16251 useless extension candidates. Maximal degree in co-relation 125412. Up to 3291 conditions per place. [2020-10-16 05:59:54,175 INFO L132 encePairwiseOnDemand]: 161/170 looper letters, 247 selfloop transitions, 274 changer transitions 0/527 dead transitions. [2020-10-16 05:59:54,175 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 527 transitions, 9320 flow [2020-10-16 05:59:54,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 05:59:54,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 05:59:54,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3035 transitions. [2020-10-16 05:59:54,181 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6156186612576064 [2020-10-16 05:59:54,182 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3035 transitions. [2020-10-16 05:59:54,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3035 transitions. [2020-10-16 05:59:54,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:59:54,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3035 transitions. [2020-10-16 05:59:54,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 05:59:54,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 05:59:54,194 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 05:59:54,194 INFO L185 Difference]: Start difference. First operand has 184 places, 353 transitions, 6857 flow. Second operand 29 states and 3035 transitions. [2020-10-16 05:59:54,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 527 transitions, 9320 flow [2020-10-16 06:00:18,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 527 transitions, 8875 flow, removed 35 selfloop flow, removed 19 redundant places. [2020-10-16 06:00:18,098 INFO L241 Difference]: Finished difference. Result has 196 places, 374 transitions, 7438 flow [2020-10-16 06:00:18,099 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=6420, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=253, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=7438, PETRI_PLACES=196, PETRI_TRANSITIONS=374} [2020-10-16 06:00:18,100 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 162 predicate places. [2020-10-16 06:00:18,100 INFO L481 AbstractCegarLoop]: Abstraction has has 196 places, 374 transitions, 7438 flow [2020-10-16 06:00:18,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 06:00:18,100 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 06:00:18,101 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 06:00:18,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-16 06:00:18,101 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 06:00:18,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 06:00:18,102 INFO L82 PathProgramCache]: Analyzing trace with hash -479612996, now seen corresponding path program 6 times [2020-10-16 06:00:18,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 06:00:18,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207398719] [2020-10-16 06:00:18,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 06:00:18,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 06:00:18,185 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 06:00:18,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207398719] [2020-10-16 06:00:18,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 06:00:18,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 06:00:18,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662369848] [2020-10-16 06:00:18,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 06:00:18,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 06:00:18,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 06:00:18,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 06:00:18,190 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 170 [2020-10-16 06:00:18,191 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 374 transitions, 7438 flow. Second operand 9 states. [2020-10-16 06:00:18,191 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 06:00:18,191 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 170 [2020-10-16 06:00:18,191 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 06:00:23,537 INFO L129 PetriNetUnfolder]: 11470/18802 cut-off events. [2020-10-16 06:00:23,537 INFO L130 PetriNetUnfolder]: For 284018/284018 co-relation queries the response was YES. [2020-10-16 06:00:23,852 INFO L80 FinitePrefix]: Finished finitePrefix Result has 129504 conditions, 18802 events. 11470/18802 cut-off events. For 284018/284018 co-relation queries the response was YES. Maximal size of possible extension queue 3483. Compared 179760 event pairs, 731 based on Foata normal form. 17/16307 useless extension candidates. Maximal degree in co-relation 129443. Up to 3301 conditions per place. [2020-10-16 06:00:23,944 INFO L132 encePairwiseOnDemand]: 161/170 looper letters, 249 selfloop transitions, 279 changer transitions 0/534 dead transitions. [2020-10-16 06:00:23,945 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 534 transitions, 9710 flow [2020-10-16 06:00:23,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 06:00:23,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 06:00:23,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3035 transitions. [2020-10-16 06:00:23,949 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6156186612576064 [2020-10-16 06:00:23,950 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3035 transitions. [2020-10-16 06:00:23,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3035 transitions. [2020-10-16 06:00:23,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 06:00:23,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3035 transitions. [2020-10-16 06:00:23,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 06:00:23,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 06:00:23,961 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 06:00:23,961 INFO L185 Difference]: Start difference. First operand has 196 places, 374 transitions, 7438 flow. Second operand 29 states and 3035 transitions. [2020-10-16 06:00:23,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 534 transitions, 9710 flow [2020-10-16 06:00:45,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 534 transitions, 9255 flow, removed 27 selfloop flow, removed 20 redundant places. [2020-10-16 06:00:45,514 INFO L241 Difference]: Finished difference. Result has 207 places, 387 transitions, 7869 flow [2020-10-16 06:00:45,514 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=6989, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=266, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=7869, PETRI_PLACES=207, PETRI_TRANSITIONS=387} [2020-10-16 06:00:45,515 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 173 predicate places. [2020-10-16 06:00:45,515 INFO L481 AbstractCegarLoop]: Abstraction has has 207 places, 387 transitions, 7869 flow [2020-10-16 06:00:45,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 06:00:45,515 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 06:00:45,516 INFO L255 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 06:00:45,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-16 06:00:45,516 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 06:00:45,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 06:00:45,516 INFO L82 PathProgramCache]: Analyzing trace with hash -612301355, now seen corresponding path program 1 times [2020-10-16 06:00:45,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 06:00:45,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038589564] [2020-10-16 06:00:45,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 06:00:45,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 06:00:45,528 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 06:00:45,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 06:00:45,538 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 06:00:45,547 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 06:00:45,547 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 06:00:45,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-16 06:00:45,548 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 06:00:45,549 WARN L371 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 06:00:45,549 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-10-16 06:00:45,569 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,569 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,569 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,569 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,569 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,570 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,570 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,570 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,570 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,570 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,571 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,571 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,571 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,571 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,571 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,572 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,572 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,572 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,572 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,572 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,572 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,573 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,573 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,573 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,573 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,573 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,574 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,574 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,574 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,574 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,574 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,575 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,575 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,575 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,575 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,576 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,576 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,576 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,576 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,576 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,577 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,577 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,577 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,577 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,577 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,578 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,578 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,578 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,578 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,578 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,578 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,579 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,579 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,579 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,579 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,580 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,580 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,580 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,580 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,580 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,580 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,581 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,581 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,581 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,581 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,582 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,582 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,582 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,582 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,583 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,583 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,583 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,583 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,583 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,583 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,584 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,584 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,584 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,584 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,584 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,585 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,585 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,585 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,585 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,585 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,586 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,586 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,586 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,586 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,587 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,588 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,589 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,589 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,589 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,589 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,591 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,592 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,592 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,592 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,592 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,593 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,594 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,594 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,594 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,594 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,595 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,596 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,596 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,596 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,596 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,598 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,598 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,598 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,598 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,599 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,599 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,601 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,601 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,601 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,601 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,601 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,602 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,604 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,604 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,604 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,604 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,605 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,605 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,606 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,607 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,607 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,607 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,607 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,607 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,609 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,609 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,609 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,609 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,609 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,610 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:45,611 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-16 06:00:45,611 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 06:00:45,611 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 06:00:45,611 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 06:00:45,611 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 06:00:45,611 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 06:00:45,611 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 06:00:45,612 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 06:00:45,612 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 06:00:45,613 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 137 places, 122 transitions, 334 flow [2020-10-16 06:00:45,628 INFO L129 PetriNetUnfolder]: 8/152 cut-off events. [2020-10-16 06:00:45,628 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-16 06:00:45,630 INFO L80 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 152 events. 8/152 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 251 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 179. Up to 12 conditions per place. [2020-10-16 06:00:45,630 INFO L82 GeneralOperation]: Start removeDead. Operand has 137 places, 122 transitions, 334 flow [2020-10-16 06:00:45,632 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 81 transitions, 210 flow [2020-10-16 06:00:45,632 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 06:00:45,633 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 81 transitions, 210 flow [2020-10-16 06:00:45,633 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 81 transitions, 210 flow [2020-10-16 06:00:45,633 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 92 places, 81 transitions, 210 flow [2020-10-16 06:00:45,647 INFO L129 PetriNetUnfolder]: 8/152 cut-off events. [2020-10-16 06:00:45,648 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-16 06:00:45,649 INFO L80 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 152 events. 8/152 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 253 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 153. Up to 12 conditions per place. [2020-10-16 06:00:45,654 INFO L117 LiptonReduction]: Number of co-enabled transitions 2264 [2020-10-16 06:00:47,077 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2020-10-16 06:00:47,423 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-10-16 06:00:47,590 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-16 06:00:47,601 INFO L132 LiptonReduction]: Checked pairs total: 3488 [2020-10-16 06:00:47,601 INFO L134 LiptonReduction]: Total number of compositions: 63 [2020-10-16 06:00:47,602 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1970 [2020-10-16 06:00:47,603 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2020-10-16 06:00:47,603 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 06:00:47,604 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 06:00:47,604 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2020-10-16 06:00:47,604 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 06:00:47,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 06:00:47,604 INFO L82 PathProgramCache]: Analyzing trace with hash 921412, now seen corresponding path program 1 times [2020-10-16 06:00:47,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 06:00:47,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416628243] [2020-10-16 06:00:47,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 06:00:47,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 06:00:47,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 06:00:47,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416628243] [2020-10-16 06:00:47,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 06:00:47,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 06:00:47,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382953513] [2020-10-16 06:00:47,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 06:00:47,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 06:00:47,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 06:00:47,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 06:00:47,632 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 185 [2020-10-16 06:00:47,633 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 25 transitions, 98 flow. Second operand 3 states. [2020-10-16 06:00:47,633 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 06:00:47,633 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 185 [2020-10-16 06:00:47,633 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 06:00:48,527 INFO L129 PetriNetUnfolder]: 9406/12179 cut-off events. [2020-10-16 06:00:48,528 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-16 06:00:48,633 INFO L80 FinitePrefix]: Finished finitePrefix Result has 24375 conditions, 12179 events. 9406/12179 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 944. Compared 66749 event pairs, 1879 based on Foata normal form. 0/10226 useless extension candidates. Maximal degree in co-relation 24362. Up to 11075 conditions per place. [2020-10-16 06:00:48,692 INFO L132 encePairwiseOnDemand]: 178/185 looper letters, 22 selfloop transitions, 6 changer transitions 0/38 dead transitions. [2020-10-16 06:00:48,692 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 38 transitions, 180 flow [2020-10-16 06:00:48,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 06:00:48,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 06:00:48,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 374 transitions. [2020-10-16 06:00:48,694 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6738738738738739 [2020-10-16 06:00:48,694 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 374 transitions. [2020-10-16 06:00:48,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 374 transitions. [2020-10-16 06:00:48,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 06:00:48,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 374 transitions. [2020-10-16 06:00:48,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 06:00:48,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 06:00:48,695 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 06:00:48,695 INFO L185 Difference]: Start difference. First operand has 39 places, 25 transitions, 98 flow. Second operand 3 states and 374 transitions. [2020-10-16 06:00:48,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 38 transitions, 180 flow [2020-10-16 06:00:48,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 38 transitions, 159 flow, removed 10 selfloop flow, removed 1 redundant places. [2020-10-16 06:00:48,697 INFO L241 Difference]: Finished difference. Result has 41 places, 30 transitions, 117 flow [2020-10-16 06:00:48,697 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=41, PETRI_TRANSITIONS=30} [2020-10-16 06:00:48,697 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2020-10-16 06:00:48,698 INFO L481 AbstractCegarLoop]: Abstraction has has 41 places, 30 transitions, 117 flow [2020-10-16 06:00:48,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 06:00:48,698 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 06:00:48,698 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 06:00:48,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-16 06:00:48,699 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 06:00:48,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 06:00:48,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1176697087, now seen corresponding path program 1 times [2020-10-16 06:00:48,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 06:00:48,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765367102] [2020-10-16 06:00:48,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 06:00:48,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 06:00:48,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 06:00:48,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765367102] [2020-10-16 06:00:48,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 06:00:48,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 06:00:48,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886567054] [2020-10-16 06:00:48,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 06:00:48,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 06:00:48,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 06:00:48,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 06:00:48,767 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 185 [2020-10-16 06:00:48,768 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 30 transitions, 117 flow. Second operand 5 states. [2020-10-16 06:00:48,768 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 06:00:48,768 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 185 [2020-10-16 06:00:48,768 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 06:00:50,403 INFO L129 PetriNetUnfolder]: 15176/20092 cut-off events. [2020-10-16 06:00:50,403 INFO L130 PetriNetUnfolder]: For 1041/1041 co-relation queries the response was YES. [2020-10-16 06:00:50,519 INFO L80 FinitePrefix]: Finished finitePrefix Result has 49217 conditions, 20092 events. 15176/20092 cut-off events. For 1041/1041 co-relation queries the response was YES. Maximal size of possible extension queue 1755. Compared 126905 event pairs, 2315 based on Foata normal form. 323/18514 useless extension candidates. Maximal degree in co-relation 49202. Up to 9537 conditions per place. [2020-10-16 06:00:50,622 INFO L132 encePairwiseOnDemand]: 177/185 looper letters, 48 selfloop transitions, 16 changer transitions 0/73 dead transitions. [2020-10-16 06:00:50,623 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 73 transitions, 363 flow [2020-10-16 06:00:50,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 06:00:50,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 06:00:50,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 737 transitions. [2020-10-16 06:00:50,624 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.663963963963964 [2020-10-16 06:00:50,625 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 737 transitions. [2020-10-16 06:00:50,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 737 transitions. [2020-10-16 06:00:50,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 06:00:50,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 737 transitions. [2020-10-16 06:00:50,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 06:00:50,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 06:00:50,627 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 06:00:50,627 INFO L185 Difference]: Start difference. First operand has 41 places, 30 transitions, 117 flow. Second operand 6 states and 737 transitions. [2020-10-16 06:00:50,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 73 transitions, 363 flow [2020-10-16 06:00:50,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 73 transitions, 353 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 06:00:50,632 INFO L241 Difference]: Finished difference. Result has 48 places, 40 transitions, 216 flow [2020-10-16 06:00:50,632 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2020-10-16 06:00:50,633 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 9 predicate places. [2020-10-16 06:00:50,633 INFO L481 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 216 flow [2020-10-16 06:00:50,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 06:00:50,633 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 06:00:50,633 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 06:00:50,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-16 06:00:50,634 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 06:00:50,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 06:00:50,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1772932976, now seen corresponding path program 1 times [2020-10-16 06:00:50,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 06:00:50,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017687648] [2020-10-16 06:00:50,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 06:00:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 06:00:50,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 06:00:50,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017687648] [2020-10-16 06:00:50,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 06:00:50,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 06:00:50,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316258638] [2020-10-16 06:00:50,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 06:00:50,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 06:00:50,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 06:00:50,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 06:00:50,686 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 185 [2020-10-16 06:00:50,687 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 216 flow. Second operand 5 states. [2020-10-16 06:00:50,687 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 06:00:50,687 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 185 [2020-10-16 06:00:50,687 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 06:00:53,975 INFO L129 PetriNetUnfolder]: 24103/32563 cut-off events. [2020-10-16 06:00:53,976 INFO L130 PetriNetUnfolder]: For 14291/14291 co-relation queries the response was YES. [2020-10-16 06:00:54,144 INFO L80 FinitePrefix]: Finished finitePrefix Result has 97846 conditions, 32563 events. 24103/32563 cut-off events. For 14291/14291 co-relation queries the response was YES. Maximal size of possible extension queue 3152. Compared 228520 event pairs, 3971 based on Foata normal form. 497/29900 useless extension candidates. Maximal degree in co-relation 97827. Up to 16050 conditions per place. [2020-10-16 06:00:54,282 INFO L132 encePairwiseOnDemand]: 177/185 looper letters, 58 selfloop transitions, 25 changer transitions 0/92 dead transitions. [2020-10-16 06:00:54,283 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 92 transitions, 609 flow [2020-10-16 06:00:54,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 06:00:54,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 06:00:54,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 744 transitions. [2020-10-16 06:00:54,284 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6702702702702703 [2020-10-16 06:00:54,284 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 744 transitions. [2020-10-16 06:00:54,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 744 transitions. [2020-10-16 06:00:54,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 06:00:54,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 744 transitions. [2020-10-16 06:00:54,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 06:00:54,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 06:00:54,286 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 06:00:54,286 INFO L185 Difference]: Start difference. First operand has 48 places, 40 transitions, 216 flow. Second operand 6 states and 744 transitions. [2020-10-16 06:00:54,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 92 transitions, 609 flow [2020-10-16 06:00:54,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 92 transitions, 568 flow, removed 8 selfloop flow, removed 2 redundant places. [2020-10-16 06:00:54,423 INFO L241 Difference]: Finished difference. Result has 54 places, 55 transitions, 378 flow [2020-10-16 06:00:54,423 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=378, PETRI_PLACES=54, PETRI_TRANSITIONS=55} [2020-10-16 06:00:54,423 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 15 predicate places. [2020-10-16 06:00:54,423 INFO L481 AbstractCegarLoop]: Abstraction has has 54 places, 55 transitions, 378 flow [2020-10-16 06:00:54,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 06:00:54,424 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 06:00:54,424 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 06:00:54,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-16 06:00:54,424 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 06:00:54,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 06:00:54,424 INFO L82 PathProgramCache]: Analyzing trace with hash 323960811, now seen corresponding path program 1 times [2020-10-16 06:00:54,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 06:00:54,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702991826] [2020-10-16 06:00:54,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 06:00:54,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 06:00:54,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 06:00:54,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702991826] [2020-10-16 06:00:54,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365094597] [2020-10-16 06:00:54,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 06:00:54,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 06:00:54,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 06:00:54,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 06:00:54,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 06:00:54,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 06:00:54,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 06:00:54,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081228306] [2020-10-16 06:00:54,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 06:00:54,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 06:00:54,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 06:00:54,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-16 06:00:54,651 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 185 [2020-10-16 06:00:54,652 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 55 transitions, 378 flow. Second operand 12 states. [2020-10-16 06:00:54,652 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 06:00:54,653 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 185 [2020-10-16 06:00:54,653 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 06:00:58,234 INFO L129 PetriNetUnfolder]: 25758/34987 cut-off events. [2020-10-16 06:00:58,235 INFO L130 PetriNetUnfolder]: For 32543/32543 co-relation queries the response was YES. [2020-10-16 06:00:58,502 INFO L80 FinitePrefix]: Finished finitePrefix Result has 121474 conditions, 34987 events. 25758/34987 cut-off events. For 32543/32543 co-relation queries the response was YES. Maximal size of possible extension queue 3461. Compared 251257 event pairs, 3572 based on Foata normal form. 107/31691 useless extension candidates. Maximal degree in co-relation 121452. Up to 12942 conditions per place. [2020-10-16 06:00:58,692 INFO L132 encePairwiseOnDemand]: 176/185 looper letters, 101 selfloop transitions, 47 changer transitions 0/156 dead transitions. [2020-10-16 06:00:58,693 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 156 transitions, 1066 flow [2020-10-16 06:00:58,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 06:00:58,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 06:00:58,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1574 transitions. [2020-10-16 06:00:58,695 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6544698544698545 [2020-10-16 06:00:58,695 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1574 transitions. [2020-10-16 06:00:58,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1574 transitions. [2020-10-16 06:00:58,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 06:00:58,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1574 transitions. [2020-10-16 06:00:58,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 06:00:58,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 06:00:58,698 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 06:00:58,699 INFO L185 Difference]: Start difference. First operand has 54 places, 55 transitions, 378 flow. Second operand 13 states and 1574 transitions. [2020-10-16 06:00:58,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 156 transitions, 1066 flow [2020-10-16 06:01:01,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 156 transitions, 1030 flow, removed 14 selfloop flow, removed 1 redundant places. [2020-10-16 06:01:01,313 INFO L241 Difference]: Finished difference. Result has 68 places, 71 transitions, 604 flow [2020-10-16 06:01:01,314 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=604, PETRI_PLACES=68, PETRI_TRANSITIONS=71} [2020-10-16 06:01:01,314 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 29 predicate places. [2020-10-16 06:01:01,314 INFO L481 AbstractCegarLoop]: Abstraction has has 68 places, 71 transitions, 604 flow [2020-10-16 06:01:01,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 06:01:01,314 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 06:01:01,315 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 06:01:01,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 06:01:01,522 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 06:01:01,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 06:01:01,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1313409279, now seen corresponding path program 2 times [2020-10-16 06:01:01,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 06:01:01,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180675127] [2020-10-16 06:01:01,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 06:01:01,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 06:01:01,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 06:01:01,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180675127] [2020-10-16 06:01:01,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 06:01:01,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 06:01:01,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579012670] [2020-10-16 06:01:01,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 06:01:01,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 06:01:01,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 06:01:01,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 06:01:01,587 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 185 [2020-10-16 06:01:01,588 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 71 transitions, 604 flow. Second operand 7 states. [2020-10-16 06:01:01,588 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 06:01:01,588 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 185 [2020-10-16 06:01:01,588 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 06:01:06,096 INFO L129 PetriNetUnfolder]: 27412/37431 cut-off events. [2020-10-16 06:01:06,097 INFO L130 PetriNetUnfolder]: For 60133/60133 co-relation queries the response was YES. [2020-10-16 06:01:06,404 INFO L80 FinitePrefix]: Finished finitePrefix Result has 145813 conditions, 37431 events. 27412/37431 cut-off events. For 60133/60133 co-relation queries the response was YES. Maximal size of possible extension queue 3770. Compared 274003 event pairs, 3717 based on Foata normal form. 107/33822 useless extension candidates. Maximal degree in co-relation 145787. Up to 11975 conditions per place. [2020-10-16 06:01:06,606 INFO L132 encePairwiseOnDemand]: 176/185 looper letters, 105 selfloop transitions, 54 changer transitions 0/167 dead transitions. [2020-10-16 06:01:06,607 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 167 transitions, 1319 flow [2020-10-16 06:01:06,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 06:01:06,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 06:01:06,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1574 transitions. [2020-10-16 06:01:06,610 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6544698544698545 [2020-10-16 06:01:06,611 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1574 transitions. [2020-10-16 06:01:06,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1574 transitions. [2020-10-16 06:01:06,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 06:01:06,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1574 transitions. [2020-10-16 06:01:06,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 06:01:06,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 06:01:06,617 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 06:01:06,617 INFO L185 Difference]: Start difference. First operand has 68 places, 71 transitions, 604 flow. Second operand 13 states and 1574 transitions. [2020-10-16 06:01:06,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 167 transitions, 1319 flow [2020-10-16 06:01:14,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 167 transitions, 1214 flow, removed 10 selfloop flow, removed 7 redundant places. [2020-10-16 06:01:14,086 INFO L241 Difference]: Finished difference. Result has 76 places, 83 transitions, 759 flow [2020-10-16 06:01:14,087 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=759, PETRI_PLACES=76, PETRI_TRANSITIONS=83} [2020-10-16 06:01:14,087 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 37 predicate places. [2020-10-16 06:01:14,087 INFO L481 AbstractCegarLoop]: Abstraction has has 76 places, 83 transitions, 759 flow [2020-10-16 06:01:14,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 06:01:14,087 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 06:01:14,087 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 06:01:14,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-16 06:01:14,088 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 06:01:14,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 06:01:14,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1064498480, now seen corresponding path program 1 times [2020-10-16 06:01:14,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 06:01:14,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491722869] [2020-10-16 06:01:14,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 06:01:14,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 06:01:14,133 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 06:01:14,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491722869] [2020-10-16 06:01:14,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 06:01:14,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 06:01:14,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159046568] [2020-10-16 06:01:14,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 06:01:14,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 06:01:14,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 06:01:14,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 06:01:14,137 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 185 [2020-10-16 06:01:14,138 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 83 transitions, 759 flow. Second operand 5 states. [2020-10-16 06:01:14,138 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 06:01:14,138 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 185 [2020-10-16 06:01:14,138 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 06:01:23,988 INFO L129 PetriNetUnfolder]: 42399/59055 cut-off events. [2020-10-16 06:01:23,989 INFO L130 PetriNetUnfolder]: For 161057/161063 co-relation queries the response was YES. [2020-10-16 06:01:24,504 INFO L80 FinitePrefix]: Finished finitePrefix Result has 255881 conditions, 59055 events. 42399/59055 cut-off events. For 161057/161063 co-relation queries the response was YES. Maximal size of possible extension queue 6543. Compared 473185 event pairs, 6895 based on Foata normal form. 856/53802 useless extension candidates. Maximal degree in co-relation 255853. Up to 30189 conditions per place. [2020-10-16 06:01:24,850 INFO L132 encePairwiseOnDemand]: 177/185 looper letters, 121 selfloop transitions, 49 changer transitions 0/179 dead transitions. [2020-10-16 06:01:24,850 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 179 transitions, 1941 flow [2020-10-16 06:01:24,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 06:01:24,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 06:01:24,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 738 transitions. [2020-10-16 06:01:24,852 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6648648648648648 [2020-10-16 06:01:24,853 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 738 transitions. [2020-10-16 06:01:24,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 738 transitions. [2020-10-16 06:01:24,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 06:01:24,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 738 transitions. [2020-10-16 06:01:24,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 06:01:24,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 06:01:24,855 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 06:01:24,855 INFO L185 Difference]: Start difference. First operand has 76 places, 83 transitions, 759 flow. Second operand 6 states and 738 transitions. [2020-10-16 06:01:24,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 179 transitions, 1941 flow [2020-10-16 06:01:37,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 179 transitions, 1718 flow, removed 22 selfloop flow, removed 9 redundant places. [2020-10-16 06:01:37,970 INFO L241 Difference]: Finished difference. Result has 75 places, 115 transitions, 1155 flow [2020-10-16 06:01:37,971 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1155, PETRI_PLACES=75, PETRI_TRANSITIONS=115} [2020-10-16 06:01:37,971 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 36 predicate places. [2020-10-16 06:01:37,971 INFO L481 AbstractCegarLoop]: Abstraction has has 75 places, 115 transitions, 1155 flow [2020-10-16 06:01:37,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 06:01:37,971 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 06:01:37,971 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 06:01:37,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-16 06:01:37,972 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 06:01:37,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 06:01:37,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1896427507, now seen corresponding path program 1 times [2020-10-16 06:01:37,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 06:01:37,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24505524] [2020-10-16 06:01:37,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 06:01:37,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 06:01:38,034 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 06:01:38,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24505524] [2020-10-16 06:01:38,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934549714] [2020-10-16 06:01:38,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 06:01:38,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 06:01:38,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 06:01:38,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 06:01:38,202 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 06:01:38,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 06:01:38,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 06:01:38,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424300102] [2020-10-16 06:01:38,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 06:01:38,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 06:01:38,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 06:01:38,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-16 06:01:38,205 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 185 [2020-10-16 06:01:38,207 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 115 transitions, 1155 flow. Second operand 12 states. [2020-10-16 06:01:38,207 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 06:01:38,207 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 185 [2020-10-16 06:01:38,207 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 06:01:44,561 INFO L129 PetriNetUnfolder]: 45547/63826 cut-off events. [2020-10-16 06:01:44,561 INFO L130 PetriNetUnfolder]: For 212873/212879 co-relation queries the response was YES. [2020-10-16 06:01:44,946 INFO L80 FinitePrefix]: Finished finitePrefix Result has 294881 conditions, 63826 events. 45547/63826 cut-off events. For 212873/212879 co-relation queries the response was YES. Maximal size of possible extension queue 7232. Compared 522165 event pairs, 6275 based on Foata normal form. 233/57404 useless extension candidates. Maximal degree in co-relation 294850. Up to 20346 conditions per place. [2020-10-16 06:01:45,181 INFO L132 encePairwiseOnDemand]: 176/185 looper letters, 142 selfloop transitions, 97 changer transitions 0/247 dead transitions. [2020-10-16 06:01:45,181 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 247 transitions, 2533 flow [2020-10-16 06:01:45,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 06:01:45,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 06:01:45,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1563 transitions. [2020-10-16 06:01:45,183 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6498960498960499 [2020-10-16 06:01:45,183 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1563 transitions. [2020-10-16 06:01:45,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1563 transitions. [2020-10-16 06:01:45,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 06:01:45,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1563 transitions. [2020-10-16 06:01:45,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 06:01:45,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 06:01:45,185 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 06:01:45,185 INFO L185 Difference]: Start difference. First operand has 75 places, 115 transitions, 1155 flow. Second operand 13 states and 1563 transitions. [2020-10-16 06:01:45,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 247 transitions, 2533 flow [2020-10-16 06:02:01,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 247 transitions, 2444 flow, removed 38 selfloop flow, removed 1 redundant places. [2020-10-16 06:02:01,593 INFO L241 Difference]: Finished difference. Result has 89 places, 146 transitions, 1704 flow [2020-10-16 06:02:01,593 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=1090, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1704, PETRI_PLACES=89, PETRI_TRANSITIONS=146} [2020-10-16 06:02:01,593 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 50 predicate places. [2020-10-16 06:02:01,593 INFO L481 AbstractCegarLoop]: Abstraction has has 89 places, 146 transitions, 1704 flow [2020-10-16 06:02:01,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 06:02:01,594 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 06:02:01,594 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 06:02:01,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-16 06:02:01,795 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 06:02:01,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 06:02:01,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1954579539, now seen corresponding path program 1 times [2020-10-16 06:02:01,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 06:02:01,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057396971] [2020-10-16 06:02:01,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 06:02:01,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 06:02:01,851 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 06:02:01,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057396971] [2020-10-16 06:02:01,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573578157] [2020-10-16 06:02:01,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 06:02:01,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 06:02:01,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 06:02:01,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 06:02:02,031 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 06:02:02,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 06:02:02,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 06:02:02,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264929920] [2020-10-16 06:02:02,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 06:02:02,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 06:02:02,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 06:02:02,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-16 06:02:02,038 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 185 [2020-10-16 06:02:02,039 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 146 transitions, 1704 flow. Second operand 12 states. [2020-10-16 06:02:02,039 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 06:02:02,039 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 185 [2020-10-16 06:02:02,040 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 06:02:09,941 INFO L129 PetriNetUnfolder]: 48388/68199 cut-off events. [2020-10-16 06:02:09,941 INFO L130 PetriNetUnfolder]: For 314101/314101 co-relation queries the response was YES. [2020-10-16 06:02:10,417 INFO L80 FinitePrefix]: Finished finitePrefix Result has 338405 conditions, 68199 events. 48388/68199 cut-off events. For 314101/314101 co-relation queries the response was YES. Maximal size of possible extension queue 7871. Compared 568376 event pairs, 6048 based on Foata normal form. 227/61266 useless extension candidates. Maximal degree in co-relation 338370. Up to 18936 conditions per place. [2020-10-16 06:02:10,688 INFO L132 encePairwiseOnDemand]: 176/185 looper letters, 168 selfloop transitions, 110 changer transitions 0/286 dead transitions. [2020-10-16 06:02:10,688 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 286 transitions, 3342 flow [2020-10-16 06:02:10,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 06:02:10,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 06:02:10,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1577 transitions. [2020-10-16 06:02:10,690 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6557172557172557 [2020-10-16 06:02:10,690 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1577 transitions. [2020-10-16 06:02:10,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1577 transitions. [2020-10-16 06:02:10,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 06:02:10,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1577 transitions. [2020-10-16 06:02:10,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 06:02:10,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 06:02:10,693 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 06:02:10,693 INFO L185 Difference]: Start difference. First operand has 89 places, 146 transitions, 1704 flow. Second operand 13 states and 1577 transitions. [2020-10-16 06:02:10,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 286 transitions, 3342 flow [2020-10-16 06:02:44,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 286 transitions, 3227 flow, removed 36 selfloop flow, removed 3 redundant places. [2020-10-16 06:02:44,455 INFO L241 Difference]: Finished difference. Result has 101 places, 181 transitions, 2342 flow [2020-10-16 06:02:44,455 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=1619, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2342, PETRI_PLACES=101, PETRI_TRANSITIONS=181} [2020-10-16 06:02:44,456 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 62 predicate places. [2020-10-16 06:02:44,456 INFO L481 AbstractCegarLoop]: Abstraction has has 101 places, 181 transitions, 2342 flow [2020-10-16 06:02:44,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 06:02:44,456 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 06:02:44,456 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 06:02:44,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-10-16 06:02:44,670 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 06:02:44,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 06:02:44,671 INFO L82 PathProgramCache]: Analyzing trace with hash 780837277, now seen corresponding path program 2 times [2020-10-16 06:02:44,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 06:02:44,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181297665] [2020-10-16 06:02:44,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 06:02:44,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 06:02:44,718 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 06:02:44,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181297665] [2020-10-16 06:02:44,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 06:02:44,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 06:02:44,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868323442] [2020-10-16 06:02:44,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 06:02:44,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 06:02:44,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 06:02:44,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 06:02:44,721 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 185 [2020-10-16 06:02:44,721 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 181 transitions, 2342 flow. Second operand 7 states. [2020-10-16 06:02:44,721 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 06:02:44,721 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 185 [2020-10-16 06:02:44,721 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 06:02:54,317 INFO L129 PetriNetUnfolder]: 50681/71686 cut-off events. [2020-10-16 06:02:54,317 INFO L130 PetriNetUnfolder]: For 413774/413774 co-relation queries the response was YES. [2020-10-16 06:02:54,877 INFO L80 FinitePrefix]: Finished finitePrefix Result has 383881 conditions, 71686 events. 50681/71686 cut-off events. For 413774/413774 co-relation queries the response was YES. Maximal size of possible extension queue 8401. Compared 605472 event pairs, 6363 based on Foata normal form. 175/64277 useless extension candidates. Maximal degree in co-relation 383843. Up to 19386 conditions per place. [2020-10-16 06:02:55,169 INFO L132 encePairwiseOnDemand]: 176/185 looper letters, 177 selfloop transitions, 124 changer transitions 0/309 dead transitions. [2020-10-16 06:02:55,169 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 309 transitions, 3914 flow [2020-10-16 06:02:55,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 06:02:55,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 06:02:55,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1577 transitions. [2020-10-16 06:02:55,171 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6557172557172557 [2020-10-16 06:02:55,171 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1577 transitions. [2020-10-16 06:02:55,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1577 transitions. [2020-10-16 06:02:55,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 06:02:55,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1577 transitions. [2020-10-16 06:02:55,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 06:02:55,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 06:02:55,174 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 06:02:55,174 INFO L185 Difference]: Start difference. First operand has 101 places, 181 transitions, 2342 flow. Second operand 13 states and 1577 transitions. [2020-10-16 06:02:55,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 309 transitions, 3914 flow [2020-10-16 06:03:50,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 309 transitions, 3850 flow, removed 29 selfloop flow, removed 1 redundant places. [2020-10-16 06:03:50,114 INFO L241 Difference]: Finished difference. Result has 115 places, 204 transitions, 2919 flow [2020-10-16 06:03:50,115 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=2284, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2919, PETRI_PLACES=115, PETRI_TRANSITIONS=204} [2020-10-16 06:03:50,115 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 76 predicate places. [2020-10-16 06:03:50,115 INFO L481 AbstractCegarLoop]: Abstraction has has 115 places, 204 transitions, 2919 flow [2020-10-16 06:03:50,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 06:03:50,115 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 06:03:50,115 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 06:03:50,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-16 06:03:50,115 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 06:03:50,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 06:03:50,115 INFO L82 PathProgramCache]: Analyzing trace with hash 780840129, now seen corresponding path program 2 times [2020-10-16 06:03:50,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 06:03:50,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887116083] [2020-10-16 06:03:50,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 06:03:50,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 06:03:50,159 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 06:03:50,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887116083] [2020-10-16 06:03:50,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 06:03:50,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 06:03:50,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130791873] [2020-10-16 06:03:50,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 06:03:50,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 06:03:50,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 06:03:50,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 06:03:50,163 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 185 [2020-10-16 06:03:50,164 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 204 transitions, 2919 flow. Second operand 7 states. [2020-10-16 06:03:50,164 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 06:03:50,164 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 185 [2020-10-16 06:03:50,164 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 06:03:59,621 INFO L129 PetriNetUnfolder]: 53510/76037 cut-off events. [2020-10-16 06:03:59,621 INFO L130 PetriNetUnfolder]: For 545023/545029 co-relation queries the response was YES. [2020-10-16 06:04:00,181 INFO L80 FinitePrefix]: Finished finitePrefix Result has 435060 conditions, 76037 events. 53510/76037 cut-off events. For 545023/545029 co-relation queries the response was YES. Maximal size of possible extension queue 9094. Compared 651679 event pairs, 6771 based on Foata normal form. 233/68117 useless extension candidates. Maximal degree in co-relation 435018. Up to 20686 conditions per place. [2020-10-16 06:04:00,479 INFO L132 encePairwiseOnDemand]: 176/185 looper letters, 183 selfloop transitions, 140 changer transitions 0/331 dead transitions. [2020-10-16 06:04:00,479 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 331 transitions, 4669 flow [2020-10-16 06:04:00,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 06:04:00,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 06:04:00,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1563 transitions. [2020-10-16 06:04:00,481 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6498960498960499 [2020-10-16 06:04:00,481 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1563 transitions. [2020-10-16 06:04:00,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1563 transitions. [2020-10-16 06:04:00,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 06:04:00,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1563 transitions. [2020-10-16 06:04:00,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 06:04:00,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 06:04:00,484 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 06:04:00,484 INFO L185 Difference]: Start difference. First operand has 115 places, 204 transitions, 2919 flow. Second operand 13 states and 1563 transitions. [2020-10-16 06:04:00,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 331 transitions, 4669 flow [2020-10-16 06:05:07,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 331 transitions, 4363 flow, removed 41 selfloop flow, removed 8 redundant places. [2020-10-16 06:05:07,109 INFO L241 Difference]: Finished difference. Result has 122 places, 233 transitions, 3462 flow [2020-10-16 06:05:07,109 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=2681, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3462, PETRI_PLACES=122, PETRI_TRANSITIONS=233} [2020-10-16 06:05:07,109 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 83 predicate places. [2020-10-16 06:05:07,109 INFO L481 AbstractCegarLoop]: Abstraction has has 122 places, 233 transitions, 3462 flow [2020-10-16 06:05:07,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 06:05:07,109 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 06:05:07,110 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 06:05:07,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-16 06:05:07,110 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 06:05:07,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 06:05:07,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1561506739, now seen corresponding path program 1 times [2020-10-16 06:05:07,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 06:05:07,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907006495] [2020-10-16 06:05:07,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 06:05:07,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 06:05:07,142 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 06:05:07,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907006495] [2020-10-16 06:05:07,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 06:05:07,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 06:05:07,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003894654] [2020-10-16 06:05:07,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 06:05:07,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 06:05:07,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 06:05:07,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 06:05:07,145 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 185 [2020-10-16 06:05:07,145 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 233 transitions, 3462 flow. Second operand 5 states. [2020-10-16 06:05:07,145 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 06:05:07,145 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 185 [2020-10-16 06:05:07,146 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 06:05:22,891 INFO L129 PetriNetUnfolder]: 80365/116510 cut-off events. [2020-10-16 06:05:22,892 INFO L130 PetriNetUnfolder]: For 1107269/1107308 co-relation queries the response was YES. [2020-10-16 06:05:23,801 INFO L80 FinitePrefix]: Finished finitePrefix Result has 706460 conditions, 116510 events. 80365/116510 cut-off events. For 1107269/1107308 co-relation queries the response was YES. Maximal size of possible extension queue 14934. Compared 1084593 event pairs, 12119 based on Foata normal form. 1656/105260 useless extension candidates. Maximal degree in co-relation 706415. Up to 62044 conditions per place. [2020-10-16 06:05:24,256 INFO L132 encePairwiseOnDemand]: 177/185 looper letters, 370 selfloop transitions, 106 changer transitions 0/485 dead transitions. [2020-10-16 06:05:24,257 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 485 transitions, 8217 flow [2020-10-16 06:05:24,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 06:05:24,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 06:05:24,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 738 transitions. [2020-10-16 06:05:24,258 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6648648648648648 [2020-10-16 06:05:24,258 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 738 transitions. [2020-10-16 06:05:24,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 738 transitions. [2020-10-16 06:05:24,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 06:05:24,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 738 transitions. [2020-10-16 06:05:24,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 06:05:24,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 06:05:24,260 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 06:05:24,260 INFO L185 Difference]: Start difference. First operand has 122 places, 233 transitions, 3462 flow. Second operand 6 states and 738 transitions. [2020-10-16 06:05:24,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 485 transitions, 8217 flow [2020-10-16 06:08:58,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 485 transitions, 7867 flow, removed 60 selfloop flow, removed 7 redundant places. [2020-10-16 06:08:58,682 INFO L241 Difference]: Finished difference. Result has 123 places, 310 transitions, 5004 flow [2020-10-16 06:08:58,683 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=3281, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5004, PETRI_PLACES=123, PETRI_TRANSITIONS=310} [2020-10-16 06:08:58,683 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 84 predicate places. [2020-10-16 06:08:58,683 INFO L481 AbstractCegarLoop]: Abstraction has has 123 places, 310 transitions, 5004 flow [2020-10-16 06:08:58,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 06:08:58,684 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 06:08:58,684 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 06:08:58,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-16 06:08:58,684 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 06:08:58,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 06:08:58,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1022812594, now seen corresponding path program 1 times [2020-10-16 06:08:58,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 06:08:58,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308821879] [2020-10-16 06:08:58,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 06:08:58,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 06:08:58,748 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 06:08:58,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308821879] [2020-10-16 06:08:58,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764834323] [2020-10-16 06:08:58,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 06:08:58,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 06:08:58,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 06:08:58,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 06:08:58,940 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 06:08:58,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 06:08:58,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 06:08:58,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931793924] [2020-10-16 06:08:58,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 06:08:58,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 06:08:58,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 06:08:58,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 06:08:58,943 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 185 [2020-10-16 06:08:58,944 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 310 transitions, 5004 flow. Second operand 16 states. [2020-10-16 06:08:58,944 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 06:08:58,944 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 185 [2020-10-16 06:08:58,944 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 06:09:15,806 INFO L129 PetriNetUnfolder]: 80442/116626 cut-off events. [2020-10-16 06:09:15,806 INFO L130 PetriNetUnfolder]: For 1194118/1194118 co-relation queries the response was YES. [2020-10-16 06:09:16,829 INFO L80 FinitePrefix]: Finished finitePrefix Result has 745109 conditions, 116626 events. 80442/116626 cut-off events. For 1194118/1194118 co-relation queries the response was YES. Maximal size of possible extension queue 15075. Compared 1099618 event pairs, 9598 based on Foata normal form. 57/103793 useless extension candidates. Maximal degree in co-relation 745061. Up to 31549 conditions per place. [2020-10-16 06:09:17,314 INFO L132 encePairwiseOnDemand]: 175/185 looper letters, 272 selfloop transitions, 297 changer transitions 0/576 dead transitions. [2020-10-16 06:09:17,314 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 576 transitions, 8806 flow [2020-10-16 06:09:17,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 06:09:17,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 06:09:17,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3418 transitions. [2020-10-16 06:09:17,318 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6370922646784716 [2020-10-16 06:09:17,318 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3418 transitions. [2020-10-16 06:09:17,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3418 transitions. [2020-10-16 06:09:17,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 06:09:17,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3418 transitions. [2020-10-16 06:09:17,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 06:09:17,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 06:09:17,326 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 06:09:17,326 INFO L185 Difference]: Start difference. First operand has 123 places, 310 transitions, 5004 flow. Second operand 29 states and 3418 transitions. [2020-10-16 06:09:17,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 576 transitions, 8806 flow Received shutdown request... [2020-10-16 06:11:24,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 06:11:24,151 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-16 06:11:24,155 WARN L235 ceAbstractionStarter]: Timeout [2020-10-16 06:11:24,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 06:11:24 BasicIcfg [2020-10-16 06:11:24,156 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 06:11:24,157 INFO L168 Benchmark]: Toolchain (without parser) took 815176.30 ms. Allocated memory was 250.6 MB in the beginning and 5.1 GB in the end (delta: 4.8 GB). Free memory was 206.0 MB in the beginning and 2.5 GB in the end (delta: -2.3 GB). Peak memory consumption was 6.6 GB. Max. memory is 14.2 GB. [2020-10-16 06:11:24,157 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 250.6 MB. Free memory is still 227.0 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 06:11:24,158 INFO L168 Benchmark]: CACSL2BoogieTranslator took 818.87 ms. Allocated memory was 250.6 MB in the beginning and 314.0 MB in the end (delta: 63.4 MB). Free memory was 206.0 MB in the beginning and 270.0 MB in the end (delta: -64.0 MB). Peak memory consumption was 29.3 MB. Max. memory is 14.2 GB. [2020-10-16 06:11:24,158 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.82 ms. Allocated memory is still 314.0 MB. Free memory was 270.0 MB in the beginning and 267.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 06:11:24,158 INFO L168 Benchmark]: Boogie Preprocessor took 29.85 ms. Allocated memory is still 314.0 MB. Free memory was 267.4 MB in the beginning and 264.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 06:11:24,159 INFO L168 Benchmark]: RCFGBuilder took 437.98 ms. Allocated memory is still 314.0 MB. Free memory was 264.9 MB in the beginning and 245.6 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 14.2 GB. [2020-10-16 06:11:24,159 INFO L168 Benchmark]: TraceAbstraction took 813832.82 ms. Allocated memory was 314.0 MB in the beginning and 5.1 GB in the end (delta: 4.8 GB). Free memory was 245.6 MB in the beginning and 2.5 GB in the end (delta: -2.2 GB). Peak memory consumption was 6.6 GB. Max. memory is 14.2 GB. [2020-10-16 06:11:24,162 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 250.6 MB. Free memory is still 227.0 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 818.87 ms. Allocated memory was 250.6 MB in the beginning and 314.0 MB in the end (delta: 63.4 MB). Free memory was 206.0 MB in the beginning and 270.0 MB in the end (delta: -64.0 MB). Peak memory consumption was 29.3 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 50.82 ms. Allocated memory is still 314.0 MB. Free memory was 270.0 MB in the beginning and 267.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 29.85 ms. Allocated memory is still 314.0 MB. Free memory was 267.4 MB in the beginning and 264.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 437.98 ms. Allocated memory is still 314.0 MB. Free memory was 264.9 MB in the beginning and 245.6 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 14.2 GB. * TraceAbstraction took 813832.82 ms. Allocated memory was 314.0 MB in the beginning and 5.1 GB in the end (delta: 4.8 GB). Free memory was 245.6 MB in the beginning and 2.5 GB in the end (delta: -2.2 GB). Peak memory consumption was 6.6 GB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 363 VarBasedMoverChecksPositive, 3 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 3 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 3 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.8s, 60 PlacesBefore, 17 PlacesAfterwards, 57 TransitionsBefore, 11 TransitionsAfterwards, 592 CoEnabledTransitionPairs, 6 FixpointIterations, 21 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 3 ConcurrentYvCompositions, 3 ChoiceCompositions, 54 TotalNumberOfCompositions, 576 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 568 VarBasedMoverChecksPositive, 11 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 11 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 32 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.7s, 68 PlacesBefore, 24 PlacesAfterwards, 63 TransitionsBefore, 16 TransitionsAfterwards, 920 CoEnabledTransitionPairs, 6 FixpointIterations, 24 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 3 ConcurrentYvCompositions, 3 ChoiceCompositions, 57 TotalNumberOfCompositions, 1184 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 808 VarBasedMoverChecksPositive, 16 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 16 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 49 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 76 PlacesBefore, 29 PlacesAfterwards, 69 TransitionsBefore, 19 TransitionsAfterwards, 1308 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 3 ConcurrentYvCompositions, 3 ChoiceCompositions, 57 TotalNumberOfCompositions, 1815 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 987 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 24 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 42 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.5s, 84 PlacesBefore, 34 PlacesAfterwards, 75 TransitionsBefore, 22 TransitionsAfterwards, 1756 CoEnabledTransitionPairs, 5 FixpointIterations, 22 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 3 ConcurrentYvCompositions, 3 ChoiceCompositions, 64 TotalNumberOfCompositions, 2872 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1265 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 33 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 83 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.9s, 92 PlacesBefore, 39 PlacesAfterwards, 81 TransitionsBefore, 25 TransitionsAfterwards, 2264 CoEnabledTransitionPairs, 5 FixpointIterations, 22 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 3 ConcurrentYvCompositions, 3 ChoiceCompositions, 63 TotalNumberOfCompositions, 3488 MoverChecksTotal - TimeoutResultAtElement [Line: 678]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 678). Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 55 locations, 1 error locations. Started 5 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 813.4s, OverallIterations: 44, TraceHistogramMax: 5, AutomataDifference: 798.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.6s, HoareTripleCheckerStatistics: 447 SDtfs, 3456 SDslu, 587 SDs, 0 SdLazy, 6746 SolverSat, 455 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 609 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 513 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2454 ImplicationChecksByTransitivity, 5.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7869occurred in iteration=17, 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: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 771 NumberOfCodeBlocks, 771 NumberOfCodeBlocksAsserted, 53 NumberOfCheckSat, 663 ConstructedInterpolants, 0 QuantifiedInterpolants, 62523 SizeOfPredicates, 40 NumberOfNonLiveVariables, 910 ConjunctsInSsa, 67 ConjunctsInUnsatCore, 49 InterpolantComputations, 31 PerfectInterpolantSequences, 224/254 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 could not prove your program: Timeout Completed graceful shutdown