/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-lit/fkp2013_variant-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 01:47:54,353 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 01:47:54,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 01:47:54,380 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-16 01:47:54,390 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 01:47:54,391 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 01:47:54,392 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 01:47:54,393 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 01:47:54,394 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 01:47:54,395 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 01:47:54,397 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 01:47:54,399 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 01:47:54,400 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 01:47:54,401 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 01:47:54,404 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 01:47:54,405 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 01:47:54,407 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 01:47:54,415 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 01:47:54,416 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 01:47:54,416 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 01:47:54,417 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2020-10-16 01:47:54,439 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 01:47:54,439 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 01:47:54,440 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 01:47:54,441 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 01:47:54,441 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 01:47:54,441 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 01:47:54,441 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 01:47:54,441 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 01:47:54,442 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 01:47:54,442 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 01:47:54,442 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 01:47:54,442 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 01:47:54,442 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 01:47:54,442 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 01:47:54,443 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 01:47:54,443 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 01:47:54,443 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 01:47:54,443 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 01:47:54,443 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 01:47:54,444 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 01:47:54,444 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 01:47:54,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:47:54,444 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 01:47:54,444 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 01:47:54,445 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 01:47:54,445 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 01:47:54,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 01:47:54,445 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 01:47:54,445 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 01:47:54,768 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 01:47:54,779 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 01:47:54,783 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 01:47:54,784 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 01:47:54,785 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 01:47:54,785 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/fkp2013_variant-1.i [2020-10-16 01:47:54,845 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca7494608/4b46d2ed882b44cebd53f6afe00d86e5/FLAG63e995cd6 [2020-10-16 01:47:55,452 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 01:47:55,453 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/fkp2013_variant-1.i [2020-10-16 01:47:55,469 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca7494608/4b46d2ed882b44cebd53f6afe00d86e5/FLAG63e995cd6 [2020-10-16 01:47:55,692 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca7494608/4b46d2ed882b44cebd53f6afe00d86e5 [2020-10-16 01:47:55,706 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 01:47:55,708 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 01:47:55,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 01:47:55,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 01:47:55,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 01:47:55,716 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:47:55" (1/1) ... [2020-10-16 01:47:55,719 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7246eda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:55, skipping insertion in model container [2020-10-16 01:47:55,720 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:47:55" (1/1) ... [2020-10-16 01:47:55,730 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 01:47:55,788 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 01:47:56,251 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:47:56,261 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 01:47:56,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:47:56,379 INFO L208 MainTranslator]: Completed translation [2020-10-16 01:47:56,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:56 WrapperNode [2020-10-16 01:47:56,379 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 01:47:56,380 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 01:47:56,380 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 01:47:56,380 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 01:47:56,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:56" (1/1) ... [2020-10-16 01:47:56,405 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:56" (1/1) ... [2020-10-16 01:47:56,428 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 01:47:56,428 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 01:47:56,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 01:47:56,428 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 01:47:56,438 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:56" (1/1) ... [2020-10-16 01:47:56,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:56" (1/1) ... [2020-10-16 01:47:56,441 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:56" (1/1) ... [2020-10-16 01:47:56,441 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:56" (1/1) ... [2020-10-16 01:47:56,447 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:56" (1/1) ... [2020-10-16 01:47:56,451 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:56" (1/1) ... [2020-10-16 01:47:56,453 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:56" (1/1) ... [2020-10-16 01:47:56,456 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 01:47:56,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 01:47:56,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 01:47:56,457 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 01:47:56,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:47:56,526 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-16 01:47:56,526 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-16 01:47:56,526 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-16 01:47:56,526 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-16 01:47:56,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 01:47:56,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 01:47:56,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 01:47:56,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 01:47:56,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 01:47:56,529 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 01:47:56,830 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 01:47:56,830 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-16 01:47:56,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:47:56 BoogieIcfgContainer [2020-10-16 01:47:56,832 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 01:47:56,834 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 01:47:56,834 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 01:47:56,840 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 01:47:56,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:47:55" (1/3) ... [2020-10-16 01:47:56,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e4816e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:47:56, skipping insertion in model container [2020-10-16 01:47:56,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:56" (2/3) ... [2020-10-16 01:47:56,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e4816e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:47:56, skipping insertion in model container [2020-10-16 01:47:56,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:47:56" (3/3) ... [2020-10-16 01:47:56,845 INFO L111 eAbstractionObserver]: Analyzing ICFG fkp2013_variant-1.i [2020-10-16 01:47:56,856 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 01:47:56,864 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 01:47:56,865 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 01:47:56,891 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,892 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,892 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,892 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,893 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,893 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,893 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,894 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,894 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,895 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,895 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,895 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,895 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,895 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,896 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,896 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,896 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,896 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,897 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,897 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,897 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,901 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,901 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,902 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,902 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,902 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,902 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,908 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,908 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,908 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,908 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,909 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,926 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 01:47:56,943 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:47:56,943 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:47:56,943 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:47:56,943 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:47:56,944 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:47:56,944 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:47:56,944 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:47:56,944 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:47:56,956 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 64 places, 61 transitions, 132 flow [2020-10-16 01:47:56,998 INFO L129 PetriNetUnfolder]: 4/71 cut-off events. [2020-10-16 01:47:56,998 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:47:57,003 INFO L80 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 71 events. 4/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 94 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 50. Up to 4 conditions per place. [2020-10-16 01:47:57,004 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 61 transitions, 132 flow [2020-10-16 01:47:57,010 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 60 transitions, 128 flow [2020-10-16 01:47:57,013 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:47:57,016 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 60 transitions, 128 flow [2020-10-16 01:47:57,019 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 63 places, 60 transitions, 128 flow [2020-10-16 01:47:57,019 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 63 places, 60 transitions, 128 flow [2020-10-16 01:47:57,043 INFO L129 PetriNetUnfolder]: 4/71 cut-off events. [2020-10-16 01:47:57,043 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:47:57,044 INFO L80 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 71 events. 4/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 97 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 50. Up to 4 conditions per place. [2020-10-16 01:47:57,047 INFO L117 LiptonReduction]: Number of co-enabled transitions 692 [2020-10-16 01:47:58,330 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2020-10-16 01:47:58,852 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2020-10-16 01:47:58,948 INFO L132 LiptonReduction]: Checked pairs total: 623 [2020-10-16 01:47:58,949 INFO L134 LiptonReduction]: Total number of compositions: 61 [2020-10-16 01:47:58,954 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1942 [2020-10-16 01:47:58,960 INFO L129 PetriNetUnfolder]: 0/3 cut-off events. [2020-10-16 01:47:58,960 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:47:58,961 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:47:58,962 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2020-10-16 01:47:58,962 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 01:47:58,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:47:58,969 INFO L82 PathProgramCache]: Analyzing trace with hash 245288, now seen corresponding path program 1 times [2020-10-16 01:47:58,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:47:58,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85045836] [2020-10-16 01:47:58,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:47:59,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:47:59,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:47:59,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85045836] [2020-10-16 01:47:59,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:47:59,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:47:59,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812993762] [2020-10-16 01:47:59,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:47:59,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:47:59,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:47:59,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:47:59,220 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 122 [2020-10-16 01:47:59,222 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 11 transitions, 30 flow. Second operand 3 states. [2020-10-16 01:47:59,222 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:47:59,222 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 122 [2020-10-16 01:47:59,224 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:47:59,264 INFO L129 PetriNetUnfolder]: 13/37 cut-off events. [2020-10-16 01:47:59,265 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:47:59,265 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 98 event pairs, 4 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 69. Up to 19 conditions per place. [2020-10-16 01:47:59,267 INFO L132 encePairwiseOnDemand]: 119/122 looper letters, 7 selfloop transitions, 2 changer transitions 0/14 dead transitions. [2020-10-16 01:47:59,267 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 14 transitions, 54 flow [2020-10-16 01:47:59,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:47:59,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:47:59,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 226 transitions. [2020-10-16 01:47:59,284 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6174863387978142 [2020-10-16 01:47:59,285 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 226 transitions. [2020-10-16 01:47:59,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 226 transitions. [2020-10-16 01:47:59,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:47:59,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 226 transitions. [2020-10-16 01:47:59,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:47:59,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:47:59,300 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:47:59,303 INFO L185 Difference]: Start difference. First operand has 17 places, 11 transitions, 30 flow. Second operand 3 states and 226 transitions. [2020-10-16 01:47:59,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 14 transitions, 54 flow [2020-10-16 01:47:59,307 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 01:47:59,309 INFO L241 Difference]: Finished difference. Result has 19 places, 11 transitions, 37 flow [2020-10-16 01:47:59,312 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, 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 01:47:59,313 INFO L342 CegarLoopForPetriNet]: 17 programPoint places, 2 predicate places. [2020-10-16 01:47:59,314 INFO L481 AbstractCegarLoop]: Abstraction has has 19 places, 11 transitions, 37 flow [2020-10-16 01:47:59,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:47:59,314 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:47:59,314 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:47:59,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 01:47:59,315 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 01:47:59,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:47:59,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1115035197, now seen corresponding path program 1 times [2020-10-16 01:47:59,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:47:59,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225520821] [2020-10-16 01:47:59,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:47:59,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:47:59,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:47:59,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225520821] [2020-10-16 01:47:59,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:47:59,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:47:59,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055108503] [2020-10-16 01:47:59,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:47:59,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:47:59,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:47:59,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:47:59,415 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 122 [2020-10-16 01:47:59,415 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 11 transitions, 37 flow. Second operand 4 states. [2020-10-16 01:47:59,415 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:47:59,415 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 122 [2020-10-16 01:47:59,416 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:47:59,451 INFO L129 PetriNetUnfolder]: 11/32 cut-off events. [2020-10-16 01:47:59,452 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2020-10-16 01:47:59,452 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 77 event pairs, 4 based on Foata normal form. 3/26 useless extension candidates. Maximal degree in co-relation 71. Up to 14 conditions per place. [2020-10-16 01:47:59,453 INFO L132 encePairwiseOnDemand]: 119/122 looper letters, 4 selfloop transitions, 2 changer transitions 2/13 dead transitions. [2020-10-16 01:47:59,453 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 13 transitions, 55 flow [2020-10-16 01:47:59,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:47:59,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:47:59,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 297 transitions. [2020-10-16 01:47:59,458 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6086065573770492 [2020-10-16 01:47:59,458 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 297 transitions. [2020-10-16 01:47:59,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 297 transitions. [2020-10-16 01:47:59,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:47:59,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 297 transitions. [2020-10-16 01:47:59,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:47:59,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:47:59,474 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:47:59,474 INFO L185 Difference]: Start difference. First operand has 19 places, 11 transitions, 37 flow. Second operand 4 states and 297 transitions. [2020-10-16 01:47:59,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 13 transitions, 55 flow [2020-10-16 01:47:59,475 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 01:47:59,476 INFO L241 Difference]: Finished difference. Result has 18 places, 9 transitions, 29 flow [2020-10-16 01:47:59,476 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, 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 01:47:59,477 INFO L342 CegarLoopForPetriNet]: 17 programPoint places, 1 predicate places. [2020-10-16 01:47:59,477 INFO L481 AbstractCegarLoop]: Abstraction has has 18 places, 9 transitions, 29 flow [2020-10-16 01:47:59,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:47:59,478 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:47:59,478 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-16 01:47:59,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 01:47:59,479 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 01:47:59,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:47:59,480 INFO L82 PathProgramCache]: Analyzing trace with hash -206369818, now seen corresponding path program 1 times [2020-10-16 01:47:59,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:47:59,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125846902] [2020-10-16 01:47:59,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:47:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 01:47:59,536 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 01:47:59,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 01:47:59,569 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 01:47:59,609 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 01:47:59,609 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 01:47:59,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 01:47:59,610 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 01:47:59,614 WARN L371 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 01:47:59,615 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-16 01:47:59,631 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,632 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,632 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,632 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,632 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,633 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,633 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,633 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,633 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,633 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,634 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,634 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,634 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,634 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,634 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,634 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,635 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,635 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,636 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,636 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,636 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,637 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,637 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,637 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,637 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,637 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,638 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,638 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,638 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,638 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,639 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,639 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,639 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,639 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,639 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,639 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,640 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,640 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,640 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,640 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,641 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,641 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,641 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,642 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,642 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,642 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,642 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,642 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,644 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,644 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,644 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,644 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,644 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,645 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,652 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,653 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,653 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,653 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,653 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,654 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,654 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,654 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,655 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,655 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,660 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-16 01:47:59,660 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:47:59,660 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:47:59,660 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:47:59,660 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:47:59,660 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:47:59,660 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:47:59,661 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:47:59,661 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:47:59,662 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 85 places, 79 transitions, 182 flow [2020-10-16 01:47:59,696 INFO L129 PetriNetUnfolder]: 5/93 cut-off events. [2020-10-16 01:47:59,696 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 01:47:59,698 INFO L80 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 93 events. 5/93 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 135 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 102. Up to 6 conditions per place. [2020-10-16 01:47:59,698 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 79 transitions, 182 flow [2020-10-16 01:47:59,700 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 67 transitions, 149 flow [2020-10-16 01:47:59,700 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:47:59,700 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 67 transitions, 149 flow [2020-10-16 01:47:59,701 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 67 transitions, 149 flow [2020-10-16 01:47:59,701 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 72 places, 67 transitions, 149 flow [2020-10-16 01:47:59,726 INFO L129 PetriNetUnfolder]: 5/93 cut-off events. [2020-10-16 01:47:59,726 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 01:47:59,728 INFO L80 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 93 events. 5/93 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 137 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 75. Up to 6 conditions per place. [2020-10-16 01:47:59,730 INFO L117 LiptonReduction]: Number of co-enabled transitions 1108 [2020-10-16 01:48:01,024 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-10-16 01:48:01,111 INFO L132 LiptonReduction]: Checked pairs total: 1464 [2020-10-16 01:48:01,111 INFO L134 LiptonReduction]: Total number of compositions: 62 [2020-10-16 01:48:01,112 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1411 [2020-10-16 01:48:01,113 INFO L129 PetriNetUnfolder]: 0/3 cut-off events. [2020-10-16 01:48:01,113 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:48:01,114 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:48:01,114 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2020-10-16 01:48:01,114 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:48:01,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:48:01,114 INFO L82 PathProgramCache]: Analyzing trace with hash 403086, now seen corresponding path program 1 times [2020-10-16 01:48:01,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:48:01,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392066146] [2020-10-16 01:48:01,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:48:01,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:01,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:48:01,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392066146] [2020-10-16 01:48:01,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:48:01,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:48:01,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652236492] [2020-10-16 01:48:01,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:48:01,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:48:01,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:48:01,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:48:01,157 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 141 [2020-10-16 01:48:01,157 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 16 transitions, 47 flow. Second operand 3 states. [2020-10-16 01:48:01,157 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:48:01,158 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 141 [2020-10-16 01:48:01,158 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:48:01,249 INFO L129 PetriNetUnfolder]: 122/218 cut-off events. [2020-10-16 01:48:01,250 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 01:48:01,251 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 999 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 01:48:01,256 INFO L132 encePairwiseOnDemand]: 137/141 looper letters, 13 selfloop transitions, 3 changer transitions 0/23 dead transitions. [2020-10-16 01:48:01,256 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 23 transitions, 93 flow [2020-10-16 01:48:01,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:48:01,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:48:01,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 278 transitions. [2020-10-16 01:48:01,262 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6572104018912529 [2020-10-16 01:48:01,262 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 278 transitions. [2020-10-16 01:48:01,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 278 transitions. [2020-10-16 01:48:01,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:48:01,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 278 transitions. [2020-10-16 01:48:01,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:48:01,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:48:01,265 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:48:01,265 INFO L185 Difference]: Start difference. First operand has 24 places, 16 transitions, 47 flow. Second operand 3 states and 278 transitions. [2020-10-16 01:48:01,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 23 transitions, 93 flow [2020-10-16 01:48:01,266 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 01:48:01,267 INFO L241 Difference]: Finished difference. Result has 26 places, 18 transitions, 63 flow [2020-10-16 01:48:01,267 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, 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 01:48:01,267 INFO L342 CegarLoopForPetriNet]: 24 programPoint places, 2 predicate places. [2020-10-16 01:48:01,267 INFO L481 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 63 flow [2020-10-16 01:48:01,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:48:01,268 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:48:01,268 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:48:01,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 01:48:01,268 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:48:01,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:48:01,268 INFO L82 PathProgramCache]: Analyzing trace with hash -928690806, now seen corresponding path program 1 times [2020-10-16 01:48:01,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:48:01,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503890666] [2020-10-16 01:48:01,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:48:01,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:01,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:48:01,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503890666] [2020-10-16 01:48:01,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:48:01,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:48:01,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16960379] [2020-10-16 01:48:01,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:48:01,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:48:01,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:48:01,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:48:01,345 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 141 [2020-10-16 01:48:01,346 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 18 transitions, 63 flow. Second operand 5 states. [2020-10-16 01:48:01,346 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:48:01,346 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 141 [2020-10-16 01:48:01,346 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:48:01,456 INFO L129 PetriNetUnfolder]: 131/265 cut-off events. [2020-10-16 01:48:01,457 INFO L130 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2020-10-16 01:48:01,457 INFO L80 FinitePrefix]: Finished finitePrefix Result has 638 conditions, 265 events. 131/265 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 1386 event pairs, 20 based on Foata normal form. 11/231 useless extension candidates. Maximal degree in co-relation 626. Up to 74 conditions per place. [2020-10-16 01:48:01,459 INFO L132 encePairwiseOnDemand]: 135/141 looper letters, 24 selfloop transitions, 10 changer transitions 1/41 dead transitions. [2020-10-16 01:48:01,459 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 41 transitions, 190 flow [2020-10-16 01:48:01,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 01:48:01,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 01:48:01,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 631 transitions. [2020-10-16 01:48:01,462 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6393110435663627 [2020-10-16 01:48:01,463 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 631 transitions. [2020-10-16 01:48:01,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 631 transitions. [2020-10-16 01:48:01,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:48:01,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 631 transitions. [2020-10-16 01:48:01,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 01:48:01,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 01:48:01,467 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 01:48:01,467 INFO L185 Difference]: Start difference. First operand has 26 places, 18 transitions, 63 flow. Second operand 7 states and 631 transitions. [2020-10-16 01:48:01,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 41 transitions, 190 flow [2020-10-16 01:48:01,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 41 transitions, 186 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:48:01,470 INFO L241 Difference]: Finished difference. Result has 36 places, 24 transitions, 127 flow [2020-10-16 01:48:01,470 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, 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=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=127, PETRI_PLACES=36, PETRI_TRANSITIONS=24} [2020-10-16 01:48:01,470 INFO L342 CegarLoopForPetriNet]: 24 programPoint places, 12 predicate places. [2020-10-16 01:48:01,470 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 24 transitions, 127 flow [2020-10-16 01:48:01,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:48:01,471 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:48:01,471 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:48:01,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 01:48:01,471 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:48:01,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:48:01,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1608038659, now seen corresponding path program 1 times [2020-10-16 01:48:01,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:48:01,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107346607] [2020-10-16 01:48:01,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:48:01,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:01,525 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 01:48:01,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107346607] [2020-10-16 01:48:01,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:48:01,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:48:01,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499329244] [2020-10-16 01:48:01,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:48:01,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:48:01,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:48:01,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:48:01,529 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 141 [2020-10-16 01:48:01,529 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 24 transitions, 127 flow. Second operand 5 states. [2020-10-16 01:48:01,530 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:48:01,530 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 141 [2020-10-16 01:48:01,530 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:48:01,691 INFO L129 PetriNetUnfolder]: 135/294 cut-off events. [2020-10-16 01:48:01,691 INFO L130 PetriNetUnfolder]: For 378/378 co-relation queries the response was YES. [2020-10-16 01:48:01,692 INFO L80 FinitePrefix]: Finished finitePrefix Result has 950 conditions, 294 events. 135/294 cut-off events. For 378/378 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 1695 event pairs, 26 based on Foata normal form. 12/253 useless extension candidates. Maximal degree in co-relation 932. Up to 79 conditions per place. [2020-10-16 01:48:01,694 INFO L132 encePairwiseOnDemand]: 135/141 looper letters, 27 selfloop transitions, 15 changer transitions 1/49 dead transitions. [2020-10-16 01:48:01,694 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 49 transitions, 323 flow [2020-10-16 01:48:01,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 01:48:01,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 01:48:01,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 626 transitions. [2020-10-16 01:48:01,697 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6342451874366768 [2020-10-16 01:48:01,698 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 626 transitions. [2020-10-16 01:48:01,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 626 transitions. [2020-10-16 01:48:01,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:48:01,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 626 transitions. [2020-10-16 01:48:01,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 01:48:01,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 01:48:01,703 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 01:48:01,703 INFO L185 Difference]: Start difference. First operand has 36 places, 24 transitions, 127 flow. Second operand 7 states and 626 transitions. [2020-10-16 01:48:01,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 49 transitions, 323 flow [2020-10-16 01:48:01,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 49 transitions, 316 flow, removed 1 selfloop flow, removed 1 redundant places. [2020-10-16 01:48:01,708 INFO L241 Difference]: Finished difference. Result has 46 places, 32 transitions, 241 flow [2020-10-16 01:48:01,708 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=241, PETRI_PLACES=46, PETRI_TRANSITIONS=32} [2020-10-16 01:48:01,709 INFO L342 CegarLoopForPetriNet]: 24 programPoint places, 22 predicate places. [2020-10-16 01:48:01,709 INFO L481 AbstractCegarLoop]: Abstraction has has 46 places, 32 transitions, 241 flow [2020-10-16 01:48:01,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:48:01,709 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:48:01,709 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-10-16 01:48:01,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 01:48:01,710 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:48:01,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:48:01,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1686823233, now seen corresponding path program 1 times [2020-10-16 01:48:01,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:48:01,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241668880] [2020-10-16 01:48:01,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:48:01,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 01:48:01,725 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 01:48:01,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 01:48:01,735 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 01:48:01,742 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 01:48:01,743 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 01:48:01,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 01:48:01,743 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 01:48:01,744 WARN L371 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 01:48:01,745 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-16 01:48:01,755 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,755 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,755 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,755 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,756 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,756 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,756 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,756 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,756 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,757 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,757 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,757 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,757 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,757 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,757 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,758 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,758 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,758 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,758 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,758 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,758 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,759 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,759 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,759 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,759 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,759 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,759 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,760 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,760 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,760 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,760 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,761 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,761 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,761 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,761 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,761 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,761 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,762 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,762 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,762 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,762 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,763 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,763 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,763 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,763 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,763 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,763 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,764 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,764 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,764 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,764 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,764 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,765 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,765 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,765 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,765 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,765 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,765 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,766 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,766 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,766 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,766 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,766 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,767 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,767 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,767 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,767 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,767 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,768 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,769 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,770 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,770 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,770 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,770 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,770 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,773 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,774 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,774 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,774 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,774 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,774 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,777 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,777 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,778 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,778 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,778 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,780 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,780 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,780 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,781 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,781 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,783 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,783 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,783 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,784 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,784 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:01,786 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-16 01:48:01,786 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:48:01,787 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:48:01,787 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:48:01,787 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:48:01,787 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:48:01,787 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:48:01,787 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:48:01,787 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:48:01,790 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 106 places, 97 transitions, 236 flow [2020-10-16 01:48:01,808 INFO L129 PetriNetUnfolder]: 6/115 cut-off events. [2020-10-16 01:48:01,808 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 01:48:01,809 INFO L80 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 115 events. 6/115 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 174 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 129. Up to 8 conditions per place. [2020-10-16 01:48:01,809 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 97 transitions, 236 flow [2020-10-16 01:48:01,811 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 74 transitions, 172 flow [2020-10-16 01:48:01,811 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:48:01,811 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 74 transitions, 172 flow [2020-10-16 01:48:01,811 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 74 transitions, 172 flow [2020-10-16 01:48:01,812 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 81 places, 74 transitions, 172 flow [2020-10-16 01:48:01,827 INFO L129 PetriNetUnfolder]: 6/115 cut-off events. [2020-10-16 01:48:01,828 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 01:48:01,829 INFO L80 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 115 events. 6/115 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 180 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 102. Up to 8 conditions per place. [2020-10-16 01:48:01,833 INFO L117 LiptonReduction]: Number of co-enabled transitions 1608 [2020-10-16 01:48:02,827 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2020-10-16 01:48:03,070 INFO L132 LiptonReduction]: Checked pairs total: 2245 [2020-10-16 01:48:03,070 INFO L134 LiptonReduction]: Total number of compositions: 62 [2020-10-16 01:48:03,070 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1259 [2020-10-16 01:48:03,071 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2020-10-16 01:48:03,071 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:48:03,072 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:48:03,072 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2020-10-16 01:48:03,072 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 01:48:03,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:48:03,072 INFO L82 PathProgramCache]: Analyzing trace with hash 578789, now seen corresponding path program 1 times [2020-10-16 01:48:03,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:48:03,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600033293] [2020-10-16 01:48:03,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:48:03,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:03,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:48:03,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600033293] [2020-10-16 01:48:03,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:48:03,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:48:03,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38600036] [2020-10-16 01:48:03,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:48:03,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:48:03,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:48:03,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:48:03,102 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 159 [2020-10-16 01:48:03,102 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 19 transitions, 62 flow. Second operand 3 states. [2020-10-16 01:48:03,102 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:48:03,103 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 159 [2020-10-16 01:48:03,103 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:48:03,212 INFO L129 PetriNetUnfolder]: 582/877 cut-off events. [2020-10-16 01:48:03,213 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 01:48:03,214 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 4530 event pairs, 147 based on Foata normal form. 0/669 useless extension candidates. Maximal degree in co-relation 1751. Up to 675 conditions per place. [2020-10-16 01:48:03,220 INFO L132 encePairwiseOnDemand]: 154/159 looper letters, 16 selfloop transitions, 4 changer transitions 0/28 dead transitions. [2020-10-16 01:48:03,220 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 28 transitions, 120 flow [2020-10-16 01:48:03,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:48:03,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:48:03,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 321 transitions. [2020-10-16 01:48:03,222 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6729559748427673 [2020-10-16 01:48:03,222 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 321 transitions. [2020-10-16 01:48:03,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 321 transitions. [2020-10-16 01:48:03,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:48:03,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 321 transitions. [2020-10-16 01:48:03,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:48:03,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:48:03,225 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:48:03,225 INFO L185 Difference]: Start difference. First operand has 29 places, 19 transitions, 62 flow. Second operand 3 states and 321 transitions. [2020-10-16 01:48:03,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 28 transitions, 120 flow [2020-10-16 01:48:03,226 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 01:48:03,227 INFO L241 Difference]: Finished difference. Result has 31 places, 22 transitions, 81 flow [2020-10-16 01:48:03,228 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, 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 01:48:03,228 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2020-10-16 01:48:03,228 INFO L481 AbstractCegarLoop]: Abstraction has has 31 places, 22 transitions, 81 flow [2020-10-16 01:48:03,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:48:03,228 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:48:03,228 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:48:03,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 01:48:03,229 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 01:48:03,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:48:03,229 INFO L82 PathProgramCache]: Analyzing trace with hash -239851129, now seen corresponding path program 1 times [2020-10-16 01:48:03,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:48:03,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914339126] [2020-10-16 01:48:03,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:48:03,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:03,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:48:03,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914339126] [2020-10-16 01:48:03,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:48:03,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:48:03,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734448926] [2020-10-16 01:48:03,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:48:03,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:48:03,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:48:03,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:48:03,270 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 159 [2020-10-16 01:48:03,271 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 22 transitions, 81 flow. Second operand 5 states. [2020-10-16 01:48:03,271 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:48:03,271 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 159 [2020-10-16 01:48:03,272 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:48:03,514 INFO L129 PetriNetUnfolder]: 819/1327 cut-off events. [2020-10-16 01:48:03,514 INFO L130 PetriNetUnfolder]: For 123/123 co-relation queries the response was YES. [2020-10-16 01:48:03,519 INFO L80 FinitePrefix]: Finished finitePrefix Result has 3227 conditions, 1327 events. 819/1327 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 8408 event pairs, 103 based on Foata normal form. 35/1169 useless extension candidates. Maximal degree in co-relation 3214. Up to 474 conditions per place. [2020-10-16 01:48:03,532 INFO L132 encePairwiseOnDemand]: 152/159 looper letters, 37 selfloop transitions, 15 changer transitions 1/60 dead transitions. [2020-10-16 01:48:03,532 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 60 transitions, 289 flow [2020-10-16 01:48:03,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 01:48:03,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 01:48:03,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 740 transitions. [2020-10-16 01:48:03,537 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6648697214734951 [2020-10-16 01:48:03,537 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 740 transitions. [2020-10-16 01:48:03,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 740 transitions. [2020-10-16 01:48:03,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:48:03,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 740 transitions. [2020-10-16 01:48:03,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 01:48:03,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 01:48:03,546 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 01:48:03,546 INFO L185 Difference]: Start difference. First operand has 31 places, 22 transitions, 81 flow. Second operand 7 states and 740 transitions. [2020-10-16 01:48:03,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 60 transitions, 289 flow [2020-10-16 01:48:03,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 60 transitions, 283 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:48:03,550 INFO L241 Difference]: Finished difference. Result has 41 places, 33 transitions, 191 flow [2020-10-16 01:48:03,550 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, 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=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=191, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2020-10-16 01:48:03,551 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 12 predicate places. [2020-10-16 01:48:03,551 INFO L481 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 191 flow [2020-10-16 01:48:03,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:48:03,551 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:48:03,551 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:48:03,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 01:48:03,552 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 01:48:03,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:48:03,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1094876323, now seen corresponding path program 1 times [2020-10-16 01:48:03,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:48:03,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556267343] [2020-10-16 01:48:03,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:48:03,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:03,608 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 01:48:03,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556267343] [2020-10-16 01:48:03,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:48:03,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:48:03,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028150003] [2020-10-16 01:48:03,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:48:03,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:48:03,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:48:03,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:48:03,612 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 159 [2020-10-16 01:48:03,613 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 191 flow. Second operand 5 states. [2020-10-16 01:48:03,614 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:48:03,614 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 159 [2020-10-16 01:48:03,614 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:48:04,108 INFO L129 PetriNetUnfolder]: 1044/1800 cut-off events. [2020-10-16 01:48:04,109 INFO L130 PetriNetUnfolder]: For 2003/2003 co-relation queries the response was YES. [2020-10-16 01:48:04,117 INFO L80 FinitePrefix]: Finished finitePrefix Result has 6044 conditions, 1800 events. 1044/1800 cut-off events. For 2003/2003 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 13024 event pairs, 158 based on Foata normal form. 47/1580 useless extension candidates. Maximal degree in co-relation 6025. Up to 651 conditions per place. [2020-10-16 01:48:04,132 INFO L132 encePairwiseOnDemand]: 152/159 looper letters, 46 selfloop transitions, 29 changer transitions 1/83 dead transitions. [2020-10-16 01:48:04,132 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 83 transitions, 606 flow [2020-10-16 01:48:04,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 01:48:04,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 01:48:04,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 735 transitions. [2020-10-16 01:48:04,136 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.660377358490566 [2020-10-16 01:48:04,136 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 735 transitions. [2020-10-16 01:48:04,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 735 transitions. [2020-10-16 01:48:04,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:48:04,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 735 transitions. [2020-10-16 01:48:04,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 01:48:04,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 01:48:04,142 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 01:48:04,142 INFO L185 Difference]: Start difference. First operand has 41 places, 33 transitions, 191 flow. Second operand 7 states and 735 transitions. [2020-10-16 01:48:04,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 83 transitions, 606 flow [2020-10-16 01:48:04,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 83 transitions, 587 flow, removed 5 selfloop flow, removed 1 redundant places. [2020-10-16 01:48:04,156 INFO L241 Difference]: Finished difference. Result has 51 places, 54 transitions, 462 flow [2020-10-16 01:48:04,156 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=462, PETRI_PLACES=51, PETRI_TRANSITIONS=54} [2020-10-16 01:48:04,156 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 22 predicate places. [2020-10-16 01:48:04,157 INFO L481 AbstractCegarLoop]: Abstraction has has 51 places, 54 transitions, 462 flow [2020-10-16 01:48:04,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:48:04,157 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:48:04,157 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:48:04,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 01:48:04,157 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 01:48:04,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:48:04,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1288707331, now seen corresponding path program 1 times [2020-10-16 01:48:04,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:48:04,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899130608] [2020-10-16 01:48:04,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:48:04,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:04,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:48:04,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899130608] [2020-10-16 01:48:04,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571849251] [2020-10-16 01:48:04,244 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 01:48:04,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:04,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 01:48:04,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 01:48:04,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:48:04,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 01:48:04,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2020-10-16 01:48:04,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039392155] [2020-10-16 01:48:04,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-16 01:48:04,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:48:04,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-16 01:48:04,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2020-10-16 01:48:04,445 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 159 [2020-10-16 01:48:04,447 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 54 transitions, 462 flow. Second operand 18 states. [2020-10-16 01:48:04,447 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:48:04,447 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 159 [2020-10-16 01:48:04,447 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:48:05,549 INFO L129 PetriNetUnfolder]: 2284/3943 cut-off events. [2020-10-16 01:48:05,549 INFO L130 PetriNetUnfolder]: For 9293/9293 co-relation queries the response was YES. [2020-10-16 01:48:05,570 INFO L80 FinitePrefix]: Finished finitePrefix Result has 16546 conditions, 3943 events. 2284/3943 cut-off events. For 9293/9293 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 27274 event pairs, 392 based on Foata normal form. 15/3533 useless extension candidates. Maximal degree in co-relation 16521. Up to 1355 conditions per place. [2020-10-16 01:48:05,601 INFO L132 encePairwiseOnDemand]: 147/159 looper letters, 103 selfloop transitions, 77 changer transitions 5/189 dead transitions. [2020-10-16 01:48:05,601 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 189 transitions, 1663 flow [2020-10-16 01:48:05,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-16 01:48:05,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-16 01:48:05,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1809 transitions. [2020-10-16 01:48:05,609 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5688679245283019 [2020-10-16 01:48:05,609 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1809 transitions. [2020-10-16 01:48:05,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1809 transitions. [2020-10-16 01:48:05,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:48:05,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1809 transitions. [2020-10-16 01:48:05,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 21 states. [2020-10-16 01:48:05,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 21 states. [2020-10-16 01:48:05,621 INFO L81 ComplementDD]: Finished complementDD. Result 21 states. [2020-10-16 01:48:05,621 INFO L185 Difference]: Start difference. First operand has 51 places, 54 transitions, 462 flow. Second operand 20 states and 1809 transitions. [2020-10-16 01:48:05,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 189 transitions, 1663 flow [2020-10-16 01:48:05,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 189 transitions, 1637 flow, removed 13 selfloop flow, removed 0 redundant places. [2020-10-16 01:48:05,697 INFO L241 Difference]: Finished difference. Result has 81 places, 103 transitions, 1228 flow [2020-10-16 01:48:05,698 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1228, PETRI_PLACES=81, PETRI_TRANSITIONS=103} [2020-10-16 01:48:05,698 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 52 predicate places. [2020-10-16 01:48:05,698 INFO L481 AbstractCegarLoop]: Abstraction has has 81 places, 103 transitions, 1228 flow [2020-10-16 01:48:05,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-16 01:48:05,698 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:48:05,698 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:48:05,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-16 01:48:05,913 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 01:48:05,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:48:05,914 INFO L82 PathProgramCache]: Analyzing trace with hash -2128951409, now seen corresponding path program 2 times [2020-10-16 01:48:05,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:48:05,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474067361] [2020-10-16 01:48:05,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:48:05,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:05,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:48:05,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474067361] [2020-10-16 01:48:05,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200860723] [2020-10-16 01:48:05,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 01:48:06,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 01:48:06,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 01:48:06,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 01:48:06,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 01:48:06,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:48:06,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 01:48:06,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2020-10-16 01:48:06,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528947863] [2020-10-16 01:48:06,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-16 01:48:06,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:48:06,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-16 01:48:06,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2020-10-16 01:48:06,211 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 159 [2020-10-16 01:48:06,212 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 103 transitions, 1228 flow. Second operand 18 states. [2020-10-16 01:48:06,212 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:48:06,212 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 159 [2020-10-16 01:48:06,212 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:48:08,973 INFO L129 PetriNetUnfolder]: 5538/9917 cut-off events. [2020-10-16 01:48:08,974 INFO L130 PetriNetUnfolder]: For 50772/50772 co-relation queries the response was YES. [2020-10-16 01:48:09,033 INFO L80 FinitePrefix]: Finished finitePrefix Result has 52231 conditions, 9917 events. 5538/9917 cut-off events. For 50772/50772 co-relation queries the response was YES. Maximal size of possible extension queue 998. Compared 83610 event pairs, 473 based on Foata normal form. 27/9938 useless extension candidates. Maximal degree in co-relation 52193. Up to 3234 conditions per place. [2020-10-16 01:48:09,097 INFO L132 encePairwiseOnDemand]: 147/159 looper letters, 268 selfloop transitions, 289 changer transitions 6/567 dead transitions. [2020-10-16 01:48:09,097 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 567 transitions, 6919 flow [2020-10-16 01:48:09,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-16 01:48:09,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-16 01:48:09,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 4248 transitions. [2020-10-16 01:48:09,112 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5684464070654356 [2020-10-16 01:48:09,113 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 4248 transitions. [2020-10-16 01:48:09,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 4248 transitions. [2020-10-16 01:48:09,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:48:09,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 4248 transitions. [2020-10-16 01:48:09,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 48 states. [2020-10-16 01:48:09,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 48 states. [2020-10-16 01:48:09,138 INFO L81 ComplementDD]: Finished complementDD. Result 48 states. [2020-10-16 01:48:09,138 INFO L185 Difference]: Start difference. First operand has 81 places, 103 transitions, 1228 flow. Second operand 47 states and 4248 transitions. [2020-10-16 01:48:09,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 567 transitions, 6919 flow [2020-10-16 01:48:09,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 567 transitions, 6508 flow, removed 174 selfloop flow, removed 3 redundant places. [2020-10-16 01:48:09,700 INFO L241 Difference]: Finished difference. Result has 152 places, 336 transitions, 5072 flow [2020-10-16 01:48:09,701 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=1134, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=5072, PETRI_PLACES=152, PETRI_TRANSITIONS=336} [2020-10-16 01:48:09,701 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 123 predicate places. [2020-10-16 01:48:09,701 INFO L481 AbstractCegarLoop]: Abstraction has has 152 places, 336 transitions, 5072 flow [2020-10-16 01:48:09,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-16 01:48:09,701 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:48:09,701 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:48:09,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-10-16 01:48:09,917 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 01:48:09,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:48:09,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1399813799, now seen corresponding path program 3 times [2020-10-16 01:48:09,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:48:09,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590358667] [2020-10-16 01:48:09,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:48:09,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:10,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:48:10,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590358667] [2020-10-16 01:48:10,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482069890] [2020-10-16 01:48:10,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 01:48:10,075 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 01:48:10,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 01:48:10,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 01:48:10,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 01:48:10,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:48:10,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 01:48:10,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2020-10-16 01:48:10,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992241200] [2020-10-16 01:48:10,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-16 01:48:10,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:48:10,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-16 01:48:10,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2020-10-16 01:48:10,299 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 159 [2020-10-16 01:48:10,299 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 336 transitions, 5072 flow. Second operand 18 states. [2020-10-16 01:48:10,299 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:48:10,300 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 159 [2020-10-16 01:48:10,300 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:48:14,213 INFO L129 PetriNetUnfolder]: 6572/12435 cut-off events. [2020-10-16 01:48:14,213 INFO L130 PetriNetUnfolder]: For 179325/179331 co-relation queries the response was YES. [2020-10-16 01:48:14,309 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90864 conditions, 12435 events. 6572/12435 cut-off events. For 179325/179331 co-relation queries the response was YES. Maximal size of possible extension queue 1292. Compared 115181 event pairs, 418 based on Foata normal form. 70/12504 useless extension candidates. Maximal degree in co-relation 90798. Up to 2699 conditions per place. [2020-10-16 01:48:14,377 INFO L132 encePairwiseOnDemand]: 147/159 looper letters, 187 selfloop transitions, 428 changer transitions 55/674 dead transitions. [2020-10-16 01:48:14,378 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 674 transitions, 11003 flow [2020-10-16 01:48:14,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-16 01:48:14,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-16 01:48:14,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 2858 transitions. [2020-10-16 01:48:14,383 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5617138364779874 [2020-10-16 01:48:14,384 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 2858 transitions. [2020-10-16 01:48:14,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 2858 transitions. [2020-10-16 01:48:14,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:48:14,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 2858 transitions. [2020-10-16 01:48:14,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 33 states. [2020-10-16 01:48:14,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 33 states. [2020-10-16 01:48:14,396 INFO L81 ComplementDD]: Finished complementDD. Result 33 states. [2020-10-16 01:48:14,396 INFO L185 Difference]: Start difference. First operand has 152 places, 336 transitions, 5072 flow. Second operand 32 states and 2858 transitions. [2020-10-16 01:48:14,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 674 transitions, 11003 flow [2020-10-16 01:48:16,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 674 transitions, 10546 flow, removed 189 selfloop flow, removed 5 redundant places. [2020-10-16 01:48:16,274 INFO L241 Difference]: Finished difference. Result has 191 places, 489 transitions, 8602 flow [2020-10-16 01:48:16,275 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=4771, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=277, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=8602, PETRI_PLACES=191, PETRI_TRANSITIONS=489} [2020-10-16 01:48:16,275 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 162 predicate places. [2020-10-16 01:48:16,275 INFO L481 AbstractCegarLoop]: Abstraction has has 191 places, 489 transitions, 8602 flow [2020-10-16 01:48:16,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-16 01:48:16,275 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:48:16,275 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:48:16,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-16 01:48:16,476 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 01:48:16,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:48:16,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1923102279, now seen corresponding path program 4 times [2020-10-16 01:48:16,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:48:16,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160685591] [2020-10-16 01:48:16,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:48:16,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:16,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:48:16,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160685591] [2020-10-16 01:48:16,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981764335] [2020-10-16 01:48:16,555 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST 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 01:48:16,625 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 01:48:16,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 01:48:16,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 01:48:16,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 01:48:16,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:48:16,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 01:48:16,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2020-10-16 01:48:16,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434556225] [2020-10-16 01:48:16,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-16 01:48:16,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:48:16,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-16 01:48:16,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2020-10-16 01:48:16,756 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 159 [2020-10-16 01:48:16,757 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 489 transitions, 8602 flow. Second operand 18 states. [2020-10-16 01:48:16,757 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:48:16,758 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 159 [2020-10-16 01:48:16,758 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:48:20,643 INFO L129 PetriNetUnfolder]: 6780/13310 cut-off events. [2020-10-16 01:48:20,644 INFO L130 PetriNetUnfolder]: For 302116/302138 co-relation queries the response was YES. [2020-10-16 01:48:20,777 INFO L80 FinitePrefix]: Finished finitePrefix Result has 118257 conditions, 13310 events. 6780/13310 cut-off events. For 302116/302138 co-relation queries the response was YES. Maximal size of possible extension queue 1454. Compared 129101 event pairs, 520 based on Foata normal form. 41/13348 useless extension candidates. Maximal degree in co-relation 118179. Up to 3420 conditions per place. [2020-10-16 01:48:20,860 INFO L132 encePairwiseOnDemand]: 147/159 looper letters, 192 selfloop transitions, 549 changer transitions 69/814 dead transitions. [2020-10-16 01:48:20,860 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 814 transitions, 15693 flow [2020-10-16 01:48:20,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-16 01:48:20,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-16 01:48:20,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 2926 transitions. [2020-10-16 01:48:20,865 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5576519916142557 [2020-10-16 01:48:20,865 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 2926 transitions. [2020-10-16 01:48:20,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 2926 transitions. [2020-10-16 01:48:20,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:48:20,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 2926 transitions. [2020-10-16 01:48:20,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 34 states. [2020-10-16 01:48:20,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 34 states. [2020-10-16 01:48:20,875 INFO L81 ComplementDD]: Finished complementDD. Result 34 states. [2020-10-16 01:48:20,875 INFO L185 Difference]: Start difference. First operand has 191 places, 489 transitions, 8602 flow. Second operand 33 states and 2926 transitions. [2020-10-16 01:48:20,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 814 transitions, 15693 flow [2020-10-16 01:48:24,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 814 transitions, 15354 flow, removed 117 selfloop flow, removed 13 redundant places. [2020-10-16 01:48:24,816 INFO L241 Difference]: Finished difference. Result has 218 places, 624 transitions, 12828 flow [2020-10-16 01:48:24,817 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=8357, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=415, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=12828, PETRI_PLACES=218, PETRI_TRANSITIONS=624} [2020-10-16 01:48:24,817 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 189 predicate places. [2020-10-16 01:48:24,817 INFO L481 AbstractCegarLoop]: Abstraction has has 218 places, 624 transitions, 12828 flow [2020-10-16 01:48:24,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-16 01:48:24,817 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:48:24,818 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:48:25,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 01:48:25,019 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:48:25,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:48:25,019 INFO L82 PathProgramCache]: Analyzing trace with hash 90847801, now seen corresponding path program 5 times [2020-10-16 01:48:25,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:48:25,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013784690] [2020-10-16 01:48:25,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:48:25,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:25,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:48:25,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013784690] [2020-10-16 01:48:25,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262478907] [2020-10-16 01:48:25,092 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 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 01:48:25,141 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 01:48:25,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 01:48:25,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 01:48:25,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 01:48:25,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:48:25,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 01:48:25,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2020-10-16 01:48:25,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802907869] [2020-10-16 01:48:25,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-16 01:48:25,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:48:25,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-16 01:48:25,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2020-10-16 01:48:25,255 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 159 [2020-10-16 01:48:25,256 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 624 transitions, 12828 flow. Second operand 18 states. [2020-10-16 01:48:25,256 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:48:25,256 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 159 [2020-10-16 01:48:25,257 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:48:30,518 INFO L129 PetriNetUnfolder]: 6714/13271 cut-off events. [2020-10-16 01:48:30,519 INFO L130 PetriNetUnfolder]: For 377386/377420 co-relation queries the response was YES. [2020-10-16 01:48:30,705 INFO L80 FinitePrefix]: Finished finitePrefix Result has 128160 conditions, 13271 events. 6714/13271 cut-off events. For 377386/377420 co-relation queries the response was YES. Maximal size of possible extension queue 1461. Compared 129210 event pairs, 1099 based on Foata normal form. 49/13320 useless extension candidates. Maximal degree in co-relation 128072. Up to 3416 conditions per place. [2020-10-16 01:48:30,794 INFO L132 encePairwiseOnDemand]: 148/159 looper letters, 286 selfloop transitions, 507 changer transitions 7/804 dead transitions. [2020-10-16 01:48:30,794 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 804 transitions, 17378 flow [2020-10-16 01:48:30,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 01:48:30,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 01:48:30,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2608 transitions. [2020-10-16 01:48:30,799 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5656039904576013 [2020-10-16 01:48:30,799 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2608 transitions. [2020-10-16 01:48:30,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2608 transitions. [2020-10-16 01:48:30,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:48:30,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2608 transitions. [2020-10-16 01:48:30,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 01:48:30,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 01:48:30,807 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 01:48:30,808 INFO L185 Difference]: Start difference. First operand has 218 places, 624 transitions, 12828 flow. Second operand 29 states and 2608 transitions. [2020-10-16 01:48:30,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 804 transitions, 17378 flow [2020-10-16 01:48:37,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 804 transitions, 16986 flow, removed 109 selfloop flow, removed 17 redundant places. [2020-10-16 01:48:37,372 INFO L241 Difference]: Finished difference. Result has 229 places, 640 transitions, 14011 flow [2020-10-16 01:48:37,373 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=12558, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=492, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=14011, PETRI_PLACES=229, PETRI_TRANSITIONS=640} [2020-10-16 01:48:37,373 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 200 predicate places. [2020-10-16 01:48:37,373 INFO L481 AbstractCegarLoop]: Abstraction has has 229 places, 640 transitions, 14011 flow [2020-10-16 01:48:37,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-16 01:48:37,373 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:48:37,374 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:48:37,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-16 01:48:37,575 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:48:37,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:48:37,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1190123558, now seen corresponding path program 1 times [2020-10-16 01:48:37,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:48:37,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286967824] [2020-10-16 01:48:37,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:48:37,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:37,613 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 01:48:37,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286967824] [2020-10-16 01:48:37,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:48:37,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:48:37,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115672544] [2020-10-16 01:48:37,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:48:37,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:48:37,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:48:37,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:48:37,615 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 159 [2020-10-16 01:48:37,616 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 640 transitions, 14011 flow. Second operand 5 states. [2020-10-16 01:48:37,616 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:48:37,616 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 159 [2020-10-16 01:48:37,616 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:48:41,758 INFO L129 PetriNetUnfolder]: 7040/14402 cut-off events. [2020-10-16 01:48:41,759 INFO L130 PetriNetUnfolder]: For 452749/455417 co-relation queries the response was YES. [2020-10-16 01:48:41,975 INFO L80 FinitePrefix]: Finished finitePrefix Result has 144387 conditions, 14402 events. 7040/14402 cut-off events. For 452749/455417 co-relation queries the response was YES. Maximal size of possible extension queue 1979. Compared 152666 event pairs, 948 based on Foata normal form. 670/14554 useless extension candidates. Maximal degree in co-relation 144296. Up to 5263 conditions per place. [2020-10-16 01:48:42,068 INFO L132 encePairwiseOnDemand]: 152/159 looper letters, 493 selfloop transitions, 505 changer transitions 36/1061 dead transitions. [2020-10-16 01:48:42,068 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 1061 transitions, 25118 flow [2020-10-16 01:48:42,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 01:48:42,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 01:48:42,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 742 transitions. [2020-10-16 01:48:42,070 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2020-10-16 01:48:42,071 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 742 transitions. [2020-10-16 01:48:42,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 742 transitions. [2020-10-16 01:48:42,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:48:42,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 742 transitions. [2020-10-16 01:48:42,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 01:48:42,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 01:48:42,073 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 01:48:42,073 INFO L185 Difference]: Start difference. First operand has 229 places, 640 transitions, 14011 flow. Second operand 7 states and 742 transitions. [2020-10-16 01:48:42,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 1061 transitions, 25118 flow [2020-10-16 01:48:52,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 1061 transitions, 24368 flow, removed 74 selfloop flow, removed 17 redundant places. [2020-10-16 01:48:52,452 INFO L241 Difference]: Finished difference. Result has 223 places, 911 transitions, 22208 flow [2020-10-16 01:48:52,453 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=13560, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=22208, PETRI_PLACES=223, PETRI_TRANSITIONS=911} [2020-10-16 01:48:52,453 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 194 predicate places. [2020-10-16 01:48:52,453 INFO L481 AbstractCegarLoop]: Abstraction has has 223 places, 911 transitions, 22208 flow [2020-10-16 01:48:52,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:48:52,454 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:48:52,454 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:48:52,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-16 01:48:52,454 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:48:52,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:48:52,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1764914331, now seen corresponding path program 1 times [2020-10-16 01:48:52,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:48:52,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901359904] [2020-10-16 01:48:52,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:48:52,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 01:48:52,467 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 01:48:52,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 01:48:52,477 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 01:48:52,483 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 01:48:52,484 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 01:48:52,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-16 01:48:52,484 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 01:48:52,485 WARN L371 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 01:48:52,485 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-10-16 01:48:52,496 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,496 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,496 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,496 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,496 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,497 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,497 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,497 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,497 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,497 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,497 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,497 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,498 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,498 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,498 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,498 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,498 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,498 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,498 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,498 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,499 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,499 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,499 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,499 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,499 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,499 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,499 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,500 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,500 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,500 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,500 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,500 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,500 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,500 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,501 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,501 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,501 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,501 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,501 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,501 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,502 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,502 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,502 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,502 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,502 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,502 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,502 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,503 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,503 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,503 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,503 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,503 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,503 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,503 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,504 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,504 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,504 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,504 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,504 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,504 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,504 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,505 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,505 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,505 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,505 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,505 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,505 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,505 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,505 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,505 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,505 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,506 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,506 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,506 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,506 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,506 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,506 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,506 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,506 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,506 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,506 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,507 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,507 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,507 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,507 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,507 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,507 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,507 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,507 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,508 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,509 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,509 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,509 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,509 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,509 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,509 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,510 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,510 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,510 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,511 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,511 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,511 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,512 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,512 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,512 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,513 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,513 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,513 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,514 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,514 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,514 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,515 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,515 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,516 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,516 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,516 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,516 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,516 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,517 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,517 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,517 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,517 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,517 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,528 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,529 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,529 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,529 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,529 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:52,531 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-16 01:48:52,531 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:48:52,531 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:48:52,532 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:48:52,532 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:48:52,532 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:48:52,532 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:48:52,532 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:48:52,532 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:48:52,533 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 127 places, 115 transitions, 294 flow [2020-10-16 01:48:52,546 INFO L129 PetriNetUnfolder]: 7/137 cut-off events. [2020-10-16 01:48:52,546 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-16 01:48:52,547 INFO L80 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 137 events. 7/137 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 233 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 157. Up to 10 conditions per place. [2020-10-16 01:48:52,547 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 115 transitions, 294 flow [2020-10-16 01:48:52,548 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 81 transitions, 197 flow [2020-10-16 01:48:52,548 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:48:52,549 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 81 transitions, 197 flow [2020-10-16 01:48:52,549 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 90 places, 81 transitions, 197 flow [2020-10-16 01:48:52,549 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 90 places, 81 transitions, 197 flow [2020-10-16 01:48:52,558 INFO L129 PetriNetUnfolder]: 7/137 cut-off events. [2020-10-16 01:48:52,558 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-16 01:48:52,559 INFO L80 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 137 events. 7/137 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 218 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 130. Up to 10 conditions per place. [2020-10-16 01:48:52,562 INFO L117 LiptonReduction]: Number of co-enabled transitions 2192 [2020-10-16 01:48:53,710 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2020-10-16 01:48:53,937 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2020-10-16 01:48:54,008 INFO L132 LiptonReduction]: Checked pairs total: 3265 [2020-10-16 01:48:54,008 INFO L134 LiptonReduction]: Total number of compositions: 67 [2020-10-16 01:48:54,008 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1460 [2020-10-16 01:48:54,009 INFO L129 PetriNetUnfolder]: 0/3 cut-off events. [2020-10-16 01:48:54,009 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:48:54,009 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:48:54,009 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2020-10-16 01:48:54,009 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 01:48:54,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:48:54,010 INFO L82 PathProgramCache]: Analyzing trace with hash 777173, now seen corresponding path program 1 times [2020-10-16 01:48:54,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:48:54,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249426367] [2020-10-16 01:48:54,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:48:54,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:54,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:48:54,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249426367] [2020-10-16 01:48:54,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:48:54,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:48:54,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333501300] [2020-10-16 01:48:54,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:48:54,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:48:54,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:48:54,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:48:54,031 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 182 [2020-10-16 01:48:54,032 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 22 transitions, 79 flow. Second operand 3 states. [2020-10-16 01:48:54,032 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:48:54,032 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 182 [2020-10-16 01:48:54,032 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:48:54,405 INFO L129 PetriNetUnfolder]: 2434/3340 cut-off events. [2020-10-16 01:48:54,406 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-16 01:48:54,413 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 18037 event pairs, 518 based on Foata normal form. 0/2711 useless extension candidates. Maximal degree in co-relation 6680. Up to 2863 conditions per place. [2020-10-16 01:48:54,424 INFO L132 encePairwiseOnDemand]: 176/182 looper letters, 19 selfloop transitions, 5 changer transitions 0/33 dead transitions. [2020-10-16 01:48:54,424 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 33 transitions, 149 flow [2020-10-16 01:48:54,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:48:54,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:48:54,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 373 transitions. [2020-10-16 01:48:54,426 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6831501831501832 [2020-10-16 01:48:54,426 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 373 transitions. [2020-10-16 01:48:54,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 373 transitions. [2020-10-16 01:48:54,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:48:54,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 373 transitions. [2020-10-16 01:48:54,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:48:54,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:48:54,429 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:48:54,429 INFO L185 Difference]: Start difference. First operand has 34 places, 22 transitions, 79 flow. Second operand 3 states and 373 transitions. [2020-10-16 01:48:54,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 33 transitions, 149 flow [2020-10-16 01:48:54,430 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 01:48:54,431 INFO L241 Difference]: Finished difference. Result has 36 places, 26 transitions, 99 flow [2020-10-16 01:48:54,431 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, 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 01:48:54,431 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2020-10-16 01:48:54,431 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 99 flow [2020-10-16 01:48:54,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:48:54,432 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:48:54,432 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:48:54,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-16 01:48:54,432 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 01:48:54,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:48:54,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1370069388, now seen corresponding path program 1 times [2020-10-16 01:48:54,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:48:54,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457805355] [2020-10-16 01:48:54,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:48:54,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:54,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:48:54,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457805355] [2020-10-16 01:48:54,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:48:54,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:48:54,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81235421] [2020-10-16 01:48:54,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:48:54,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:48:54,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:48:54,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:48:54,467 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 182 [2020-10-16 01:48:54,468 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 99 flow. Second operand 5 states. [2020-10-16 01:48:54,468 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:48:54,468 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 182 [2020-10-16 01:48:54,468 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:48:54,912 INFO L129 PetriNetUnfolder]: 4099/5877 cut-off events. [2020-10-16 01:48:54,913 INFO L130 PetriNetUnfolder]: For 633/633 co-relation queries the response was YES. [2020-10-16 01:48:54,925 INFO L80 FinitePrefix]: Finished finitePrefix Result has 14350 conditions, 5877 events. 4099/5877 cut-off events. For 633/633 co-relation queries the response was YES. Maximal size of possible extension queue 692. Compared 38941 event pairs, 508 based on Foata normal form. 107/5313 useless extension candidates. Maximal degree in co-relation 14336. Up to 2328 conditions per place. [2020-10-16 01:48:54,939 INFO L132 encePairwiseOnDemand]: 174/182 looper letters, 45 selfloop transitions, 19 changer transitions 1/73 dead transitions. [2020-10-16 01:48:54,939 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 73 transitions, 358 flow [2020-10-16 01:48:54,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 01:48:54,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 01:48:54,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 857 transitions. [2020-10-16 01:48:54,942 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6726844583987441 [2020-10-16 01:48:54,942 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 857 transitions. [2020-10-16 01:48:54,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 857 transitions. [2020-10-16 01:48:54,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:48:54,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 857 transitions. [2020-10-16 01:48:54,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 01:48:54,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 01:48:54,945 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 01:48:54,945 INFO L185 Difference]: Start difference. First operand has 36 places, 26 transitions, 99 flow. Second operand 7 states and 857 transitions. [2020-10-16 01:48:54,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 73 transitions, 358 flow [2020-10-16 01:48:54,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 73 transitions, 350 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:48:54,947 INFO L241 Difference]: Finished difference. Result has 46 places, 40 transitions, 239 flow [2020-10-16 01:48:54,948 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, 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=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=239, PETRI_PLACES=46, PETRI_TRANSITIONS=40} [2020-10-16 01:48:54,948 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 12 predicate places. [2020-10-16 01:48:54,948 INFO L481 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 239 flow [2020-10-16 01:48:54,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:48:54,948 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:48:54,948 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:48:54,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-16 01:48:54,949 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 01:48:54,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:48:54,949 INFO L82 PathProgramCache]: Analyzing trace with hash 450491119, now seen corresponding path program 1 times [2020-10-16 01:48:54,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:48:54,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126286380] [2020-10-16 01:48:54,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:48:54,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:54,982 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 01:48:54,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126286380] [2020-10-16 01:48:54,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:48:54,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:48:54,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654429477] [2020-10-16 01:48:54,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:48:54,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:48:54,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:48:54,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:48:54,984 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 182 [2020-10-16 01:48:54,985 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 40 transitions, 239 flow. Second operand 5 states. [2020-10-16 01:48:54,985 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:48:54,985 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 182 [2020-10-16 01:48:54,985 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:48:55,657 INFO L129 PetriNetUnfolder]: 6136/9114 cut-off events. [2020-10-16 01:48:55,658 INFO L130 PetriNetUnfolder]: For 8797/8797 co-relation queries the response was YES. [2020-10-16 01:48:55,683 INFO L80 FinitePrefix]: Finished finitePrefix Result has 31092 conditions, 9114 events. 6136/9114 cut-off events. For 8797/8797 co-relation queries the response was YES. Maximal size of possible extension queue 1189. Compared 68077 event pairs, 865 based on Foata normal form. 157/8176 useless extension candidates. Maximal degree in co-relation 31072. Up to 3718 conditions per place. [2020-10-16 01:48:55,710 INFO L132 encePairwiseOnDemand]: 174/182 looper letters, 56 selfloop transitions, 39 changer transitions 1/104 dead transitions. [2020-10-16 01:48:55,710 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 104 transitions, 775 flow [2020-10-16 01:48:55,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 01:48:55,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 01:48:55,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 859 transitions. [2020-10-16 01:48:55,712 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.67425431711146 [2020-10-16 01:48:55,712 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 859 transitions. [2020-10-16 01:48:55,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 859 transitions. [2020-10-16 01:48:55,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:48:55,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 859 transitions. [2020-10-16 01:48:55,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 01:48:55,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 01:48:55,715 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 01:48:55,715 INFO L185 Difference]: Start difference. First operand has 46 places, 40 transitions, 239 flow. Second operand 7 states and 859 transitions. [2020-10-16 01:48:55,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 104 transitions, 775 flow [2020-10-16 01:48:55,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 104 transitions, 746 flow, removed 8 selfloop flow, removed 1 redundant places. [2020-10-16 01:48:55,737 INFO L241 Difference]: Finished difference. Result has 56 places, 68 transitions, 599 flow [2020-10-16 01:48:55,737 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=599, PETRI_PLACES=56, PETRI_TRANSITIONS=68} [2020-10-16 01:48:55,737 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 22 predicate places. [2020-10-16 01:48:55,737 INFO L481 AbstractCegarLoop]: Abstraction has has 56 places, 68 transitions, 599 flow [2020-10-16 01:48:55,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:48:55,738 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:48:55,738 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:48:55,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-16 01:48:55,738 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 01:48:55,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:48:55,738 INFO L82 PathProgramCache]: Analyzing trace with hash 258793303, now seen corresponding path program 1 times [2020-10-16 01:48:55,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:48:55,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889835059] [2020-10-16 01:48:55,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:48:55,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:55,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:48:55,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889835059] [2020-10-16 01:48:55,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822512588] [2020-10-16 01:48:55,815 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 01:48:55,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:55,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 01:48:55,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 01:48:56,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:48:56,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 01:48:56,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 01:48:56,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256885454] [2020-10-16 01:48:56,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 01:48:56,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:48:56,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 01:48:56,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-10-16 01:48:56,009 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 182 [2020-10-16 01:48:56,010 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 68 transitions, 599 flow. Second operand 17 states. [2020-10-16 01:48:56,010 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:48:56,011 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 182 [2020-10-16 01:48:56,011 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:48:58,209 INFO L129 PetriNetUnfolder]: 13788/20778 cut-off events. [2020-10-16 01:48:58,210 INFO L130 PetriNetUnfolder]: For 46871/46871 co-relation queries the response was YES. [2020-10-16 01:48:58,300 INFO L80 FinitePrefix]: Finished finitePrefix Result has 87958 conditions, 20778 events. 13788/20778 cut-off events. For 46871/46871 co-relation queries the response was YES. Maximal size of possible extension queue 1399. Compared 148199 event pairs, 2624 based on Foata normal form. 48/19006 useless extension candidates. Maximal degree in co-relation 87932. Up to 7944 conditions per place. [2020-10-16 01:48:58,365 INFO L132 encePairwiseOnDemand]: 169/182 looper letters, 133 selfloop transitions, 116 changer transitions 18/272 dead transitions. [2020-10-16 01:48:58,365 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 272 transitions, 2517 flow [2020-10-16 01:48:58,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-16 01:48:58,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-16 01:48:58,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2503 transitions. [2020-10-16 01:48:58,369 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5979455327281414 [2020-10-16 01:48:58,369 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2503 transitions. [2020-10-16 01:48:58,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2503 transitions. [2020-10-16 01:48:58,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:48:58,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2503 transitions. [2020-10-16 01:48:58,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 24 states. [2020-10-16 01:48:58,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 24 states. [2020-10-16 01:48:58,377 INFO L81 ComplementDD]: Finished complementDD. Result 24 states. [2020-10-16 01:48:58,377 INFO L185 Difference]: Start difference. First operand has 56 places, 68 transitions, 599 flow. Second operand 23 states and 2503 transitions. [2020-10-16 01:48:58,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 272 transitions, 2517 flow [2020-10-16 01:48:58,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 272 transitions, 2463 flow, removed 27 selfloop flow, removed 0 redundant places. [2020-10-16 01:48:58,845 INFO L241 Difference]: Finished difference. Result has 90 places, 148 transitions, 1830 flow [2020-10-16 01:48:58,845 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=589, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1830, PETRI_PLACES=90, PETRI_TRANSITIONS=148} [2020-10-16 01:48:58,846 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 56 predicate places. [2020-10-16 01:48:58,846 INFO L481 AbstractCegarLoop]: Abstraction has has 90 places, 148 transitions, 1830 flow [2020-10-16 01:48:58,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 01:48:58,846 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:48:58,846 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:48:59,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 01:48:59,052 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 01:48:59,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:48:59,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1914532745, now seen corresponding path program 2 times [2020-10-16 01:48:59,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:48:59,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820065366] [2020-10-16 01:48:59,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:48:59,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:59,132 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:48:59,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820065366] [2020-10-16 01:48:59,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969824369] [2020-10-16 01:48:59,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 01:48:59,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 01:48:59,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 01:48:59,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 01:48:59,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 01:48:59,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:48:59,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 01:48:59,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 01:48:59,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843455799] [2020-10-16 01:48:59,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 01:48:59,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:48:59,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 01:48:59,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2020-10-16 01:48:59,310 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 182 [2020-10-16 01:48:59,311 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 148 transitions, 1830 flow. Second operand 17 states. [2020-10-16 01:48:59,312 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:48:59,312 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 182 [2020-10-16 01:48:59,312 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:49:03,218 INFO L129 PetriNetUnfolder]: 16736/26704 cut-off events. [2020-10-16 01:49:03,218 INFO L130 PetriNetUnfolder]: For 137539/137539 co-relation queries the response was YES. [2020-10-16 01:49:03,416 INFO L80 FinitePrefix]: Finished finitePrefix Result has 142554 conditions, 26704 events. 16736/26704 cut-off events. For 137539/137539 co-relation queries the response was YES. Maximal size of possible extension queue 1984. Compared 216001 event pairs, 1325 based on Foata normal form. 61/26743 useless extension candidates. Maximal degree in co-relation 142514. Up to 8871 conditions per place. [2020-10-16 01:49:03,510 INFO L132 encePairwiseOnDemand]: 169/182 looper letters, 172 selfloop transitions, 272 changer transitions 79/528 dead transitions. [2020-10-16 01:49:03,510 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 528 transitions, 6645 flow [2020-10-16 01:49:03,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-16 01:49:03,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-16 01:49:03,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 3887 transitions. [2020-10-16 01:49:03,515 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5932539682539683 [2020-10-16 01:49:03,515 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 3887 transitions. [2020-10-16 01:49:03,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 3887 transitions. [2020-10-16 01:49:03,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:49:03,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 3887 transitions. [2020-10-16 01:49:03,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 37 states. [2020-10-16 01:49:03,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 37 states. [2020-10-16 01:49:03,527 INFO L81 ComplementDD]: Finished complementDD. Result 37 states. [2020-10-16 01:49:03,527 INFO L185 Difference]: Start difference. First operand has 90 places, 148 transitions, 1830 flow. Second operand 36 states and 3887 transitions. [2020-10-16 01:49:03,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 528 transitions, 6645 flow [2020-10-16 01:49:05,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 528 transitions, 6233 flow, removed 191 selfloop flow, removed 3 redundant places. [2020-10-16 01:49:05,956 INFO L241 Difference]: Finished difference. Result has 138 places, 307 transitions, 4680 flow [2020-10-16 01:49:05,957 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=1684, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=4680, PETRI_PLACES=138, PETRI_TRANSITIONS=307} [2020-10-16 01:49:05,957 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 104 predicate places. [2020-10-16 01:49:05,957 INFO L481 AbstractCegarLoop]: Abstraction has has 138 places, 307 transitions, 4680 flow [2020-10-16 01:49:05,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 01:49:05,957 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:49:05,957 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:49:06,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 01:49:06,158 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 01:49:06,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:49:06,159 INFO L82 PathProgramCache]: Analyzing trace with hash -869727287, now seen corresponding path program 3 times [2020-10-16 01:49:06,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:49:06,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356800142] [2020-10-16 01:49:06,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:49:06,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:49:06,237 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:49:06,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356800142] [2020-10-16 01:49:06,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325481781] [2020-10-16 01:49:06,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 01:49:06,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 01:49:06,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 01:49:06,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 01:49:06,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 01:49:06,404 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:49:06,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 01:49:06,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 01:49:06,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536397065] [2020-10-16 01:49:06,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 01:49:06,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:49:06,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 01:49:06,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-10-16 01:49:06,410 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 182 [2020-10-16 01:49:06,411 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 307 transitions, 4680 flow. Second operand 17 states. [2020-10-16 01:49:06,411 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:49:06,412 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 182 [2020-10-16 01:49:06,412 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:49:11,538 INFO L129 PetriNetUnfolder]: 16594/26637 cut-off events. [2020-10-16 01:49:11,538 INFO L130 PetriNetUnfolder]: For 314273/314300 co-relation queries the response was YES. [2020-10-16 01:49:11,762 INFO L80 FinitePrefix]: Finished finitePrefix Result has 187208 conditions, 26637 events. 16594/26637 cut-off events. For 314273/314300 co-relation queries the response was YES. Maximal size of possible extension queue 2007. Compared 217748 event pairs, 1978 based on Foata normal form. 52/26627 useless extension candidates. Maximal degree in co-relation 187151. Up to 7309 conditions per place. [2020-10-16 01:49:11,866 INFO L132 encePairwiseOnDemand]: 169/182 looper letters, 219 selfloop transitions, 271 changer transitions 9/504 dead transitions. [2020-10-16 01:49:11,866 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 504 transitions, 7739 flow [2020-10-16 01:49:11,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-16 01:49:11,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-16 01:49:11,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 3480 transitions. [2020-10-16 01:49:11,869 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5975274725274725 [2020-10-16 01:49:11,869 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 3480 transitions. [2020-10-16 01:49:11,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 3480 transitions. [2020-10-16 01:49:11,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:49:11,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 3480 transitions. [2020-10-16 01:49:11,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 33 states. [2020-10-16 01:49:11,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 33 states. [2020-10-16 01:49:11,876 INFO L81 ComplementDD]: Finished complementDD. Result 33 states. [2020-10-16 01:49:11,877 INFO L185 Difference]: Start difference. First operand has 138 places, 307 transitions, 4680 flow. Second operand 32 states and 3480 transitions. [2020-10-16 01:49:11,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 504 transitions, 7739 flow [2020-10-16 01:49:17,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 504 transitions, 7340 flow, removed 169 selfloop flow, removed 7 redundant places. [2020-10-16 01:49:17,466 INFO L241 Difference]: Finished difference. Result has 163 places, 336 transitions, 5406 flow [2020-10-16 01:49:17,467 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=4327, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=5406, PETRI_PLACES=163, PETRI_TRANSITIONS=336} [2020-10-16 01:49:17,467 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 129 predicate places. [2020-10-16 01:49:17,467 INFO L481 AbstractCegarLoop]: Abstraction has has 163 places, 336 transitions, 5406 flow [2020-10-16 01:49:17,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 01:49:17,467 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:49:17,467 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:49:17,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-10-16 01:49:17,682 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 01:49:17,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:49:17,682 INFO L82 PathProgramCache]: Analyzing trace with hash 247634402, now seen corresponding path program 1 times [2020-10-16 01:49:17,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:49:17,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423700825] [2020-10-16 01:49:17,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:49:17,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:49:17,716 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 01:49:17,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423700825] [2020-10-16 01:49:17,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:49:17,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:49:17,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192719827] [2020-10-16 01:49:17,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:49:17,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:49:17,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:49:17,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:49:17,719 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 182 [2020-10-16 01:49:17,719 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 336 transitions, 5406 flow. Second operand 5 states. [2020-10-16 01:49:17,719 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:49:17,719 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 182 [2020-10-16 01:49:17,720 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:49:22,874 INFO L129 PetriNetUnfolder]: 18000/30229 cut-off events. [2020-10-16 01:49:22,875 INFO L130 PetriNetUnfolder]: For 452080/460897 co-relation queries the response was YES. [2020-10-16 01:49:23,226 INFO L80 FinitePrefix]: Finished finitePrefix Result has 232037 conditions, 30229 events. 18000/30229 cut-off events. For 452080/460897 co-relation queries the response was YES. Maximal size of possible extension queue 3831. Compared 291769 event pairs, 2363 based on Foata normal form. 809/30223 useless extension candidates. Maximal degree in co-relation 231976. Up to 11101 conditions per place. [2020-10-16 01:49:23,357 INFO L132 encePairwiseOnDemand]: 174/182 looper letters, 345 selfloop transitions, 296 changer transitions 25/681 dead transitions. [2020-10-16 01:49:23,357 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 681 transitions, 12156 flow [2020-10-16 01:49:23,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 01:49:23,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 01:49:23,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 859 transitions. [2020-10-16 01:49:23,358 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.67425431711146 [2020-10-16 01:49:23,358 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 859 transitions. [2020-10-16 01:49:23,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 859 transitions. [2020-10-16 01:49:23,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:49:23,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 859 transitions. [2020-10-16 01:49:23,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 01:49:23,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 01:49:23,360 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 01:49:23,361 INFO L185 Difference]: Start difference. First operand has 163 places, 336 transitions, 5406 flow. Second operand 7 states and 859 transitions. [2020-10-16 01:49:23,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 681 transitions, 12156 flow [2020-10-16 01:49:33,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 681 transitions, 11736 flow, removed 63 selfloop flow, removed 17 redundant places. [2020-10-16 01:49:33,566 INFO L241 Difference]: Finished difference. Result has 156 places, 528 transitions, 9711 flow [2020-10-16 01:49:33,566 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=5182, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9711, PETRI_PLACES=156, PETRI_TRANSITIONS=528} [2020-10-16 01:49:33,567 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 122 predicate places. [2020-10-16 01:49:33,567 INFO L481 AbstractCegarLoop]: Abstraction has has 156 places, 528 transitions, 9711 flow [2020-10-16 01:49:33,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:49:33,567 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:49:33,567 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:49:33,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-16 01:49:33,567 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 01:49:33,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:49:33,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1960634788, now seen corresponding path program 1 times [2020-10-16 01:49:33,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:49:33,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444751176] [2020-10-16 01:49:33,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:49:33,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:49:33,661 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:49:33,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444751176] [2020-10-16 01:49:33,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614583799] [2020-10-16 01:49:33,662 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 01:49:33,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:49:33,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 01:49:33,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 01:49:33,856 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:49:33,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 01:49:33,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-16 01:49:33,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546584870] [2020-10-16 01:49:33,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-16 01:49:33,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:49:33,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-16 01:49:33,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2020-10-16 01:49:33,860 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 182 [2020-10-16 01:49:33,861 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 528 transitions, 9711 flow. Second operand 19 states. [2020-10-16 01:49:33,861 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:49:33,861 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 182 [2020-10-16 01:49:33,861 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:50:01,472 INFO L129 PetriNetUnfolder]: 57611/97358 cut-off events. [2020-10-16 01:50:01,473 INFO L130 PetriNetUnfolder]: For 1593512/1593572 co-relation queries the response was YES. [2020-10-16 01:50:02,559 INFO L80 FinitePrefix]: Finished finitePrefix Result has 808845 conditions, 97358 events. 57611/97358 cut-off events. For 1593512/1593572 co-relation queries the response was YES. Maximal size of possible extension queue 8605. Compared 1006369 event pairs, 8410 based on Foata normal form. 190/97443 useless extension candidates. Maximal degree in co-relation 808781. Up to 31517 conditions per place. [2020-10-16 01:50:02,989 INFO L132 encePairwiseOnDemand]: 171/182 looper letters, 1675 selfloop transitions, 949 changer transitions 8/2637 dead transitions. [2020-10-16 01:50:02,989 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 2637 transitions, 54143 flow [2020-10-16 01:50:02,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-16 01:50:02,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-16 01:50:02,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 3384 transitions. [2020-10-16 01:50:02,993 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5997873094647288 [2020-10-16 01:50:02,993 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 3384 transitions. [2020-10-16 01:50:02,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 3384 transitions. [2020-10-16 01:50:02,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:50:02,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 3384 transitions. [2020-10-16 01:50:02,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 32 states. [2020-10-16 01:50:03,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 32 states. [2020-10-16 01:50:03,000 INFO L81 ComplementDD]: Finished complementDD. Result 32 states. [2020-10-16 01:50:03,000 INFO L185 Difference]: Start difference. First operand has 156 places, 528 transitions, 9711 flow. Second operand 31 states and 3384 transitions. [2020-10-16 01:50:03,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 2637 transitions, 54143 flow [2020-10-16 01:53:01,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 2637 transitions, 53949 flow, removed 97 selfloop flow, removed 0 redundant places. [2020-10-16 01:53:01,468 INFO L241 Difference]: Finished difference. Result has 208 places, 1463 transitions, 32696 flow [2020-10-16 01:53:01,469 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=9675, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=32696, PETRI_PLACES=208, PETRI_TRANSITIONS=1463} [2020-10-16 01:53:01,469 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 174 predicate places. [2020-10-16 01:53:01,469 INFO L481 AbstractCegarLoop]: Abstraction has has 208 places, 1463 transitions, 32696 flow [2020-10-16 01:53:01,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-16 01:53:01,469 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:53:01,469 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:53:01,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 01:53:01,684 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 01:53:01,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:53:01,684 INFO L82 PathProgramCache]: Analyzing trace with hash 549469564, now seen corresponding path program 2 times [2020-10-16 01:53:01,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:53:01,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282230897] [2020-10-16 01:53:01,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:53:01,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:53:01,758 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:53:01,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282230897] [2020-10-16 01:53:01,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575521346] [2020-10-16 01:53:01,759 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 01:53:01,818 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 01:53:01,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 01:53:01,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 01:53:01,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 01:53:01,929 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 01:53:01,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 01:53:01,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2020-10-16 01:53:01,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628653799] [2020-10-16 01:53:01,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-16 01:53:01,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:53:01,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-16 01:53:01,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2020-10-16 01:53:01,932 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 182 [2020-10-16 01:53:01,933 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 1463 transitions, 32696 flow. Second operand 18 states. [2020-10-16 01:53:01,933 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:53:01,934 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 182 [2020-10-16 01:53:01,934 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:54:04,369 INFO L129 PetriNetUnfolder]: 72237/124349 cut-off events. [2020-10-16 01:54:04,370 INFO L130 PetriNetUnfolder]: For 3584025/3584254 co-relation queries the response was YES. [2020-10-16 01:54:06,295 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1233592 conditions, 124349 events. 72237/124349 cut-off events. For 3584025/3584254 co-relation queries the response was YES. Maximal size of possible extension queue 11159. Compared 1357476 event pairs, 7264 based on Foata normal form. 1011/125271 useless extension candidates. Maximal degree in co-relation 1233504. Up to 42377 conditions per place. [2020-10-16 01:54:06,941 INFO L132 encePairwiseOnDemand]: 170/182 looper letters, 605 selfloop transitions, 2272 changer transitions 164/3046 dead transitions. [2020-10-16 01:54:06,941 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 3046 transitions, 72926 flow [2020-10-16 01:54:06,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-16 01:54:06,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-16 01:54:06,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 3684 transitions. [2020-10-16 01:54:06,945 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5953458306399483 [2020-10-16 01:54:06,945 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 3684 transitions. [2020-10-16 01:54:06,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 3684 transitions. [2020-10-16 01:54:06,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:54:06,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 3684 transitions. [2020-10-16 01:54:06,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 35 states. [2020-10-16 01:54:06,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 35 states. [2020-10-16 01:54:06,953 INFO L81 ComplementDD]: Finished complementDD. Result 35 states. [2020-10-16 01:54:06,953 INFO L185 Difference]: Start difference. First operand has 208 places, 1463 transitions, 32696 flow. Second operand 34 states and 3684 transitions. [2020-10-16 01:54:06,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 3046 transitions, 72926 flow Received shutdown request... [2020-10-16 02:01:33,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-10-16 02:01:33,541 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-16 02:01:33,545 WARN L235 ceAbstractionStarter]: Timeout [2020-10-16 02:01:33,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:01:33 BasicIcfg [2020-10-16 02:01:33,545 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 02:01:33,547 INFO L168 Benchmark]: Toolchain (without parser) took 817839.93 ms. Allocated memory was 251.1 MB in the beginning and 6.6 GB in the end (delta: 6.3 GB). Free memory was 206.1 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 02:01:33,547 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 251.1 MB. Free memory is still 227.5 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 02:01:33,548 INFO L168 Benchmark]: CACSL2BoogieTranslator took 669.87 ms. Allocated memory was 251.1 MB in the beginning and 318.2 MB in the end (delta: 67.1 MB). Free memory was 206.1 MB in the beginning and 273.6 MB in the end (delta: -67.5 MB). Peak memory consumption was 33.6 MB. Max. memory is 14.2 GB. [2020-10-16 02:01:33,548 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.60 ms. Allocated memory is still 318.2 MB. Free memory was 273.6 MB in the beginning and 271.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 02:01:33,549 INFO L168 Benchmark]: Boogie Preprocessor took 28.30 ms. Allocated memory is still 318.2 MB. Free memory is still 271.1 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 02:01:33,549 INFO L168 Benchmark]: RCFGBuilder took 375.87 ms. Allocated memory is still 318.2 MB. Free memory was 271.1 MB in the beginning and 249.2 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-16 02:01:33,550 INFO L168 Benchmark]: TraceAbstraction took 816711.88 ms. Allocated memory was 318.2 MB in the beginning and 6.6 GB in the end (delta: 6.2 GB). Free memory was 249.2 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 02:01:33,552 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 251.1 MB. Free memory is still 227.5 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 669.87 ms. Allocated memory was 251.1 MB in the beginning and 318.2 MB in the end (delta: 67.1 MB). Free memory was 206.1 MB in the beginning and 273.6 MB in the end (delta: -67.5 MB). Peak memory consumption was 33.6 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 47.60 ms. Allocated memory is still 318.2 MB. Free memory was 273.6 MB in the beginning and 271.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 28.30 ms. Allocated memory is still 318.2 MB. Free memory is still 271.1 MB. There was no memory consumed. Max. memory is 14.2 GB. * RCFGBuilder took 375.87 ms. Allocated memory is still 318.2 MB. Free memory was 271.1 MB in the beginning and 249.2 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 816711.88 ms. Allocated memory was 318.2 MB in the beginning and 6.6 GB in the end (delta: 6.2 GB). Free memory was 249.2 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 475 VarBasedMoverChecksPositive, 3 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 3 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 3 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.9s, 63 PlacesBefore, 17 PlacesAfterwards, 60 TransitionsBefore, 11 TransitionsAfterwards, 692 CoEnabledTransitionPairs, 6 FixpointIterations, 26 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 5 ConcurrentYvCompositions, 3 ChoiceCompositions, 61 TotalNumberOfCompositions, 623 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 743 VarBasedMoverChecksPositive, 11 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 11 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 26 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.4s, 72 PlacesBefore, 24 PlacesAfterwards, 67 TransitionsBefore, 16 TransitionsAfterwards, 1108 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 6 ConcurrentYvCompositions, 3 ChoiceCompositions, 62 TotalNumberOfCompositions, 1464 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1022 VarBasedMoverChecksPositive, 19 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 19 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 48 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.2s, 81 PlacesBefore, 29 PlacesAfterwards, 74 TransitionsBefore, 19 TransitionsAfterwards, 1608 CoEnabledTransitionPairs, 5 FixpointIterations, 21 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 6 ConcurrentYvCompositions, 3 ChoiceCompositions, 62 TotalNumberOfCompositions, 2245 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1407 VarBasedMoverChecksPositive, 25 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 25 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 79 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.4s, 90 PlacesBefore, 34 PlacesAfterwards, 81 TransitionsBefore, 22 TransitionsAfterwards, 2192 CoEnabledTransitionPairs, 6 FixpointIterations, 24 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 3 ConcurrentYvCompositions, 3 ChoiceCompositions, 67 TotalNumberOfCompositions, 3265 MoverChecksTotal - TimeoutResultAtElement [Line: 679]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 679). Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 58 locations, 1 error locations. Started 4 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 816.4s, OverallIterations: 26, TraceHistogramMax: 4, AutomataDifference: 804.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.2s, HoareTripleCheckerStatistics: 212 SDtfs, 2683 SDslu, 627 SDs, 0 SdLazy, 6300 SolverSat, 570 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 531 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 469 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4831 ImplicationChecksByTransitivity, 6.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32696occurred in iteration=8, 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, 0.3s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 445 NumberOfCodeBlocks, 445 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 374 ConstructedInterpolants, 0 QuantifiedInterpolants, 28748 SizeOfPredicates, 50 NumberOfNonLiveVariables, 1022 ConjunctsInSsa, 91 ConjunctsInUnsatCore, 33 InterpolantComputations, 13 PerfectInterpolantSequences, 31/86 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