/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/fkp2013-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 01:47:50,251 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 01:47:50,254 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 01:47:50,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 01:47:50,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 01:47:50,295 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 01:47:50,297 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 01:47:50,299 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 01:47:50,300 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 01:47:50,301 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 01:47:50,302 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 01:47:50,303 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 01:47:50,303 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 01:47:50,304 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 01:47:50,305 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 01:47:50,307 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 01:47:50,307 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 01:47:50,308 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 01:47:50,310 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 01:47:50,312 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 01:47:50,313 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 01:47:50,314 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 01:47:50,315 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 01:47:50,316 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 01:47:50,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 01:47:50,321 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 01:47:50,322 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 01:47:50,323 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 01:47:50,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 01:47:50,325 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 01:47:50,325 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 01:47:50,325 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 01:47:50,326 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 01:47:50,326 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 01:47:50,327 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 01:47:50,327 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 01:47:50,328 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 01:47:50,350 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 01:47:50,350 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 01:47:50,351 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 01:47:50,352 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 01:47:50,352 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 01:47:50,352 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 01:47:50,352 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 01:47:50,352 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 01:47:50,353 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 01:47:50,353 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 01:47:50,353 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 01:47:50,353 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 01:47:50,353 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 01:47:50,354 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 01:47:50,354 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 01:47:50,354 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 01:47:50,354 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 01:47:50,354 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 01:47:50,355 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 01:47:50,355 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 01:47:50,355 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 01:47:50,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:47:50,355 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 01:47:50,356 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 01:47:50,356 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 01:47:50,356 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 01:47:50,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 01:47:50,356 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 01:47:50,356 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 01:47:50,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 01:47:50,676 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 01:47:50,680 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 01:47:50,681 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 01:47:50,682 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 01:47:50,682 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/fkp2013-2.i [2020-10-16 01:47:50,743 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c75d290b1/ef2215a393354ad1bb4583cdee2426f4/FLAG07dcca6ef [2020-10-16 01:47:51,299 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 01:47:51,300 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/fkp2013-2.i [2020-10-16 01:47:51,316 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c75d290b1/ef2215a393354ad1bb4583cdee2426f4/FLAG07dcca6ef [2020-10-16 01:47:51,583 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c75d290b1/ef2215a393354ad1bb4583cdee2426f4 [2020-10-16 01:47:51,591 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 01:47:51,593 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 01:47:51,594 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 01:47:51,594 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 01:47:51,598 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 01:47:51,600 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:47:51" (1/1) ... [2020-10-16 01:47:51,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15adaa32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:51, skipping insertion in model container [2020-10-16 01:47:51,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:47:51" (1/1) ... [2020-10-16 01:47:51,612 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 01:47:51,674 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 01:47:52,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:47:52,119 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 01:47:52,157 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:47:52,225 INFO L208 MainTranslator]: Completed translation [2020-10-16 01:47:52,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:52 WrapperNode [2020-10-16 01:47:52,225 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 01:47:52,226 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 01:47:52,226 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 01:47:52,226 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 01:47:52,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:52" (1/1) ... [2020-10-16 01:47:52,248 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:52" (1/1) ... [2020-10-16 01:47:52,269 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 01:47:52,269 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 01:47:52,269 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 01:47:52,269 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 01:47:52,279 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:52" (1/1) ... [2020-10-16 01:47:52,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:52" (1/1) ... [2020-10-16 01:47:52,282 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:52" (1/1) ... [2020-10-16 01:47:52,283 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:52" (1/1) ... [2020-10-16 01:47:52,288 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:52" (1/1) ... [2020-10-16 01:47:52,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:52" (1/1) ... [2020-10-16 01:47:52,294 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:52" (1/1) ... [2020-10-16 01:47:52,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 01:47:52,298 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 01:47:52,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 01:47:52,298 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 01:47:52,299 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:52" (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 01:47:52,369 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-16 01:47:52,369 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-16 01:47:52,369 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-16 01:47:52,369 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-16 01:47:52,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 01:47:52,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 01:47:52,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 01:47:52,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 01:47:52,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 01:47:52,371 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 01:47:52,686 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 01:47:52,686 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-16 01:47:52,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:47:52 BoogieIcfgContainer [2020-10-16 01:47:52,688 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 01:47:52,689 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 01:47:52,689 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 01:47:52,693 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 01:47:52,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:47:51" (1/3) ... [2020-10-16 01:47:52,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dd18eb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:47:52, skipping insertion in model container [2020-10-16 01:47:52,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:52" (2/3) ... [2020-10-16 01:47:52,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dd18eb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:47:52, skipping insertion in model container [2020-10-16 01:47:52,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:47:52" (3/3) ... [2020-10-16 01:47:52,697 INFO L111 eAbstractionObserver]: Analyzing ICFG fkp2013-2.i [2020-10-16 01:47:52,706 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 01:47:52,714 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 01:47:52,715 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 01:47:52,740 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:52,741 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:52,741 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:52,741 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:52,742 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:52,742 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:52,742 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:52,743 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:52,743 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:52,743 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:52,744 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:52,744 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:52,744 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:52,744 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:52,744 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:52,745 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:52,745 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:52,745 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:52,745 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:52,745 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:52,746 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:52,749 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:52,750 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:52,750 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:52,750 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:52,750 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:52,756 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:52,757 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:52,757 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:52,757 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:52,757 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:52,758 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:52,775 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 01:47:52,797 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:47:52,798 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:47:52,798 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:47:52,798 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:47:52,798 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:47:52,798 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:47:52,798 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:47:52,799 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:47:52,814 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 55 places, 51 transitions, 112 flow [2020-10-16 01:47:52,869 INFO L129 PetriNetUnfolder]: 3/61 cut-off events. [2020-10-16 01:47:52,870 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:47:52,875 INFO L80 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 61 events. 3/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 100 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 49. Up to 4 conditions per place. [2020-10-16 01:47:52,876 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 51 transitions, 112 flow [2020-10-16 01:47:52,882 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 50 transitions, 108 flow [2020-10-16 01:47:52,884 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:47:52,886 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 50 transitions, 108 flow [2020-10-16 01:47:52,889 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 50 transitions, 108 flow [2020-10-16 01:47:52,889 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 54 places, 50 transitions, 108 flow [2020-10-16 01:47:52,906 INFO L129 PetriNetUnfolder]: 3/61 cut-off events. [2020-10-16 01:47:52,907 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:47:52,908 INFO L80 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 61 events. 3/61 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. 0/55 useless extension candidates. Maximal degree in co-relation 49. Up to 4 conditions per place. [2020-10-16 01:47:52,910 INFO L117 LiptonReduction]: Number of co-enabled transitions 692 [2020-10-16 01:47:53,753 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-10-16 01:47:54,003 INFO L132 LiptonReduction]: Checked pairs total: 670 [2020-10-16 01:47:54,003 INFO L134 LiptonReduction]: Total number of compositions: 47 [2020-10-16 01:47:54,006 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1124 [2020-10-16 01:47:54,011 INFO L129 PetriNetUnfolder]: 0/3 cut-off events. [2020-10-16 01:47:54,011 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:47:54,011 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:47:54,012 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2020-10-16 01:47:54,013 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 01:47:54,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:47:54,018 INFO L82 PathProgramCache]: Analyzing trace with hash 208056, now seen corresponding path program 1 times [2020-10-16 01:47:54,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:47:54,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826997916] [2020-10-16 01:47:54,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:47:54,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:47:54,206 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 01:47:54,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826997916] [2020-10-16 01:47:54,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:47:54,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:47:54,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659907814] [2020-10-16 01:47:54,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:47:54,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:47:54,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:47:54,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:47:54,239 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 98 [2020-10-16 01:47:54,241 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 11 transitions, 30 flow. Second operand 3 states. [2020-10-16 01:47:54,242 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:47:54,242 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 98 [2020-10-16 01:47:54,243 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:47:54,277 INFO L129 PetriNetUnfolder]: 1/15 cut-off events. [2020-10-16 01:47:54,277 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:47:54,277 INFO L80 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 15 events. 1/15 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 19 event pairs, 0 based on Foata normal form. 0/11 useless extension candidates. Maximal degree in co-relation 21. Up to 5 conditions per place. [2020-10-16 01:47:54,279 INFO L132 encePairwiseOnDemand]: 95/98 looper letters, 3 selfloop transitions, 2 changer transitions 0/12 dead transitions. [2020-10-16 01:47:54,279 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 12 transitions, 42 flow [2020-10-16 01:47:54,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:47:54,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:47:54,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 219 transitions. [2020-10-16 01:47:54,294 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7448979591836735 [2020-10-16 01:47:54,294 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 219 transitions. [2020-10-16 01:47:54,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 219 transitions. [2020-10-16 01:47:54,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:47:54,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 219 transitions. [2020-10-16 01:47:54,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:47:54,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:47:54,309 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:47:54,312 INFO L185 Difference]: Start difference. First operand has 17 places, 11 transitions, 30 flow. Second operand 3 states and 219 transitions. [2020-10-16 01:47:54,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 12 transitions, 42 flow [2020-10-16 01:47:54,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 12 transitions, 41 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:47:54,318 INFO L241 Difference]: Finished difference. Result has 19 places, 11 transitions, 37 flow [2020-10-16 01:47:54,321 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, 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 01:47:54,322 INFO L342 CegarLoopForPetriNet]: 17 programPoint places, 2 predicate places. [2020-10-16 01:47:54,323 INFO L481 AbstractCegarLoop]: Abstraction has has 19 places, 11 transitions, 37 flow [2020-10-16 01:47:54,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:47:54,323 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:47:54,323 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:47:54,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 01:47:54,324 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 01:47:54,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:47:54,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1139052385, now seen corresponding path program 1 times [2020-10-16 01:47:54,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:47:54,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426378440] [2020-10-16 01:47:54,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:47:54,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:47:54,392 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 01:47:54,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426378440] [2020-10-16 01:47:54,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:47:54,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:47:54,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217964360] [2020-10-16 01:47:54,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:47:54,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:47:54,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:47:54,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:47:54,397 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 98 [2020-10-16 01:47:54,398 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 11 transitions, 37 flow. Second operand 4 states. [2020-10-16 01:47:54,398 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:47:54,398 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 98 [2020-10-16 01:47:54,398 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:47:54,419 INFO L129 PetriNetUnfolder]: 1/14 cut-off events. [2020-10-16 01:47:54,419 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 01:47:54,420 INFO L80 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 14 events. 1/14 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 13 event pairs, 0 based on Foata normal form. 1/12 useless extension candidates. Maximal degree in co-relation 23. Up to 3 conditions per place. [2020-10-16 01:47:54,420 INFO L132 encePairwiseOnDemand]: 95/98 looper letters, 2 selfloop transitions, 2 changer transitions 0/11 dead transitions. [2020-10-16 01:47:54,420 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 11 transitions, 43 flow [2020-10-16 01:47:54,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:47:54,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:47:54,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 289 transitions. [2020-10-16 01:47:54,424 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7372448979591837 [2020-10-16 01:47:54,425 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 289 transitions. [2020-10-16 01:47:54,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 289 transitions. [2020-10-16 01:47:54,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:47:54,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 289 transitions. [2020-10-16 01:47:54,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:47:54,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:47:54,429 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:47:54,430 INFO L185 Difference]: Start difference. First operand has 19 places, 11 transitions, 37 flow. Second operand 4 states and 289 transitions. [2020-10-16 01:47:54,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 11 transitions, 43 flow [2020-10-16 01:47:54,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 11 transitions, 37 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 01:47:54,431 INFO L241 Difference]: Finished difference. Result has 18 places, 10 transitions, 31 flow [2020-10-16 01:47:54,431 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, 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=31, PETRI_PLACES=18, PETRI_TRANSITIONS=10} [2020-10-16 01:47:54,432 INFO L342 CegarLoopForPetriNet]: 17 programPoint places, 1 predicate places. [2020-10-16 01:47:54,432 INFO L481 AbstractCegarLoop]: Abstraction has has 18 places, 10 transitions, 31 flow [2020-10-16 01:47:54,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:47:54,432 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:47:54,433 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-16 01:47:54,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 01:47:54,433 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 01:47:54,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:47:54,434 INFO L82 PathProgramCache]: Analyzing trace with hash -950894116, now seen corresponding path program 1 times [2020-10-16 01:47:54,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:47:54,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465848709] [2020-10-16 01:47:54,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:47:54,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 01:47:54,459 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 01:47:54,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 01:47:54,472 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 01:47:54,510 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 01:47:54,510 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 01:47:54,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 01:47:54,512 WARN L371 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 01:47:54,514 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-16 01:47:54,525 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,526 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,527 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,527 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,528 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,528 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,528 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,528 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,528 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,529 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,529 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,529 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,529 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,529 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,530 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,530 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,530 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,530 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,531 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,531 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,531 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,531 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,533 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,533 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,534 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,534 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,534 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,534 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,534 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,535 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,535 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,535 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,535 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,535 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,538 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,538 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,539 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,539 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,540 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,540 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,543 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,543 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,544 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,544 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,544 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,545 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,545 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,549 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,550 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,550 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,550 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,550 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,552 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,552 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,552 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,553 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,553 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,553 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,554 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,554 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,555 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,555 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,555 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,555 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:54,557 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-16 01:47:54,557 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:47:54,557 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:47:54,557 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:47:54,558 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:47:54,558 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:47:54,558 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:47:54,558 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:47:54,558 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:47:54,560 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 69 transitions, 162 flow [2020-10-16 01:47:54,577 INFO L129 PetriNetUnfolder]: 4/83 cut-off events. [2020-10-16 01:47:54,577 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 01:47:54,579 INFO L80 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 83 events. 4/83 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 141 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 92. Up to 6 conditions per place. [2020-10-16 01:47:54,579 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 69 transitions, 162 flow [2020-10-16 01:47:54,580 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 57 transitions, 129 flow [2020-10-16 01:47:54,580 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:47:54,580 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 57 transitions, 129 flow [2020-10-16 01:47:54,581 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 63 places, 57 transitions, 129 flow [2020-10-16 01:47:54,581 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 63 places, 57 transitions, 129 flow [2020-10-16 01:47:54,595 INFO L129 PetriNetUnfolder]: 4/83 cut-off events. [2020-10-16 01:47:54,595 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 01:47:54,596 INFO L80 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 83 events. 4/83 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 147 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 75. Up to 6 conditions per place. [2020-10-16 01:47:54,598 INFO L117 LiptonReduction]: Number of co-enabled transitions 1108 [2020-10-16 01:47:55,399 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-16 01:47:55,493 INFO L132 LiptonReduction]: Checked pairs total: 1246 [2020-10-16 01:47:55,493 INFO L134 LiptonReduction]: Total number of compositions: 49 [2020-10-16 01:47:55,494 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 914 [2020-10-16 01:47:55,495 INFO L129 PetriNetUnfolder]: 0/4 cut-off events. [2020-10-16 01:47:55,496 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:47:55,496 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:47:55,496 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2020-10-16 01:47:55,496 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:47:55,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:47:55,497 INFO L82 PathProgramCache]: Analyzing trace with hash 340131, now seen corresponding path program 1 times [2020-10-16 01:47:55,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:47:55,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700083068] [2020-10-16 01:47:55,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:47:55,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:47:55,524 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 01:47:55,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700083068] [2020-10-16 01:47:55,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:47:55,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:47:55,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414997484] [2020-10-16 01:47:55,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:47:55,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:47:55,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:47:55,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:47:55,527 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 118 [2020-10-16 01:47:55,528 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 16 transitions, 47 flow. Second operand 3 states. [2020-10-16 01:47:55,528 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:47:55,528 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 118 [2020-10-16 01:47:55,528 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:47:55,554 INFO L129 PetriNetUnfolder]: 20/58 cut-off events. [2020-10-16 01:47:55,554 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 01:47:55,555 INFO L80 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 58 events. 20/58 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 156 event pairs, 6 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 105. Up to 31 conditions per place. [2020-10-16 01:47:55,555 INFO L132 encePairwiseOnDemand]: 114/118 looper letters, 9 selfloop transitions, 3 changer transitions 0/21 dead transitions. [2020-10-16 01:47:55,556 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 21 transitions, 81 flow [2020-10-16 01:47:55,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:47:55,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:47:55,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 265 transitions. [2020-10-16 01:47:55,558 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.748587570621469 [2020-10-16 01:47:55,559 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 265 transitions. [2020-10-16 01:47:55,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 265 transitions. [2020-10-16 01:47:55,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:47:55,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 265 transitions. [2020-10-16 01:47:55,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:47:55,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:47:55,562 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:47:55,562 INFO L185 Difference]: Start difference. First operand has 24 places, 16 transitions, 47 flow. Second operand 3 states and 265 transitions. [2020-10-16 01:47:55,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 21 transitions, 81 flow [2020-10-16 01:47:55,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 21 transitions, 78 flow, removed 1 selfloop flow, removed 1 redundant places. [2020-10-16 01:47:55,567 INFO L241 Difference]: Finished difference. Result has 26 places, 18 transitions, 63 flow [2020-10-16 01:47:55,567 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, 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 01:47:55,568 INFO L342 CegarLoopForPetriNet]: 24 programPoint places, 2 predicate places. [2020-10-16 01:47:55,568 INFO L481 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 63 flow [2020-10-16 01:47:55,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:47:55,568 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:47:55,568 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:47:55,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 01:47:55,569 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:47:55,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:47:55,570 INFO L82 PathProgramCache]: Analyzing trace with hash 361225747, now seen corresponding path program 1 times [2020-10-16 01:47:55,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:47:55,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5994651] [2020-10-16 01:47:55,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:47:55,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:47:55,672 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 01:47:55,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5994651] [2020-10-16 01:47:55,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:47:55,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:47:55,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112495809] [2020-10-16 01:47:55,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:47:55,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:47:55,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:47:55,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:47:55,677 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 118 [2020-10-16 01:47:55,677 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 18 transitions, 63 flow. Second operand 5 states. [2020-10-16 01:47:55,677 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:47:55,677 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 118 [2020-10-16 01:47:55,678 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:47:55,785 INFO L129 PetriNetUnfolder]: 18/64 cut-off events. [2020-10-16 01:47:55,785 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 01:47:55,785 INFO L80 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 64 events. 18/64 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 187 event pairs, 4 based on Foata normal form. 3/60 useless extension candidates. Maximal degree in co-relation 148. Up to 22 conditions per place. [2020-10-16 01:47:55,787 INFO L132 encePairwiseOnDemand]: 113/118 looper letters, 13 selfloop transitions, 7 changer transitions 0/28 dead transitions. [2020-10-16 01:47:55,787 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 28 transitions, 130 flow [2020-10-16 01:47:55,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 01:47:55,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 01:47:55,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 513 transitions. [2020-10-16 01:47:55,792 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7245762711864406 [2020-10-16 01:47:55,792 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 513 transitions. [2020-10-16 01:47:55,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 513 transitions. [2020-10-16 01:47:55,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:47:55,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 513 transitions. [2020-10-16 01:47:55,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 01:47:55,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 01:47:55,797 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 01:47:55,797 INFO L185 Difference]: Start difference. First operand has 26 places, 18 transitions, 63 flow. Second operand 6 states and 513 transitions. [2020-10-16 01:47:55,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 28 transitions, 130 flow [2020-10-16 01:47:55,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 28 transitions, 126 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:47:55,799 INFO L241 Difference]: Finished difference. Result has 33 places, 21 transitions, 99 flow [2020-10-16 01:47:55,800 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=99, PETRI_PLACES=33, PETRI_TRANSITIONS=21} [2020-10-16 01:47:55,800 INFO L342 CegarLoopForPetriNet]: 24 programPoint places, 9 predicate places. [2020-10-16 01:47:55,800 INFO L481 AbstractCegarLoop]: Abstraction has has 33 places, 21 transitions, 99 flow [2020-10-16 01:47:55,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:47:55,800 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:47:55,801 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:47:55,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 01:47:55,801 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:47:55,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:47:55,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1537782149, now seen corresponding path program 1 times [2020-10-16 01:47:55,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:47:55,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403018094] [2020-10-16 01:47:55,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:47:55,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:47:55,842 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 01:47:55,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403018094] [2020-10-16 01:47:55,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:47:55,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:47:55,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2158573] [2020-10-16 01:47:55,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:47:55,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:47:55,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:47:55,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:47:55,845 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 118 [2020-10-16 01:47:55,846 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 21 transitions, 99 flow. Second operand 5 states. [2020-10-16 01:47:55,846 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:47:55,846 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 118 [2020-10-16 01:47:55,846 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:47:55,929 INFO L129 PetriNetUnfolder]: 22/82 cut-off events. [2020-10-16 01:47:55,929 INFO L130 PetriNetUnfolder]: For 71/71 co-relation queries the response was YES. [2020-10-16 01:47:55,930 INFO L80 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 82 events. 22/82 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 286 event pairs, 5 based on Foata normal form. 4/76 useless extension candidates. Maximal degree in co-relation 222. Up to 21 conditions per place. [2020-10-16 01:47:55,931 INFO L132 encePairwiseOnDemand]: 113/118 looper letters, 14 selfloop transitions, 9 changer transitions 0/31 dead transitions. [2020-10-16 01:47:55,931 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 31 transitions, 188 flow [2020-10-16 01:47:55,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 01:47:55,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 01:47:55,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 514 transitions. [2020-10-16 01:47:55,934 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7259887005649718 [2020-10-16 01:47:55,934 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 514 transitions. [2020-10-16 01:47:55,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 514 transitions. [2020-10-16 01:47:55,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:47:55,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 514 transitions. [2020-10-16 01:47:55,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 01:47:55,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 01:47:55,938 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 01:47:55,938 INFO L185 Difference]: Start difference. First operand has 33 places, 21 transitions, 99 flow. Second operand 6 states and 514 transitions. [2020-10-16 01:47:55,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 31 transitions, 188 flow [2020-10-16 01:47:55,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 31 transitions, 177 flow, removed 2 selfloop flow, removed 2 redundant places. [2020-10-16 01:47:55,941 INFO L241 Difference]: Finished difference. Result has 39 places, 24 transitions, 141 flow [2020-10-16 01:47:55,941 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=141, PETRI_PLACES=39, PETRI_TRANSITIONS=24} [2020-10-16 01:47:55,942 INFO L342 CegarLoopForPetriNet]: 24 programPoint places, 15 predicate places. [2020-10-16 01:47:55,942 INFO L481 AbstractCegarLoop]: Abstraction has has 39 places, 24 transitions, 141 flow [2020-10-16 01:47:55,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:47:55,942 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:47:55,942 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-10-16 01:47:55,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 01:47:55,943 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:47:55,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:47:55,943 INFO L82 PathProgramCache]: Analyzing trace with hash -429286856, now seen corresponding path program 1 times [2020-10-16 01:47:55,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:47:55,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991918607] [2020-10-16 01:47:55,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:47:55,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 01:47:55,959 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 01:47:55,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 01:47:55,985 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 01:47:55,994 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 01:47:55,994 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 01:47:55,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 01:47:55,995 WARN L371 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 01:47:55,996 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-16 01:47:56,005 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,005 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,005 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,005 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,005 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,006 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,006 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,006 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,006 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,006 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,006 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,007 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,007 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,007 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,007 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,007 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,007 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,008 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,008 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,008 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,008 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,008 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,008 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,009 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,009 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,009 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,009 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,010 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,010 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,010 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,010 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,010 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,010 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,010 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,011 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,011 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,011 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,011 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,011 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,012 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,012 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,012 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,012 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,012 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,012 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,013 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,013 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,013 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,013 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,013 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,013 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,014 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,014 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,014 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,014 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,014 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,015 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,015 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,015 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,015 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,015 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,015 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,016 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,016 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,016 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,016 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,017 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,017 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,018 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,018 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,019 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,019 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,019 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,020 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,020 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,021 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,021 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,021 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,022 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,022 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,022 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,023 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,023 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,023 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,024 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,024 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,024 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,024 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,025 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,025 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,026 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,026 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,026 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,026 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,027 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,027 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:56,028 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-16 01:47:56,028 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:47:56,028 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:47:56,028 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:47:56,028 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:47:56,029 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:47:56,029 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:47:56,029 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:47:56,029 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:47:56,031 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 87 transitions, 216 flow [2020-10-16 01:47:56,046 INFO L129 PetriNetUnfolder]: 5/105 cut-off events. [2020-10-16 01:47:56,046 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 01:47:56,047 INFO L80 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 105 events. 5/105 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 187 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 119. Up to 8 conditions per place. [2020-10-16 01:47:56,048 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 87 transitions, 216 flow [2020-10-16 01:47:56,049 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 64 transitions, 152 flow [2020-10-16 01:47:56,049 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:47:56,049 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 64 transitions, 152 flow [2020-10-16 01:47:56,049 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 64 transitions, 152 flow [2020-10-16 01:47:56,049 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 72 places, 64 transitions, 152 flow [2020-10-16 01:47:56,064 INFO L129 PetriNetUnfolder]: 5/105 cut-off events. [2020-10-16 01:47:56,064 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 01:47:56,065 INFO L80 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 105 events. 5/105 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 178 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 102. Up to 8 conditions per place. [2020-10-16 01:47:56,068 INFO L117 LiptonReduction]: Number of co-enabled transitions 1608 [2020-10-16 01:47:57,035 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-16 01:47:57,093 INFO L132 LiptonReduction]: Checked pairs total: 2267 [2020-10-16 01:47:57,093 INFO L134 LiptonReduction]: Total number of compositions: 52 [2020-10-16 01:47:57,094 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1045 [2020-10-16 01:47:57,095 INFO L129 PetriNetUnfolder]: 0/3 cut-off events. [2020-10-16 01:47:57,095 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:47:57,095 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:47:57,095 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2020-10-16 01:47:57,096 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 01:47:57,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:47:57,096 INFO L82 PathProgramCache]: Analyzing trace with hash 498794, now seen corresponding path program 1 times [2020-10-16 01:47:57,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:47:57,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227262397] [2020-10-16 01:47:57,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:47:57,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:47:57,128 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 01:47:57,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227262397] [2020-10-16 01:47:57,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:47:57,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:47:57,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902133902] [2020-10-16 01:47:57,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:47:57,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:47:57,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:47:57,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:47:57,130 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 139 [2020-10-16 01:47:57,130 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 19 transitions, 62 flow. Second operand 3 states. [2020-10-16 01:47:57,131 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:47:57,131 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 139 [2020-10-16 01:47:57,131 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:47:57,188 INFO L129 PetriNetUnfolder]: 112/205 cut-off events. [2020-10-16 01:47:57,189 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 01:47:57,190 INFO L80 FinitePrefix]: Finished finitePrefix Result has 410 conditions, 205 events. 112/205 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 724 event pairs, 43 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 399. Up to 153 conditions per place. [2020-10-16 01:47:57,192 INFO L132 encePairwiseOnDemand]: 134/139 looper letters, 12 selfloop transitions, 4 changer transitions 0/26 dead transitions. [2020-10-16 01:47:57,192 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 26 transitions, 108 flow [2020-10-16 01:47:57,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:47:57,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:47:57,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 308 transitions. [2020-10-16 01:47:57,194 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7386091127098321 [2020-10-16 01:47:57,194 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 308 transitions. [2020-10-16 01:47:57,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 308 transitions. [2020-10-16 01:47:57,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:47:57,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 308 transitions. [2020-10-16 01:47:57,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:47:57,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:47:57,197 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:47:57,197 INFO L185 Difference]: Start difference. First operand has 29 places, 19 transitions, 62 flow. Second operand 3 states and 308 transitions. [2020-10-16 01:47:57,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 26 transitions, 108 flow [2020-10-16 01:47:57,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 26 transitions, 101 flow, removed 3 selfloop flow, removed 1 redundant places. [2020-10-16 01:47:57,199 INFO L241 Difference]: Finished difference. Result has 31 places, 22 transitions, 81 flow [2020-10-16 01:47:57,199 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, 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 01:47:57,199 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2020-10-16 01:47:57,199 INFO L481 AbstractCegarLoop]: Abstraction has has 31 places, 22 transitions, 81 flow [2020-10-16 01:47:57,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:47:57,200 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:47:57,200 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:47:57,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 01:47:57,200 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 01:47:57,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:47:57,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1496123826, now seen corresponding path program 1 times [2020-10-16 01:47:57,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:47:57,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99177543] [2020-10-16 01:47:57,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:47:57,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:47:57,244 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 01:47:57,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99177543] [2020-10-16 01:47:57,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:47:57,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:47:57,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924509592] [2020-10-16 01:47:57,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:47:57,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:47:57,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:47:57,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:47:57,247 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 139 [2020-10-16 01:47:57,248 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 22 transitions, 81 flow. Second operand 5 states. [2020-10-16 01:47:57,248 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:47:57,248 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 139 [2020-10-16 01:47:57,248 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:47:57,345 INFO L129 PetriNetUnfolder]: 136/271 cut-off events. [2020-10-16 01:47:57,345 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2020-10-16 01:47:57,347 INFO L80 FinitePrefix]: Finished finitePrefix Result has 691 conditions, 271 events. 136/271 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1144 event pairs, 34 based on Foata normal form. 9/258 useless extension candidates. Maximal degree in co-relation 678. Up to 124 conditions per place. [2020-10-16 01:47:57,350 INFO L132 encePairwiseOnDemand]: 133/139 looper letters, 24 selfloop transitions, 10 changer transitions 0/43 dead transitions. [2020-10-16 01:47:57,350 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 43 transitions, 209 flow [2020-10-16 01:47:57,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 01:47:57,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 01:47:57,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 605 transitions. [2020-10-16 01:47:57,353 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7254196642685852 [2020-10-16 01:47:57,353 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 605 transitions. [2020-10-16 01:47:57,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 605 transitions. [2020-10-16 01:47:57,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:47:57,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 605 transitions. [2020-10-16 01:47:57,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 01:47:57,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 01:47:57,358 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 01:47:57,358 INFO L185 Difference]: Start difference. First operand has 31 places, 22 transitions, 81 flow. Second operand 6 states and 605 transitions. [2020-10-16 01:47:57,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 43 transitions, 209 flow [2020-10-16 01:47:57,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 43 transitions, 203 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:47:57,361 INFO L241 Difference]: Finished difference. Result has 38 places, 28 transitions, 142 flow [2020-10-16 01:47:57,361 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=142, PETRI_PLACES=38, PETRI_TRANSITIONS=28} [2020-10-16 01:47:57,362 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2020-10-16 01:47:57,362 INFO L481 AbstractCegarLoop]: Abstraction has has 38 places, 28 transitions, 142 flow [2020-10-16 01:47:57,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:47:57,362 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:47:57,362 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:47:57,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 01:47:57,363 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 01:47:57,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:47:57,363 INFO L82 PathProgramCache]: Analyzing trace with hash 407975478, now seen corresponding path program 1 times [2020-10-16 01:47:57,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:47:57,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018280640] [2020-10-16 01:47:57,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:47:57,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:47:57,403 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 01:47:57,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018280640] [2020-10-16 01:47:57,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:47:57,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:47:57,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884427042] [2020-10-16 01:47:57,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:47:57,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:47:57,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:47:57,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:47:57,407 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 139 [2020-10-16 01:47:57,408 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 28 transitions, 142 flow. Second operand 5 states. [2020-10-16 01:47:57,408 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:47:57,408 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 139 [2020-10-16 01:47:57,409 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:47:57,551 INFO L129 PetriNetUnfolder]: 159/369 cut-off events. [2020-10-16 01:47:57,551 INFO L130 PetriNetUnfolder]: For 296/296 co-relation queries the response was YES. [2020-10-16 01:47:57,553 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1169 conditions, 369 events. 159/369 cut-off events. For 296/296 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 1968 event pairs, 46 based on Foata normal form. 13/352 useless extension candidates. Maximal degree in co-relation 1152. Up to 166 conditions per place. [2020-10-16 01:47:57,556 INFO L132 encePairwiseOnDemand]: 133/139 looper letters, 30 selfloop transitions, 15 changer transitions 0/54 dead transitions. [2020-10-16 01:47:57,556 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 54 transitions, 359 flow [2020-10-16 01:47:57,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 01:47:57,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 01:47:57,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 600 transitions. [2020-10-16 01:47:57,559 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7194244604316546 [2020-10-16 01:47:57,559 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 600 transitions. [2020-10-16 01:47:57,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 600 transitions. [2020-10-16 01:47:57,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:47:57,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 600 transitions. [2020-10-16 01:47:57,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 01:47:57,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 01:47:57,563 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 01:47:57,563 INFO L185 Difference]: Start difference. First operand has 38 places, 28 transitions, 142 flow. Second operand 6 states and 600 transitions. [2020-10-16 01:47:57,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 54 transitions, 359 flow [2020-10-16 01:47:57,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 54 transitions, 338 flow, removed 4 selfloop flow, removed 2 redundant places. [2020-10-16 01:47:57,567 INFO L241 Difference]: Finished difference. Result has 44 places, 37 transitions, 244 flow [2020-10-16 01:47:57,567 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=244, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2020-10-16 01:47:57,568 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2020-10-16 01:47:57,568 INFO L481 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 244 flow [2020-10-16 01:47:57,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:47:57,568 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:47:57,568 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:47:57,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 01:47:57,569 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 01:47:57,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:47:57,569 INFO L82 PathProgramCache]: Analyzing trace with hash -689102574, now seen corresponding path program 1 times [2020-10-16 01:47:57,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:47:57,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865958144] [2020-10-16 01:47:57,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:47:57,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:47:57,621 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 01:47:57,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865958144] [2020-10-16 01:47:57,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793537147] [2020-10-16 01:47:57,621 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 01:47:57,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:47:57,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 01:47:57,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 01:47:57,760 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 01:47:57,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 01:47:57,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 01:47:57,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807075329] [2020-10-16 01:47:57,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 01:47:57,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:47:57,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 01:47:57,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 01:47:57,763 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 139 [2020-10-16 01:47:57,764 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 244 flow. Second operand 9 states. [2020-10-16 01:47:57,764 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:47:57,764 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 139 [2020-10-16 01:47:57,764 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:47:58,031 INFO L129 PetriNetUnfolder]: 158/379 cut-off events. [2020-10-16 01:47:58,031 INFO L130 PetriNetUnfolder]: For 646/646 co-relation queries the response was YES. [2020-10-16 01:47:58,033 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1429 conditions, 379 events. 158/379 cut-off events. For 646/646 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2067 event pairs, 30 based on Foata normal form. 3/357 useless extension candidates. Maximal degree in co-relation 1409. Up to 146 conditions per place. [2020-10-16 01:47:58,037 INFO L132 encePairwiseOnDemand]: 132/139 looper letters, 39 selfloop transitions, 29 changer transitions 0/76 dead transitions. [2020-10-16 01:47:58,037 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 76 transitions, 558 flow [2020-10-16 01:47:58,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 01:47:58,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 01:47:58,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1262 transitions. [2020-10-16 01:47:58,042 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6983951300498064 [2020-10-16 01:47:58,042 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1262 transitions. [2020-10-16 01:47:58,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1262 transitions. [2020-10-16 01:47:58,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:47:58,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1262 transitions. [2020-10-16 01:47:58,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 01:47:58,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 01:47:58,050 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 01:47:58,050 INFO L185 Difference]: Start difference. First operand has 44 places, 37 transitions, 244 flow. Second operand 13 states and 1262 transitions. [2020-10-16 01:47:58,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 76 transitions, 558 flow [2020-10-16 01:47:58,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 76 transitions, 542 flow, removed 6 selfloop flow, removed 1 redundant places. [2020-10-16 01:47:58,058 INFO L241 Difference]: Finished difference. Result has 58 places, 47 transitions, 388 flow [2020-10-16 01:47:58,058 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=388, PETRI_PLACES=58, PETRI_TRANSITIONS=47} [2020-10-16 01:47:58,058 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 29 predicate places. [2020-10-16 01:47:58,058 INFO L481 AbstractCegarLoop]: Abstraction has has 58 places, 47 transitions, 388 flow [2020-10-16 01:47:58,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 01:47:58,059 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:47:58,059 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:47:58,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-16 01:47:58,273 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 01:47:58,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:47:58,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1222415634, now seen corresponding path program 2 times [2020-10-16 01:47:58,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:47:58,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049661532] [2020-10-16 01:47:58,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:47:58,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:47:58,320 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 01:47:58,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049661532] [2020-10-16 01:47:58,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:47:58,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 01:47:58,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579402267] [2020-10-16 01:47:58,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 01:47:58,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:47:58,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 01:47:58,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 01:47:58,323 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 139 [2020-10-16 01:47:58,324 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 47 transitions, 388 flow. Second operand 7 states. [2020-10-16 01:47:58,324 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:47:58,324 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 139 [2020-10-16 01:47:58,324 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:47:58,586 INFO L129 PetriNetUnfolder]: 156/387 cut-off events. [2020-10-16 01:47:58,586 INFO L130 PetriNetUnfolder]: For 1045/1045 co-relation queries the response was YES. [2020-10-16 01:47:58,588 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1661 conditions, 387 events. 156/387 cut-off events. For 1045/1045 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2175 event pairs, 33 based on Foata normal form. 3/367 useless extension candidates. Maximal degree in co-relation 1637. Up to 126 conditions per place. [2020-10-16 01:47:58,593 INFO L132 encePairwiseOnDemand]: 132/139 looper letters, 40 selfloop transitions, 32 changer transitions 0/80 dead transitions. [2020-10-16 01:47:58,593 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 80 transitions, 681 flow [2020-10-16 01:47:58,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 01:47:58,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 01:47:58,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1262 transitions. [2020-10-16 01:47:58,598 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6983951300498064 [2020-10-16 01:47:58,598 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1262 transitions. [2020-10-16 01:47:58,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1262 transitions. [2020-10-16 01:47:58,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:47:58,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1262 transitions. [2020-10-16 01:47:58,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 01:47:58,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 01:47:58,606 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 01:47:58,607 INFO L185 Difference]: Start difference. First operand has 58 places, 47 transitions, 388 flow. Second operand 13 states and 1262 transitions. [2020-10-16 01:47:58,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 80 transitions, 681 flow [2020-10-16 01:47:58,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 80 transitions, 618 flow, removed 6 selfloop flow, removed 7 redundant places. [2020-10-16 01:47:58,619 INFO L241 Difference]: Finished difference. Result has 66 places, 52 transitions, 455 flow [2020-10-16 01:47:58,620 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=455, PETRI_PLACES=66, PETRI_TRANSITIONS=52} [2020-10-16 01:47:58,620 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 37 predicate places. [2020-10-16 01:47:58,620 INFO L481 AbstractCegarLoop]: Abstraction has has 66 places, 52 transitions, 455 flow [2020-10-16 01:47:58,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 01:47:58,620 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:47:58,621 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:47:58,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-16 01:47:58,621 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 01:47:58,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:47:58,621 INFO L82 PathProgramCache]: Analyzing trace with hash 38946908, now seen corresponding path program 1 times [2020-10-16 01:47:58,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:47:58,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211885786] [2020-10-16 01:47:58,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:47:58,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:47:58,702 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 01:47:58,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211885786] [2020-10-16 01:47:58,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:47:58,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:47:58,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851000333] [2020-10-16 01:47:58,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:47:58,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:47:58,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:47:58,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:47:58,706 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 139 [2020-10-16 01:47:58,706 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 52 transitions, 455 flow. Second operand 5 states. [2020-10-16 01:47:58,706 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:47:58,706 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 139 [2020-10-16 01:47:58,706 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:47:58,852 INFO L129 PetriNetUnfolder]: 193/509 cut-off events. [2020-10-16 01:47:58,853 INFO L130 PetriNetUnfolder]: For 1975/2003 co-relation queries the response was YES. [2020-10-16 01:47:58,856 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2234 conditions, 509 events. 193/509 cut-off events. For 1975/2003 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3298 event pairs, 44 based on Foata normal form. 25/507 useless extension candidates. Maximal degree in co-relation 2208. Up to 197 conditions per place. [2020-10-16 01:47:58,862 INFO L132 encePairwiseOnDemand]: 133/139 looper letters, 56 selfloop transitions, 30 changer transitions 0/95 dead transitions. [2020-10-16 01:47:58,862 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 95 transitions, 1023 flow [2020-10-16 01:47:58,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 01:47:58,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 01:47:58,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 606 transitions. [2020-10-16 01:47:58,865 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7266187050359713 [2020-10-16 01:47:58,865 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 606 transitions. [2020-10-16 01:47:58,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 606 transitions. [2020-10-16 01:47:58,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:47:58,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 606 transitions. [2020-10-16 01:47:58,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 01:47:58,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 01:47:58,870 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 01:47:58,870 INFO L185 Difference]: Start difference. First operand has 66 places, 52 transitions, 455 flow. Second operand 6 states and 606 transitions. [2020-10-16 01:47:58,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 95 transitions, 1023 flow [2020-10-16 01:47:58,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 95 transitions, 910 flow, removed 10 selfloop flow, removed 9 redundant places. [2020-10-16 01:47:58,888 INFO L241 Difference]: Finished difference. Result has 65 places, 73 transitions, 739 flow [2020-10-16 01:47:58,888 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=739, PETRI_PLACES=65, PETRI_TRANSITIONS=73} [2020-10-16 01:47:58,889 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 36 predicate places. [2020-10-16 01:47:58,889 INFO L481 AbstractCegarLoop]: Abstraction has has 65 places, 73 transitions, 739 flow [2020-10-16 01:47:58,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:47:58,889 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:47:58,889 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:47:58,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-16 01:47:58,889 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 01:47:58,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:47:58,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1203907673, now seen corresponding path program 1 times [2020-10-16 01:47:58,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:47:58,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123069452] [2020-10-16 01:47:58,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:47:58,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 01:47:58,916 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 01:47:58,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 01:47:58,932 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 01:47:58,946 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 01:47:58,946 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 01:47:58,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-16 01:47:58,947 WARN L371 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 01:47:58,948 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-10-16 01:47:58,962 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,962 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,962 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,963 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,982 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,983 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,983 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,983 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,983 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,984 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,984 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,984 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,984 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,984 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,984 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,985 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,985 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,985 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,985 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,985 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,985 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,986 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,986 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,986 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,986 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,986 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,986 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,987 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,987 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,987 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,987 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,987 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,987 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,988 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,988 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,988 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,988 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,988 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,988 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,988 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,989 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,989 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,989 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,989 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,989 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,989 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,989 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,990 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,990 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,990 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,990 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,990 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,990 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,991 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,991 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,991 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,991 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,991 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,991 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,992 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,992 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,992 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,992 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,992 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,992 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,993 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,993 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,993 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,993 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,993 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,993 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,993 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,994 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,994 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,994 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,994 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,994 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,995 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,995 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,995 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,995 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,995 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,995 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,995 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,996 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,996 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,996 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,997 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:58,997 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,001 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,002 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,002 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,002 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,002 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,003 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,004 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,004 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,004 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,004 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,006 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,006 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,006 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,006 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,006 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,008 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,008 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,008 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,008 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,008 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,009 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,010 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,010 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,010 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,010 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,011 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,011 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,012 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,012 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,012 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,013 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,013 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,013 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,015 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,015 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,015 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,016 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,016 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,016 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:59,018 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-16 01:47:59,019 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:47:59,019 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:47:59,019 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:47:59,019 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:47:59,019 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:47:59,019 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:47:59,019 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:47:59,019 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:47:59,022 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 105 transitions, 274 flow [2020-10-16 01:47:59,036 INFO L129 PetriNetUnfolder]: 6/127 cut-off events. [2020-10-16 01:47:59,036 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-16 01:47:59,037 INFO L80 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 127 events. 6/127 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 212 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 147. Up to 10 conditions per place. [2020-10-16 01:47:59,037 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 105 transitions, 274 flow [2020-10-16 01:47:59,038 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 71 transitions, 177 flow [2020-10-16 01:47:59,038 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:47:59,038 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 71 transitions, 177 flow [2020-10-16 01:47:59,039 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 71 transitions, 177 flow [2020-10-16 01:47:59,039 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 81 places, 71 transitions, 177 flow [2020-10-16 01:47:59,055 INFO L129 PetriNetUnfolder]: 6/127 cut-off events. [2020-10-16 01:47:59,056 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-16 01:47:59,057 INFO L80 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 127 events. 6/127 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 225 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 130. Up to 10 conditions per place. [2020-10-16 01:47:59,061 INFO L117 LiptonReduction]: Number of co-enabled transitions 2192 [2020-10-16 01:47:59,979 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-16 01:48:00,054 INFO L132 LiptonReduction]: Checked pairs total: 2992 [2020-10-16 01:48:00,055 INFO L134 LiptonReduction]: Total number of compositions: 55 [2020-10-16 01:48:00,055 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1017 [2020-10-16 01:48:00,057 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2020-10-16 01:48:00,057 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:48:00,058 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:48:00,058 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2020-10-16 01:48:00,058 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 01:48:00,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:48:00,058 INFO L82 PathProgramCache]: Analyzing trace with hash 673501, now seen corresponding path program 1 times [2020-10-16 01:48:00,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:48:00,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832411740] [2020-10-16 01:48:00,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:48:00,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:00,077 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 01:48:00,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832411740] [2020-10-16 01:48:00,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:48:00,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:48:00,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824370114] [2020-10-16 01:48:00,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:48:00,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:48:00,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:48:00,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:48:00,080 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 160 [2020-10-16 01:48:00,080 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 22 transitions, 79 flow. Second operand 3 states. [2020-10-16 01:48:00,080 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:48:00,080 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 160 [2020-10-16 01:48:00,080 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:48:00,173 INFO L129 PetriNetUnfolder]: 504/756 cut-off events. [2020-10-16 01:48:00,173 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-16 01:48:00,175 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1514 conditions, 756 events. 504/756 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3091 event pairs, 233 based on Foata normal form. 0/624 useless extension candidates. Maximal degree in co-relation 1502. Up to 651 conditions per place. [2020-10-16 01:48:00,185 INFO L132 encePairwiseOnDemand]: 154/160 looper letters, 15 selfloop transitions, 5 changer transitions 0/31 dead transitions. [2020-10-16 01:48:00,186 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 31 transitions, 137 flow [2020-10-16 01:48:00,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:48:00,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:48:00,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 354 transitions. [2020-10-16 01:48:00,188 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7375 [2020-10-16 01:48:00,188 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 354 transitions. [2020-10-16 01:48:00,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 354 transitions. [2020-10-16 01:48:00,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:48:00,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 354 transitions. [2020-10-16 01:48:00,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:48:00,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:48:00,190 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:48:00,190 INFO L185 Difference]: Start difference. First operand has 34 places, 22 transitions, 79 flow. Second operand 3 states and 354 transitions. [2020-10-16 01:48:00,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 31 transitions, 137 flow [2020-10-16 01:48:00,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 31 transitions, 124 flow, removed 6 selfloop flow, removed 1 redundant places. [2020-10-16 01:48:00,192 INFO L241 Difference]: Finished difference. Result has 36 places, 26 transitions, 99 flow [2020-10-16 01:48:00,192 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, 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 01:48:00,192 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2020-10-16 01:48:00,193 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 99 flow [2020-10-16 01:48:00,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:48:00,193 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:48:00,193 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:48:00,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-16 01:48:00,193 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 01:48:00,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:48:00,194 INFO L82 PathProgramCache]: Analyzing trace with hash 979170514, now seen corresponding path program 1 times [2020-10-16 01:48:00,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:48:00,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955737179] [2020-10-16 01:48:00,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:48:00,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:00,221 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 01:48:00,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955737179] [2020-10-16 01:48:00,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:48:00,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:48:00,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90652305] [2020-10-16 01:48:00,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:48:00,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:48:00,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:48:00,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:48:00,224 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 160 [2020-10-16 01:48:00,225 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 99 flow. Second operand 5 states. [2020-10-16 01:48:00,225 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:48:00,225 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 160 [2020-10-16 01:48:00,225 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:48:00,453 INFO L129 PetriNetUnfolder]: 732/1148 cut-off events. [2020-10-16 01:48:00,453 INFO L130 PetriNetUnfolder]: For 90/90 co-relation queries the response was YES. [2020-10-16 01:48:00,457 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2928 conditions, 1148 events. 732/1148 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5685 event pairs, 134 based on Foata normal form. 27/1106 useless extension candidates. Maximal degree in co-relation 2914. Up to 568 conditions per place. [2020-10-16 01:48:00,467 INFO L132 encePairwiseOnDemand]: 153/160 looper letters, 31 selfloop transitions, 13 changer transitions 0/54 dead transitions. [2020-10-16 01:48:00,467 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 54 transitions, 268 flow [2020-10-16 01:48:00,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 01:48:00,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 01:48:00,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 693 transitions. [2020-10-16 01:48:00,470 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.721875 [2020-10-16 01:48:00,470 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 693 transitions. [2020-10-16 01:48:00,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 693 transitions. [2020-10-16 01:48:00,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:48:00,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 693 transitions. [2020-10-16 01:48:00,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 01:48:00,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 01:48:00,474 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 01:48:00,474 INFO L185 Difference]: Start difference. First operand has 36 places, 26 transitions, 99 flow. Second operand 6 states and 693 transitions. [2020-10-16 01:48:00,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 54 transitions, 268 flow [2020-10-16 01:48:00,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 54 transitions, 260 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:48:00,477 INFO L241 Difference]: Finished difference. Result has 43 places, 34 transitions, 179 flow [2020-10-16 01:48:00,478 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=179, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2020-10-16 01:48:00,478 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 9 predicate places. [2020-10-16 01:48:00,478 INFO L481 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 179 flow [2020-10-16 01:48:00,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:48:00,478 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:48:00,478 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:48:00,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-16 01:48:00,479 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 01:48:00,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:48:00,479 INFO L82 PathProgramCache]: Analyzing trace with hash 963155286, now seen corresponding path program 1 times [2020-10-16 01:48:00,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:48:00,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772428135] [2020-10-16 01:48:00,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:48:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:00,512 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 01:48:00,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772428135] [2020-10-16 01:48:00,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:48:00,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:48:00,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867547140] [2020-10-16 01:48:00,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:48:00,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:48:00,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:48:00,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:48:00,515 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 160 [2020-10-16 01:48:00,516 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 179 flow. Second operand 5 states. [2020-10-16 01:48:00,516 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:48:00,516 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 160 [2020-10-16 01:48:00,516 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:48:00,778 INFO L129 PetriNetUnfolder]: 1039/1744 cut-off events. [2020-10-16 01:48:00,778 INFO L130 PetriNetUnfolder]: For 1188/1188 co-relation queries the response was YES. [2020-10-16 01:48:00,787 INFO L80 FinitePrefix]: Finished finitePrefix Result has 5632 conditions, 1744 events. 1039/1744 cut-off events. For 1188/1188 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 10196 event pairs, 319 based on Foata normal form. 41/1697 useless extension candidates. Maximal degree in co-relation 5614. Up to 890 conditions per place. [2020-10-16 01:48:00,804 INFO L132 encePairwiseOnDemand]: 153/160 looper letters, 39 selfloop transitions, 20 changer transitions 0/69 dead transitions. [2020-10-16 01:48:00,804 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 69 transitions, 466 flow [2020-10-16 01:48:00,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 01:48:00,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 01:48:00,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 694 transitions. [2020-10-16 01:48:00,807 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7229166666666667 [2020-10-16 01:48:00,807 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 694 transitions. [2020-10-16 01:48:00,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 694 transitions. [2020-10-16 01:48:00,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:48:00,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 694 transitions. [2020-10-16 01:48:00,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 01:48:00,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 01:48:00,811 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 01:48:00,811 INFO L185 Difference]: Start difference. First operand has 43 places, 34 transitions, 179 flow. Second operand 6 states and 694 transitions. [2020-10-16 01:48:00,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 69 transitions, 466 flow [2020-10-16 01:48:00,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 69 transitions, 435 flow, removed 6 selfloop flow, removed 2 redundant places. [2020-10-16 01:48:00,818 INFO L241 Difference]: Finished difference. Result has 49 places, 46 transitions, 311 flow [2020-10-16 01:48:00,819 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=311, PETRI_PLACES=49, PETRI_TRANSITIONS=46} [2020-10-16 01:48:00,820 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 15 predicate places. [2020-10-16 01:48:00,820 INFO L481 AbstractCegarLoop]: Abstraction has has 49 places, 46 transitions, 311 flow [2020-10-16 01:48:00,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:48:00,820 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:48:00,820 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:48:00,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-16 01:48:00,820 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 01:48:00,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:48:00,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1828752198, now seen corresponding path program 1 times [2020-10-16 01:48:00,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:48:00,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280942813] [2020-10-16 01:48:00,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:48:00,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:00,874 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 01:48:00,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280942813] [2020-10-16 01:48:00,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154128605] [2020-10-16 01:48:00,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 01:48:00,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:00,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 01:48:00,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 01:48:00,962 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 01:48:00,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 01:48:00,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-16 01:48:00,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833258527] [2020-10-16 01:48:00,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 01:48:00,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:48:00,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 01:48:00,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 01:48:00,965 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 160 [2020-10-16 01:48:00,966 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 311 flow. Second operand 7 states. [2020-10-16 01:48:00,966 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:48:00,966 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 160 [2020-10-16 01:48:00,966 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:48:01,422 INFO L129 PetriNetUnfolder]: 1080/1842 cut-off events. [2020-10-16 01:48:01,422 INFO L130 PetriNetUnfolder]: For 3046/3046 co-relation queries the response was YES. [2020-10-16 01:48:01,430 INFO L80 FinitePrefix]: Finished finitePrefix Result has 7053 conditions, 1842 events. 1080/1842 cut-off events. For 3046/3046 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 11055 event pairs, 235 based on Foata normal form. 9/1775 useless extension candidates. Maximal degree in co-relation 7032. Up to 817 conditions per place. [2020-10-16 01:48:01,451 INFO L132 encePairwiseOnDemand]: 152/160 looper letters, 61 selfloop transitions, 38 changer transitions 0/108 dead transitions. [2020-10-16 01:48:01,451 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 108 transitions, 787 flow [2020-10-16 01:48:01,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 01:48:01,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 01:48:01,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1461 transitions. [2020-10-16 01:48:01,456 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7024038461538461 [2020-10-16 01:48:01,456 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1461 transitions. [2020-10-16 01:48:01,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1461 transitions. [2020-10-16 01:48:01,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:48:01,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1461 transitions. [2020-10-16 01:48:01,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 01:48:01,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 01:48:01,465 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 01:48:01,465 INFO L185 Difference]: Start difference. First operand has 49 places, 46 transitions, 311 flow. Second operand 13 states and 1461 transitions. [2020-10-16 01:48:01,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 108 transitions, 787 flow [2020-10-16 01:48:01,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 108 transitions, 761 flow, removed 10 selfloop flow, removed 1 redundant places. [2020-10-16 01:48:01,479 INFO L241 Difference]: Finished difference. Result has 63 places, 59 transitions, 496 flow [2020-10-16 01:48:01,479 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=496, PETRI_PLACES=63, PETRI_TRANSITIONS=59} [2020-10-16 01:48:01,479 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 29 predicate places. [2020-10-16 01:48:01,479 INFO L481 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 496 flow [2020-10-16 01:48:01,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 01:48:01,480 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:48:01,480 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:48:01,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-16 01:48:01,694 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 01:48:01,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:48:01,695 INFO L82 PathProgramCache]: Analyzing trace with hash -2120698438, now seen corresponding path program 2 times [2020-10-16 01:48:01,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:48:01,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154214116] [2020-10-16 01:48:01,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:48:01,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:01,737 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 01:48:01,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154214116] [2020-10-16 01:48:01,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:48:01,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 01:48:01,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332314442] [2020-10-16 01:48:01,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 01:48:01,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:48:01,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 01:48:01,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 01:48:01,741 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 160 [2020-10-16 01:48:01,741 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 496 flow. Second operand 7 states. [2020-10-16 01:48:01,741 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:48:01,741 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 160 [2020-10-16 01:48:01,742 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:48:02,161 INFO L129 PetriNetUnfolder]: 1120/1938 cut-off events. [2020-10-16 01:48:02,162 INFO L130 PetriNetUnfolder]: For 5488/5488 co-relation queries the response was YES. [2020-10-16 01:48:02,174 INFO L80 FinitePrefix]: Finished finitePrefix Result has 8462 conditions, 1938 events. 1120/1938 cut-off events. For 5488/5488 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 12001 event pairs, 242 based on Foata normal form. 9/1877 useless extension candidates. Maximal degree in co-relation 8437. Up to 744 conditions per place. [2020-10-16 01:48:02,209 INFO L132 encePairwiseOnDemand]: 152/160 looper letters, 64 selfloop transitions, 43 changer transitions 0/116 dead transitions. [2020-10-16 01:48:02,209 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 116 transitions, 984 flow [2020-10-16 01:48:02,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 01:48:02,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 01:48:02,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1461 transitions. [2020-10-16 01:48:02,218 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7024038461538461 [2020-10-16 01:48:02,218 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1461 transitions. [2020-10-16 01:48:02,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1461 transitions. [2020-10-16 01:48:02,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:48:02,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1461 transitions. [2020-10-16 01:48:02,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 01:48:02,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 01:48:02,232 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 01:48:02,232 INFO L185 Difference]: Start difference. First operand has 63 places, 59 transitions, 496 flow. Second operand 13 states and 1461 transitions. [2020-10-16 01:48:02,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 116 transitions, 984 flow [2020-10-16 01:48:02,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 116 transitions, 900 flow, removed 8 selfloop flow, removed 7 redundant places. [2020-10-16 01:48:02,263 INFO L241 Difference]: Finished difference. Result has 71 places, 68 transitions, 613 flow [2020-10-16 01:48:02,264 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=613, PETRI_PLACES=71, PETRI_TRANSITIONS=68} [2020-10-16 01:48:02,264 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 37 predicate places. [2020-10-16 01:48:02,264 INFO L481 AbstractCegarLoop]: Abstraction has has 71 places, 68 transitions, 613 flow [2020-10-16 01:48:02,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 01:48:02,264 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:48:02,264 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:48:02,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-16 01:48:02,265 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 01:48:02,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:48:02,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1204137406, now seen corresponding path program 1 times [2020-10-16 01:48:02,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:48:02,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817699267] [2020-10-16 01:48:02,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:48:02,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:02,315 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 01:48:02,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817699267] [2020-10-16 01:48:02,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:48:02,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:48:02,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870913562] [2020-10-16 01:48:02,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:48:02,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:48:02,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:48:02,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:48:02,318 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 160 [2020-10-16 01:48:02,318 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 68 transitions, 613 flow. Second operand 5 states. [2020-10-16 01:48:02,318 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:48:02,319 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 160 [2020-10-16 01:48:02,319 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:48:02,794 INFO L129 PetriNetUnfolder]: 1531/2853 cut-off events. [2020-10-16 01:48:02,795 INFO L130 PetriNetUnfolder]: For 11084/11112 co-relation queries the response was YES. [2020-10-16 01:48:02,813 INFO L80 FinitePrefix]: Finished finitePrefix Result has 13859 conditions, 2853 events. 1531/2853 cut-off events. For 11084/11112 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 20892 event pairs, 465 based on Foata normal form. 74/2805 useless extension candidates. Maximal degree in co-relation 13832. Up to 1367 conditions per place. [2020-10-16 01:48:02,835 INFO L132 encePairwiseOnDemand]: 153/160 looper letters, 88 selfloop transitions, 40 changer transitions 0/138 dead transitions. [2020-10-16 01:48:02,836 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 138 transitions, 1538 flow [2020-10-16 01:48:02,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 01:48:02,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 01:48:02,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 700 transitions. [2020-10-16 01:48:02,840 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2020-10-16 01:48:02,840 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 700 transitions. [2020-10-16 01:48:02,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 700 transitions. [2020-10-16 01:48:02,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:48:02,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 700 transitions. [2020-10-16 01:48:02,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 01:48:02,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 01:48:02,843 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 01:48:02,844 INFO L185 Difference]: Start difference. First operand has 71 places, 68 transitions, 613 flow. Second operand 6 states and 700 transitions. [2020-10-16 01:48:02,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 138 transitions, 1538 flow [2020-10-16 01:48:02,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 138 transitions, 1365 flow, removed 16 selfloop flow, removed 9 redundant places. [2020-10-16 01:48:02,912 INFO L241 Difference]: Finished difference. Result has 70 places, 95 transitions, 962 flow [2020-10-16 01:48:02,912 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=962, PETRI_PLACES=70, PETRI_TRANSITIONS=95} [2020-10-16 01:48:02,912 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 36 predicate places. [2020-10-16 01:48:02,913 INFO L481 AbstractCegarLoop]: Abstraction has has 70 places, 95 transitions, 962 flow [2020-10-16 01:48:02,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:48:02,913 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:48:02,913 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:48:02,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-16 01:48:02,913 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 01:48:02,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:48:02,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1563762778, now seen corresponding path program 1 times [2020-10-16 01:48:02,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:48:02,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537791482] [2020-10-16 01:48:02,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:48:02,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:02,967 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 01:48:02,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537791482] [2020-10-16 01:48:02,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950278481] [2020-10-16 01:48:02,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 01:48:03,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:03,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 01:48:03,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 01:48:03,053 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 01:48:03,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 01:48:03,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-16 01:48:03,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562185576] [2020-10-16 01:48:03,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 01:48:03,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:48:03,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 01:48:03,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 01:48:03,056 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 160 [2020-10-16 01:48:03,057 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 95 transitions, 962 flow. Second operand 7 states. [2020-10-16 01:48:03,057 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:48:03,057 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 160 [2020-10-16 01:48:03,057 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:48:03,764 INFO L129 PetriNetUnfolder]: 1583/2947 cut-off events. [2020-10-16 01:48:03,765 INFO L130 PetriNetUnfolder]: For 14398/14432 co-relation queries the response was YES. [2020-10-16 01:48:03,782 INFO L80 FinitePrefix]: Finished finitePrefix Result has 15599 conditions, 2947 events. 1583/2947 cut-off events. For 14398/14432 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 21901 event pairs, 348 based on Foata normal form. 28/2904 useless extension candidates. Maximal degree in co-relation 15569. Up to 1118 conditions per place. [2020-10-16 01:48:03,804 INFO L132 encePairwiseOnDemand]: 152/160 looper letters, 92 selfloop transitions, 80 changer transitions 0/181 dead transitions. [2020-10-16 01:48:03,804 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 181 transitions, 1998 flow [2020-10-16 01:48:03,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 01:48:03,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 01:48:03,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1476 transitions. [2020-10-16 01:48:03,808 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7096153846153846 [2020-10-16 01:48:03,808 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1476 transitions. [2020-10-16 01:48:03,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1476 transitions. [2020-10-16 01:48:03,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:48:03,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1476 transitions. [2020-10-16 01:48:03,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 01:48:03,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 01:48:03,815 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 01:48:03,815 INFO L185 Difference]: Start difference. First operand has 70 places, 95 transitions, 962 flow. Second operand 13 states and 1476 transitions. [2020-10-16 01:48:03,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 181 transitions, 1998 flow [2020-10-16 01:48:03,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 181 transitions, 1933 flow, removed 28 selfloop flow, removed 1 redundant places. [2020-10-16 01:48:03,927 INFO L241 Difference]: Finished difference. Result has 84 places, 121 transitions, 1430 flow [2020-10-16 01:48:03,927 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=911, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1430, PETRI_PLACES=84, PETRI_TRANSITIONS=121} [2020-10-16 01:48:03,927 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 50 predicate places. [2020-10-16 01:48:03,927 INFO L481 AbstractCegarLoop]: Abstraction has has 84 places, 121 transitions, 1430 flow [2020-10-16 01:48:03,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 01:48:03,928 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:48:03,928 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:48:04,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 01:48:04,143 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 01:48:04,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:48:04,144 INFO L82 PathProgramCache]: Analyzing trace with hash 160040113, now seen corresponding path program 1 times [2020-10-16 01:48:04,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:48:04,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232625257] [2020-10-16 01:48:04,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:48:04,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:04,186 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 01:48:04,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232625257] [2020-10-16 01:48:04,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082505960] [2020-10-16 01:48:04,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 01:48:04,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:04,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 01:48:04,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 01:48:04,266 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 01:48:04,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 01:48:04,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-16 01:48:04,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905344637] [2020-10-16 01:48:04,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 01:48:04,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:48:04,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 01:48:04,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 01:48:04,269 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 160 [2020-10-16 01:48:04,270 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 121 transitions, 1430 flow. Second operand 7 states. [2020-10-16 01:48:04,270 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:48:04,270 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 160 [2020-10-16 01:48:04,270 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:48:04,861 INFO L129 PetriNetUnfolder]: 1624/3077 cut-off events. [2020-10-16 01:48:04,861 INFO L130 PetriNetUnfolder]: For 20152/20152 co-relation queries the response was YES. [2020-10-16 01:48:04,876 INFO L80 FinitePrefix]: Finished finitePrefix Result has 17732 conditions, 3077 events. 1624/3077 cut-off events. For 20152/20152 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 23280 event pairs, 329 based on Foata normal form. 19/3021 useless extension candidates. Maximal degree in co-relation 17698. Up to 985 conditions per place. [2020-10-16 01:48:04,902 INFO L132 encePairwiseOnDemand]: 152/160 looper letters, 112 selfloop transitions, 91 changer transitions 0/212 dead transitions. [2020-10-16 01:48:04,902 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 212 transitions, 2659 flow [2020-10-16 01:48:04,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 01:48:04,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 01:48:04,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1477 transitions. [2020-10-16 01:48:04,905 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7100961538461539 [2020-10-16 01:48:04,905 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1477 transitions. [2020-10-16 01:48:04,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1477 transitions. [2020-10-16 01:48:04,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:48:04,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1477 transitions. [2020-10-16 01:48:04,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 01:48:04,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 01:48:04,914 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 01:48:04,914 INFO L185 Difference]: Start difference. First operand has 84 places, 121 transitions, 1430 flow. Second operand 13 states and 1477 transitions. [2020-10-16 01:48:04,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 212 transitions, 2659 flow [2020-10-16 01:48:05,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 212 transitions, 2574 flow, removed 26 selfloop flow, removed 3 redundant places. [2020-10-16 01:48:05,120 INFO L241 Difference]: Finished difference. Result has 96 places, 150 transitions, 1973 flow [2020-10-16 01:48:05,120 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=1365, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1973, PETRI_PLACES=96, PETRI_TRANSITIONS=150} [2020-10-16 01:48:05,121 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 62 predicate places. [2020-10-16 01:48:05,121 INFO L481 AbstractCegarLoop]: Abstraction has has 96 places, 150 transitions, 1973 flow [2020-10-16 01:48:05,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 01:48:05,121 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:48:05,121 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:48:05,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 01:48:05,335 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 01:48:05,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:48:05,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1829836890, now seen corresponding path program 2 times [2020-10-16 01:48:05,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:48:05,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906544655] [2020-10-16 01:48:05,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:48:05,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:05,379 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 01:48:05,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906544655] [2020-10-16 01:48:05,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:48:05,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 01:48:05,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251872952] [2020-10-16 01:48:05,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 01:48:05,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:48:05,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 01:48:05,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 01:48:05,382 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 160 [2020-10-16 01:48:05,383 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 150 transitions, 1973 flow. Second operand 7 states. [2020-10-16 01:48:05,383 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:48:05,384 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 160 [2020-10-16 01:48:05,384 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:48:05,957 INFO L129 PetriNetUnfolder]: 1655/3150 cut-off events. [2020-10-16 01:48:05,957 INFO L130 PetriNetUnfolder]: For 26283/26317 co-relation queries the response was YES. [2020-10-16 01:48:05,976 INFO L80 FinitePrefix]: Finished finitePrefix Result has 19911 conditions, 3150 events. 1655/3150 cut-off events. For 26283/26317 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 24287 event pairs, 311 based on Foata normal form. 24/3122 useless extension candidates. Maximal degree in co-relation 19874. Up to 996 conditions per place. [2020-10-16 01:48:05,998 INFO L132 encePairwiseOnDemand]: 152/160 looper letters, 119 selfloop transitions, 100 changer transitions 0/228 dead transitions. [2020-10-16 01:48:05,998 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 228 transitions, 3123 flow [2020-10-16 01:48:05,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 01:48:05,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 01:48:06,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1476 transitions. [2020-10-16 01:48:06,001 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7096153846153846 [2020-10-16 01:48:06,002 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1476 transitions. [2020-10-16 01:48:06,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1476 transitions. [2020-10-16 01:48:06,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:48:06,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1476 transitions. [2020-10-16 01:48:06,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 01:48:06,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 01:48:06,007 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 01:48:06,007 INFO L185 Difference]: Start difference. First operand has 96 places, 150 transitions, 1973 flow. Second operand 13 states and 1476 transitions. [2020-10-16 01:48:06,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 228 transitions, 3123 flow [2020-10-16 01:48:06,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 228 transitions, 3059 flow, removed 30 selfloop flow, removed 1 redundant places. [2020-10-16 01:48:06,265 INFO L241 Difference]: Finished difference. Result has 110 places, 167 transitions, 2420 flow [2020-10-16 01:48:06,265 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=1927, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2420, PETRI_PLACES=110, PETRI_TRANSITIONS=167} [2020-10-16 01:48:06,266 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 76 predicate places. [2020-10-16 01:48:06,266 INFO L481 AbstractCegarLoop]: Abstraction has has 110 places, 167 transitions, 2420 flow [2020-10-16 01:48:06,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 01:48:06,266 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:48:06,266 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:48:06,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-16 01:48:06,266 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 01:48:06,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:48:06,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1829828303, now seen corresponding path program 2 times [2020-10-16 01:48:06,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:48:06,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884011740] [2020-10-16 01:48:06,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:48:06,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:06,302 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 01:48:06,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884011740] [2020-10-16 01:48:06,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:48:06,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 01:48:06,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457693515] [2020-10-16 01:48:06,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 01:48:06,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:48:06,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 01:48:06,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 01:48:06,305 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 160 [2020-10-16 01:48:06,306 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 167 transitions, 2420 flow. Second operand 7 states. [2020-10-16 01:48:06,306 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:48:06,306 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 160 [2020-10-16 01:48:06,306 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:48:07,145 INFO L129 PetriNetUnfolder]: 1696/3350 cut-off events. [2020-10-16 01:48:07,145 INFO L130 PetriNetUnfolder]: For 35247/35247 co-relation queries the response was YES. [2020-10-16 01:48:07,172 INFO L80 FinitePrefix]: Finished finitePrefix Result has 22414 conditions, 3350 events. 1696/3350 cut-off events. For 35247/35247 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 26423 event pairs, 367 based on Foata normal form. 19/3255 useless extension candidates. Maximal degree in co-relation 22373. Up to 1018 conditions per place. [2020-10-16 01:48:07,194 INFO L132 encePairwiseOnDemand]: 152/160 looper letters, 125 selfloop transitions, 113 changer transitions 0/247 dead transitions. [2020-10-16 01:48:07,195 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 247 transitions, 3717 flow [2020-10-16 01:48:07,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 01:48:07,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 01:48:07,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1477 transitions. [2020-10-16 01:48:07,197 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7100961538461539 [2020-10-16 01:48:07,197 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1477 transitions. [2020-10-16 01:48:07,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1477 transitions. [2020-10-16 01:48:07,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:48:07,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1477 transitions. [2020-10-16 01:48:07,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 01:48:07,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 01:48:07,202 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 01:48:07,202 INFO L185 Difference]: Start difference. First operand has 110 places, 167 transitions, 2420 flow. Second operand 13 states and 1477 transitions. [2020-10-16 01:48:07,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 247 transitions, 3717 flow [2020-10-16 01:48:07,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 247 transitions, 3470 flow, removed 29 selfloop flow, removed 9 redundant places. [2020-10-16 01:48:07,510 INFO L241 Difference]: Finished difference. Result has 116 places, 189 transitions, 2838 flow [2020-10-16 01:48:07,510 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=2221, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2838, PETRI_PLACES=116, PETRI_TRANSITIONS=189} [2020-10-16 01:48:07,511 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 82 predicate places. [2020-10-16 01:48:07,511 INFO L481 AbstractCegarLoop]: Abstraction has has 116 places, 189 transitions, 2838 flow [2020-10-16 01:48:07,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 01:48:07,511 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:48:07,511 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:48:07,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-16 01:48:07,511 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 01:48:07,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:48:07,512 INFO L82 PathProgramCache]: Analyzing trace with hash -916888880, now seen corresponding path program 1 times [2020-10-16 01:48:07,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:48:07,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749753620] [2020-10-16 01:48:07,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:48:07,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:07,548 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 01:48:07,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749753620] [2020-10-16 01:48:07,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:48:07,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:48:07,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632416479] [2020-10-16 01:48:07,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:48:07,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:48:07,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:48:07,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:48:07,552 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 160 [2020-10-16 01:48:07,552 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 189 transitions, 2838 flow. Second operand 5 states. [2020-10-16 01:48:07,552 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:48:07,552 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 160 [2020-10-16 01:48:07,553 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:48:08,321 INFO L129 PetriNetUnfolder]: 2404/4979 cut-off events. [2020-10-16 01:48:08,321 INFO L130 PetriNetUnfolder]: For 65735/66137 co-relation queries the response was YES. [2020-10-16 01:48:08,345 INFO L80 FinitePrefix]: Finished finitePrefix Result has 33364 conditions, 4979 events. 2404/4979 cut-off events. For 65735/66137 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 44377 event pairs, 601 based on Foata normal form. 151/5042 useless extension candidates. Maximal degree in co-relation 33320. Up to 2607 conditions per place. [2020-10-16 01:48:08,366 INFO L132 encePairwiseOnDemand]: 153/160 looper letters, 269 selfloop transitions, 89 changer transitions 0/368 dead transitions. [2020-10-16 01:48:08,367 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 368 transitions, 6406 flow [2020-10-16 01:48:08,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 01:48:08,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 01:48:08,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 700 transitions. [2020-10-16 01:48:08,368 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2020-10-16 01:48:08,369 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 700 transitions. [2020-10-16 01:48:08,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 700 transitions. [2020-10-16 01:48:08,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:48:08,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 700 transitions. [2020-10-16 01:48:08,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 01:48:08,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 01:48:08,371 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 01:48:08,371 INFO L185 Difference]: Start difference. First operand has 116 places, 189 transitions, 2838 flow. Second operand 6 states and 700 transitions. [2020-10-16 01:48:08,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 368 transitions, 6406 flow [2020-10-16 01:48:08,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 368 transitions, 6168 flow, removed 45 selfloop flow, removed 6 redundant places. [2020-10-16 01:48:09,004 INFO L241 Difference]: Finished difference. Result has 118 places, 257 transitions, 4245 flow [2020-10-16 01:48:09,004 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=2708, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4245, PETRI_PLACES=118, PETRI_TRANSITIONS=257} [2020-10-16 01:48:09,005 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 84 predicate places. [2020-10-16 01:48:09,005 INFO L481 AbstractCegarLoop]: Abstraction has has 118 places, 257 transitions, 4245 flow [2020-10-16 01:48:09,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:48:09,005 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:48:09,005 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:48:09,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-16 01:48:09,005 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 01:48:09,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:48:09,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1221556651, now seen corresponding path program 1 times [2020-10-16 01:48:09,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:48:09,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438092681] [2020-10-16 01:48:09,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:48:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:09,062 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 01:48:09,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438092681] [2020-10-16 01:48:09,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:48:09,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 01:48:09,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907346137] [2020-10-16 01:48:09,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 01:48:09,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:48:09,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 01:48:09,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 01:48:09,065 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 160 [2020-10-16 01:48:09,066 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 257 transitions, 4245 flow. Second operand 9 states. [2020-10-16 01:48:09,066 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:48:09,066 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 160 [2020-10-16 01:48:09,066 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:48:10,282 INFO L129 PetriNetUnfolder]: 2085/4347 cut-off events. [2020-10-16 01:48:10,282 INFO L130 PetriNetUnfolder]: For 59700/60462 co-relation queries the response was YES. [2020-10-16 01:48:10,308 INFO L80 FinitePrefix]: Finished finitePrefix Result has 31859 conditions, 4347 events. 2085/4347 cut-off events. For 59700/60462 co-relation queries the response was YES. Maximal size of possible extension queue 619. Compared 38644 event pairs, 274 based on Foata normal form. 33/4305 useless extension candidates. Maximal degree in co-relation 31812. Up to 1248 conditions per place. [2020-10-16 01:48:10,329 INFO L132 encePairwiseOnDemand]: 151/160 looper letters, 154 selfloop transitions, 244 changer transitions 0/406 dead transitions. [2020-10-16 01:48:10,330 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 406 transitions, 6854 flow [2020-10-16 01:48:10,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 01:48:10,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 01:48:10,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3182 transitions. [2020-10-16 01:48:10,337 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6857758620689656 [2020-10-16 01:48:10,338 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3182 transitions. [2020-10-16 01:48:10,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3182 transitions. [2020-10-16 01:48:10,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:48:10,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3182 transitions. [2020-10-16 01:48:10,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 01:48:10,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 01:48:10,350 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 01:48:10,350 INFO L185 Difference]: Start difference. First operand has 118 places, 257 transitions, 4245 flow. Second operand 29 states and 3182 transitions. [2020-10-16 01:48:10,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 406 transitions, 6854 flow [2020-10-16 01:48:11,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 406 transitions, 6475 flow, removed 183 selfloop flow, removed 1 redundant places. [2020-10-16 01:48:11,255 INFO L241 Difference]: Finished difference. Result has 148 places, 290 transitions, 5180 flow [2020-10-16 01:48:11,256 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=4048, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=5180, PETRI_PLACES=148, PETRI_TRANSITIONS=290} [2020-10-16 01:48:11,256 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 114 predicate places. [2020-10-16 01:48:11,256 INFO L481 AbstractCegarLoop]: Abstraction has has 148 places, 290 transitions, 5180 flow [2020-10-16 01:48:11,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 01:48:11,256 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:48:11,256 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:48:11,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-16 01:48:11,256 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 01:48:11,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:48:11,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1225961131, now seen corresponding path program 2 times [2020-10-16 01:48:11,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:48:11,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474690765] [2020-10-16 01:48:11,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:48:11,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:11,312 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 01:48:11,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474690765] [2020-10-16 01:48:11,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:48:11,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 01:48:11,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298773459] [2020-10-16 01:48:11,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 01:48:11,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:48:11,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 01:48:11,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 01:48:11,315 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 160 [2020-10-16 01:48:11,316 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 290 transitions, 5180 flow. Second operand 9 states. [2020-10-16 01:48:11,316 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:48:11,316 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 160 [2020-10-16 01:48:11,316 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:48:12,752 INFO L129 PetriNetUnfolder]: 2084/4468 cut-off events. [2020-10-16 01:48:12,752 INFO L130 PetriNetUnfolder]: For 66261/66557 co-relation queries the response was YES. [2020-10-16 01:48:12,780 INFO L80 FinitePrefix]: Finished finitePrefix Result has 33215 conditions, 4468 events. 2084/4468 cut-off events. For 66261/66557 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 40234 event pairs, 289 based on Foata normal form. 41/4419 useless extension candidates. Maximal degree in co-relation 33164. Up to 1085 conditions per place. [2020-10-16 01:48:12,802 INFO L132 encePairwiseOnDemand]: 151/160 looper letters, 156 selfloop transitions, 253 changer transitions 0/417 dead transitions. [2020-10-16 01:48:12,803 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 417 transitions, 7334 flow [2020-10-16 01:48:12,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 01:48:12,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 01:48:12,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3182 transitions. [2020-10-16 01:48:12,807 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6857758620689656 [2020-10-16 01:48:12,807 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3182 transitions. [2020-10-16 01:48:12,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3182 transitions. [2020-10-16 01:48:12,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:48:12,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3182 transitions. [2020-10-16 01:48:12,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 01:48:12,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 01:48:12,814 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 01:48:12,814 INFO L185 Difference]: Start difference. First operand has 148 places, 290 transitions, 5180 flow. Second operand 29 states and 3182 transitions. [2020-10-16 01:48:12,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 417 transitions, 7334 flow [2020-10-16 01:48:13,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 417 transitions, 6849 flow, removed 32 selfloop flow, removed 20 redundant places. [2020-10-16 01:48:13,940 INFO L241 Difference]: Finished difference. Result has 159 places, 309 transitions, 5637 flow [2020-10-16 01:48:13,940 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=4711, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=5637, PETRI_PLACES=159, PETRI_TRANSITIONS=309} [2020-10-16 01:48:13,940 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 125 predicate places. [2020-10-16 01:48:13,941 INFO L481 AbstractCegarLoop]: Abstraction has has 159 places, 309 transitions, 5637 flow [2020-10-16 01:48:13,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 01:48:13,941 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:48:13,941 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:48:13,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-16 01:48:13,941 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 01:48:13,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:48:13,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1218502129, now seen corresponding path program 3 times [2020-10-16 01:48:13,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:48:13,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555761037] [2020-10-16 01:48:13,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:48:13,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:13,996 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 01:48:13,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555761037] [2020-10-16 01:48:13,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442922328] [2020-10-16 01:48:13,997 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 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 01:48:14,079 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2020-10-16 01:48:14,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 01:48:14,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 01:48:14,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 01:48:14,097 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 01:48:14,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 01:48:14,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-16 01:48:14,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40359496] [2020-10-16 01:48:14,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 01:48:14,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:48:14,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 01:48:14,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 01:48:14,101 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 160 [2020-10-16 01:48:14,101 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 309 transitions, 5637 flow. Second operand 9 states. [2020-10-16 01:48:14,101 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:48:14,102 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 160 [2020-10-16 01:48:14,102 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:48:14,624 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2020-10-16 01:48:15,643 INFO L129 PetriNetUnfolder]: 2083/4393 cut-off events. [2020-10-16 01:48:15,643 INFO L130 PetriNetUnfolder]: For 71932/72546 co-relation queries the response was YES. [2020-10-16 01:48:15,693 INFO L80 FinitePrefix]: Finished finitePrefix Result has 34447 conditions, 4393 events. 2083/4393 cut-off events. For 71932/72546 co-relation queries the response was YES. Maximal size of possible extension queue 633. Compared 39287 event pairs, 266 based on Foata normal form. 31/4345 useless extension candidates. Maximal degree in co-relation 34395. Up to 1089 conditions per place. [2020-10-16 01:48:15,717 INFO L132 encePairwiseOnDemand]: 151/160 looper letters, 162 selfloop transitions, 265 changer transitions 0/435 dead transitions. [2020-10-16 01:48:15,718 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 435 transitions, 7866 flow [2020-10-16 01:48:15,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 01:48:15,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 01:48:15,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3182 transitions. [2020-10-16 01:48:15,721 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6857758620689656 [2020-10-16 01:48:15,722 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3182 transitions. [2020-10-16 01:48:15,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3182 transitions. [2020-10-16 01:48:15,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:48:15,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3182 transitions. [2020-10-16 01:48:15,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 01:48:15,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 01:48:15,729 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 01:48:15,729 INFO L185 Difference]: Start difference. First operand has 159 places, 309 transitions, 5637 flow. Second operand 29 states and 3182 transitions. [2020-10-16 01:48:15,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 435 transitions, 7866 flow [2020-10-16 01:48:16,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 435 transitions, 7426 flow, removed 28 selfloop flow, removed 19 redundant places. [2020-10-16 01:48:16,841 INFO L241 Difference]: Finished difference. Result has 171 places, 334 transitions, 6283 flow [2020-10-16 01:48:16,842 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=5211, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=240, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=6283, PETRI_PLACES=171, PETRI_TRANSITIONS=334} [2020-10-16 01:48:16,842 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 137 predicate places. [2020-10-16 01:48:16,842 INFO L481 AbstractCegarLoop]: Abstraction has has 171 places, 334 transitions, 6283 flow [2020-10-16 01:48:16,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 01:48:16,842 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:48:16,842 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:48:17,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-10-16 01:48:17,043 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 01:48:17,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:48:17,044 INFO L82 PathProgramCache]: Analyzing trace with hash -820266411, now seen corresponding path program 4 times [2020-10-16 01:48:17,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:48:17,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449712291] [2020-10-16 01:48:17,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:48:17,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:17,097 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 01:48:17,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449712291] [2020-10-16 01:48:17,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876228702] [2020-10-16 01:48:17,098 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 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 01:48:17,169 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 01:48:17,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 01:48:17,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 01:48:17,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 01:48:17,180 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 01:48:17,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 01:48:17,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-16 01:48:17,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614843060] [2020-10-16 01:48:17,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 01:48:17,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:48:17,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 01:48:17,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 01:48:17,182 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 160 [2020-10-16 01:48:17,183 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 334 transitions, 6283 flow. Second operand 9 states. [2020-10-16 01:48:17,183 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:48:17,183 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 160 [2020-10-16 01:48:17,183 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:48:18,496 INFO L129 PetriNetUnfolder]: 2082/4434 cut-off events. [2020-10-16 01:48:18,496 INFO L130 PetriNetUnfolder]: For 78471/78893 co-relation queries the response was YES. [2020-10-16 01:48:18,532 INFO L80 FinitePrefix]: Finished finitePrefix Result has 35717 conditions, 4434 events. 2082/4434 cut-off events. For 78471/78893 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 39934 event pairs, 253 based on Foata normal form. 46/4383 useless extension candidates. Maximal degree in co-relation 35662. Up to 1093 conditions per place. [2020-10-16 01:48:18,555 INFO L132 encePairwiseOnDemand]: 151/160 looper letters, 185 selfloop transitions, 266 changer transitions 0/459 dead transitions. [2020-10-16 01:48:18,555 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 459 transitions, 8589 flow [2020-10-16 01:48:18,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 01:48:18,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 01:48:18,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3182 transitions. [2020-10-16 01:48:18,559 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6857758620689656 [2020-10-16 01:48:18,559 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3182 transitions. [2020-10-16 01:48:18,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3182 transitions. [2020-10-16 01:48:18,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:48:18,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3182 transitions. [2020-10-16 01:48:18,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 01:48:18,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 01:48:18,566 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 01:48:18,566 INFO L185 Difference]: Start difference. First operand has 171 places, 334 transitions, 6283 flow. Second operand 29 states and 3182 transitions. [2020-10-16 01:48:18,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 459 transitions, 8589 flow [2020-10-16 01:48:19,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 459 transitions, 8157 flow, removed 26 selfloop flow, removed 19 redundant places. [2020-10-16 01:48:19,911 INFO L241 Difference]: Finished difference. Result has 183 places, 353 transitions, 6847 flow [2020-10-16 01:48:19,912 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=5865, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=247, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=6847, PETRI_PLACES=183, PETRI_TRANSITIONS=353} [2020-10-16 01:48:19,912 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 149 predicate places. [2020-10-16 01:48:19,912 INFO L481 AbstractCegarLoop]: Abstraction has has 183 places, 353 transitions, 6847 flow [2020-10-16 01:48:19,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 01:48:19,912 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:48:19,912 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:48:20,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-10-16 01:48:20,113 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 01:48:20,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:48:20,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1831610987, now seen corresponding path program 5 times [2020-10-16 01:48:20,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:48:20,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863714872] [2020-10-16 01:48:20,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:48:20,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:20,163 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 01:48:20,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863714872] [2020-10-16 01:48:20,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:48:20,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 01:48:20,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517429973] [2020-10-16 01:48:20,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 01:48:20,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:48:20,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 01:48:20,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 01:48:20,166 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 160 [2020-10-16 01:48:20,166 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 353 transitions, 6847 flow. Second operand 9 states. [2020-10-16 01:48:20,166 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:48:20,166 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 160 [2020-10-16 01:48:20,167 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:48:21,491 INFO L129 PetriNetUnfolder]: 2081/4379 cut-off events. [2020-10-16 01:48:21,491 INFO L130 PetriNetUnfolder]: For 84786/85614 co-relation queries the response was YES. [2020-10-16 01:48:21,522 INFO L80 FinitePrefix]: Finished finitePrefix Result has 36919 conditions, 4379 events. 2081/4379 cut-off events. For 84786/85614 co-relation queries the response was YES. Maximal size of possible extension queue 644. Compared 39370 event pairs, 240 based on Foata normal form. 22/4357 useless extension candidates. Maximal degree in co-relation 36861. Up to 1097 conditions per place. [2020-10-16 01:48:21,545 INFO L132 encePairwiseOnDemand]: 151/160 looper letters, 191 selfloop transitions, 274 changer transitions 0/473 dead transitions. [2020-10-16 01:48:21,545 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 473 transitions, 9092 flow [2020-10-16 01:48:21,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 01:48:21,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 01:48:21,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3182 transitions. [2020-10-16 01:48:21,549 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6857758620689656 [2020-10-16 01:48:21,549 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3182 transitions. [2020-10-16 01:48:21,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3182 transitions. [2020-10-16 01:48:21,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:48:21,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3182 transitions. [2020-10-16 01:48:21,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 01:48:21,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 01:48:21,558 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 01:48:21,558 INFO L185 Difference]: Start difference. First operand has 183 places, 353 transitions, 6847 flow. Second operand 29 states and 3182 transitions. [2020-10-16 01:48:21,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 473 transitions, 9092 flow [2020-10-16 01:48:23,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 473 transitions, 8655 flow, removed 36 selfloop flow, removed 18 redundant places. [2020-10-16 01:48:23,035 INFO L241 Difference]: Finished difference. Result has 196 places, 374 transitions, 7438 flow [2020-10-16 01:48:23,036 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=6420, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=253, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=7438, PETRI_PLACES=196, PETRI_TRANSITIONS=374} [2020-10-16 01:48:23,036 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 162 predicate places. [2020-10-16 01:48:23,036 INFO L481 AbstractCegarLoop]: Abstraction has has 196 places, 374 transitions, 7438 flow [2020-10-16 01:48:23,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 01:48:23,036 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:48:23,037 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:48:23,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-16 01:48:23,037 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 01:48:23,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:48:23,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1823367467, now seen corresponding path program 6 times [2020-10-16 01:48:23,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:48:23,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852803620] [2020-10-16 01:48:23,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:48:23,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:23,079 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 01:48:23,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852803620] [2020-10-16 01:48:23,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:48:23,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 01:48:23,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979031301] [2020-10-16 01:48:23,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 01:48:23,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:48:23,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 01:48:23,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 01:48:23,082 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 160 [2020-10-16 01:48:23,082 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 374 transitions, 7438 flow. Second operand 9 states. [2020-10-16 01:48:23,082 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:48:23,083 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 160 [2020-10-16 01:48:23,083 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:48:24,459 INFO L129 PetriNetUnfolder]: 2080/4480 cut-off events. [2020-10-16 01:48:24,460 INFO L130 PetriNetUnfolder]: For 92395/92793 co-relation queries the response was YES. [2020-10-16 01:48:24,490 INFO L80 FinitePrefix]: Finished finitePrefix Result has 38344 conditions, 4480 events. 2080/4480 cut-off events. For 92395/92793 co-relation queries the response was YES. Maximal size of possible extension queue 656. Compared 40617 event pairs, 259 based on Foata normal form. 54/4461 useless extension candidates. Maximal degree in co-relation 38283. Up to 1101 conditions per place. [2020-10-16 01:48:24,513 INFO L132 encePairwiseOnDemand]: 151/160 looper letters, 193 selfloop transitions, 279 changer transitions 0/480 dead transitions. [2020-10-16 01:48:24,513 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 480 transitions, 9490 flow [2020-10-16 01:48:24,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 01:48:24,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 01:48:24,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3182 transitions. [2020-10-16 01:48:24,519 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6857758620689656 [2020-10-16 01:48:24,519 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3182 transitions. [2020-10-16 01:48:24,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3182 transitions. [2020-10-16 01:48:24,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:48:24,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3182 transitions. [2020-10-16 01:48:24,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 01:48:24,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 01:48:24,527 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 01:48:24,527 INFO L185 Difference]: Start difference. First operand has 196 places, 374 transitions, 7438 flow. Second operand 29 states and 3182 transitions. [2020-10-16 01:48:24,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 480 transitions, 9490 flow [2020-10-16 01:48:25,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 480 transitions, 9055 flow, removed 27 selfloop flow, removed 19 redundant places. [2020-10-16 01:48:25,995 INFO L241 Difference]: Finished difference. Result has 208 places, 387 transitions, 7889 flow [2020-10-16 01:48:25,995 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=7009, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=266, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=7889, PETRI_PLACES=208, PETRI_TRANSITIONS=387} [2020-10-16 01:48:25,996 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 174 predicate places. [2020-10-16 01:48:25,996 INFO L481 AbstractCegarLoop]: Abstraction has has 208 places, 387 transitions, 7889 flow [2020-10-16 01:48:25,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 01:48:25,996 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:48:25,996 INFO L255 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:48:25,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-16 01:48:25,996 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 01:48:25,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:48:25,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1637118645, now seen corresponding path program 1 times [2020-10-16 01:48:25,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:48:25,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477757460] [2020-10-16 01:48:25,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:48:26,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 01:48:26,005 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 01:48:26,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 01:48:26,011 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 01:48:26,018 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 01:48:26,018 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 01:48:26,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-16 01:48:26,019 WARN L371 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 01:48:26,019 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-10-16 01:48:26,032 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,032 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,032 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,032 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,032 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,032 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,033 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,033 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,033 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,033 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,033 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,033 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,033 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,034 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,034 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,034 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,034 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,034 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,034 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,034 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,034 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,035 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,035 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,035 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,035 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,035 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,035 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,035 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,036 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,036 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,036 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,036 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,036 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,036 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,036 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,036 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,037 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,037 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,037 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,037 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,037 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,037 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,037 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,037 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,037 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,038 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,038 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,038 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,038 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,038 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,038 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,038 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,039 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,039 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,039 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,039 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,039 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,039 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,039 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,040 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,040 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,040 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,040 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,040 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,040 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,040 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,040 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,041 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,041 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,041 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,041 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,041 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,041 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,041 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,042 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,042 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,042 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,042 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,042 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,042 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,042 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,043 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,043 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,043 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,043 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,043 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,043 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,044 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,044 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,044 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,044 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,044 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,044 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,044 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,044 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,045 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,045 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,045 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,045 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,045 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,045 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,045 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,045 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,046 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,046 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,046 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,046 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,046 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,046 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,047 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,048 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,048 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,048 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,048 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,048 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,049 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,049 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,049 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,050 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,050 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,051 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,051 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,051 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,051 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,051 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,052 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,052 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,052 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,052 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,052 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,053 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,053 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,054 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,054 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,054 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,054 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,055 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,055 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,055 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,055 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,055 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,055 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,056 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,056 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,057 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,057 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,057 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,057 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,058 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,058 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,058 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,058 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,058 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,058 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,059 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,059 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,060 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,060 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,060 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,060 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:48:26,061 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-16 01:48:26,061 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:48:26,061 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:48:26,061 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:48:26,061 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:48:26,062 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:48:26,062 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:48:26,062 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:48:26,062 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:48:26,063 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 139 places, 123 transitions, 336 flow [2020-10-16 01:48:26,074 INFO L129 PetriNetUnfolder]: 7/149 cut-off events. [2020-10-16 01:48:26,074 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-16 01:48:26,075 INFO L80 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 149 events. 7/149 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 256 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 176. Up to 12 conditions per place. [2020-10-16 01:48:26,075 INFO L82 GeneralOperation]: Start removeDead. Operand has 139 places, 123 transitions, 336 flow [2020-10-16 01:48:26,076 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 78 transitions, 204 flow [2020-10-16 01:48:26,076 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:48:26,077 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 78 transitions, 204 flow [2020-10-16 01:48:26,077 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 90 places, 78 transitions, 204 flow [2020-10-16 01:48:26,077 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 90 places, 78 transitions, 204 flow [2020-10-16 01:48:26,087 INFO L129 PetriNetUnfolder]: 7/149 cut-off events. [2020-10-16 01:48:26,087 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-16 01:48:26,088 INFO L80 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 149 events. 7/149 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 282 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 159. Up to 12 conditions per place. [2020-10-16 01:48:26,091 INFO L117 LiptonReduction]: Number of co-enabled transitions 2860 [2020-10-16 01:48:27,091 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-16 01:48:27,158 INFO L132 LiptonReduction]: Checked pairs total: 3913 [2020-10-16 01:48:27,159 INFO L134 LiptonReduction]: Total number of compositions: 61 [2020-10-16 01:48:27,159 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1083 [2020-10-16 01:48:27,160 INFO L129 PetriNetUnfolder]: 0/4 cut-off events. [2020-10-16 01:48:27,160 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:48:27,160 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:48:27,160 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2020-10-16 01:48:27,161 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:48:27,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:48:27,161 INFO L82 PathProgramCache]: Analyzing trace with hash 874831, now seen corresponding path program 1 times [2020-10-16 01:48:27,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:48:27,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968489443] [2020-10-16 01:48:27,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:48:27,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:27,177 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 01:48:27,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968489443] [2020-10-16 01:48:27,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:48:27,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:48:27,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252117521] [2020-10-16 01:48:27,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:48:27,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:48:27,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:48:27,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:48:27,179 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 184 [2020-10-16 01:48:27,179 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 25 transitions, 98 flow. Second operand 3 states. [2020-10-16 01:48:27,179 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:48:27,179 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 184 [2020-10-16 01:48:27,179 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:48:27,350 INFO L129 PetriNetUnfolder]: 2028/2755 cut-off events. [2020-10-16 01:48:27,350 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-16 01:48:27,357 INFO L80 FinitePrefix]: Finished finitePrefix Result has 5515 conditions, 2755 events. 2028/2755 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 12233 event pairs, 449 based on Foata normal form. 0/2376 useless extension candidates. Maximal degree in co-relation 5502. Up to 2533 conditions per place. [2020-10-16 01:48:27,367 INFO L132 encePairwiseOnDemand]: 177/184 looper letters, 18 selfloop transitions, 6 changer transitions 0/36 dead transitions. [2020-10-16 01:48:27,367 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 36 transitions, 168 flow [2020-10-16 01:48:27,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:48:27,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:48:27,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 415 transitions. [2020-10-16 01:48:27,368 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7518115942028986 [2020-10-16 01:48:27,368 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 415 transitions. [2020-10-16 01:48:27,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 415 transitions. [2020-10-16 01:48:27,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:48:27,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 415 transitions. [2020-10-16 01:48:27,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:48:27,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:48:27,369 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:48:27,369 INFO L185 Difference]: Start difference. First operand has 39 places, 25 transitions, 98 flow. Second operand 3 states and 415 transitions. [2020-10-16 01:48:27,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 36 transitions, 168 flow [2020-10-16 01:48:27,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 36 transitions, 147 flow, removed 10 selfloop flow, removed 1 redundant places. [2020-10-16 01:48:27,370 INFO L241 Difference]: Finished difference. Result has 41 places, 30 transitions, 117 flow [2020-10-16 01:48:27,371 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=41, PETRI_TRANSITIONS=30} [2020-10-16 01:48:27,371 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2020-10-16 01:48:27,371 INFO L481 AbstractCegarLoop]: Abstraction has has 41 places, 30 transitions, 117 flow [2020-10-16 01:48:27,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:48:27,371 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:48:27,371 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:48:27,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-16 01:48:27,371 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:48:27,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:48:27,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1633370748, now seen corresponding path program 1 times [2020-10-16 01:48:27,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:48:27,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625812912] [2020-10-16 01:48:27,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:48:27,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:27,398 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 01:48:27,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625812912] [2020-10-16 01:48:27,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:48:27,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:48:27,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279950817] [2020-10-16 01:48:27,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:48:27,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:48:27,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:48:27,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:48:27,401 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 184 [2020-10-16 01:48:27,402 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 30 transitions, 117 flow. Second operand 5 states. [2020-10-16 01:48:27,402 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:48:27,402 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 184 [2020-10-16 01:48:27,402 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:48:27,824 INFO L129 PetriNetUnfolder]: 3268/4565 cut-off events. [2020-10-16 01:48:27,824 INFO L130 PetriNetUnfolder]: For 475/475 co-relation queries the response was YES. [2020-10-16 01:48:27,837 INFO L80 FinitePrefix]: Finished finitePrefix Result has 11597 conditions, 4565 events. 3268/4565 cut-off events. For 475/475 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 23786 event pairs, 1090 based on Foata normal form. 81/4436 useless extension candidates. Maximal degree in co-relation 11582. Up to 2308 conditions per place. [2020-10-16 01:48:27,855 INFO L132 encePairwiseOnDemand]: 176/184 looper letters, 38 selfloop transitions, 16 changer transitions 0/65 dead transitions. [2020-10-16 01:48:27,855 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 65 transitions, 327 flow [2020-10-16 01:48:27,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 01:48:27,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 01:48:27,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 823 transitions. [2020-10-16 01:48:27,856 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7454710144927537 [2020-10-16 01:48:27,856 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 823 transitions. [2020-10-16 01:48:27,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 823 transitions. [2020-10-16 01:48:27,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:48:27,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 823 transitions. [2020-10-16 01:48:27,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 01:48:27,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 01:48:27,859 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 01:48:27,859 INFO L185 Difference]: Start difference. First operand has 41 places, 30 transitions, 117 flow. Second operand 6 states and 823 transitions. [2020-10-16 01:48:27,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 65 transitions, 327 flow [2020-10-16 01:48:27,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 65 transitions, 317 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:48:27,861 INFO L241 Difference]: Finished difference. Result has 48 places, 40 transitions, 216 flow [2020-10-16 01:48:27,861 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2020-10-16 01:48:27,861 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 9 predicate places. [2020-10-16 01:48:27,862 INFO L481 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 216 flow [2020-10-16 01:48:27,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:48:27,862 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:48:27,862 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:48:27,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-16 01:48:27,862 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:48:27,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:48:27,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1187441432, now seen corresponding path program 1 times [2020-10-16 01:48:27,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:48:27,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766498745] [2020-10-16 01:48:27,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:48:27,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:27,882 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 01:48:27,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766498745] [2020-10-16 01:48:27,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:48:27,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:48:27,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202453004] [2020-10-16 01:48:27,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:48:27,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:48:27,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:48:27,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:48:27,885 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 184 [2020-10-16 01:48:27,885 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 216 flow. Second operand 5 states. [2020-10-16 01:48:27,885 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:48:27,886 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 184 [2020-10-16 01:48:27,886 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:48:28,412 INFO L129 PetriNetUnfolder]: 5187/7497 cut-off events. [2020-10-16 01:48:28,412 INFO L130 PetriNetUnfolder]: For 4892/4892 co-relation queries the response was YES. [2020-10-16 01:48:28,442 INFO L80 FinitePrefix]: Finished finitePrefix Result has 24154 conditions, 7497 events. 5187/7497 cut-off events. For 4892/4892 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 45042 event pairs, 1734 based on Foata normal form. 127/7325 useless extension candidates. Maximal degree in co-relation 24135. Up to 3925 conditions per place. [2020-10-16 01:48:28,476 INFO L132 encePairwiseOnDemand]: 176/184 looper letters, 48 selfloop transitions, 25 changer transitions 0/84 dead transitions. [2020-10-16 01:48:28,477 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 84 transitions, 573 flow [2020-10-16 01:48:28,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 01:48:28,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 01:48:28,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 818 transitions. [2020-10-16 01:48:28,478 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7409420289855072 [2020-10-16 01:48:28,478 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 818 transitions. [2020-10-16 01:48:28,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 818 transitions. [2020-10-16 01:48:28,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:48:28,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 818 transitions. [2020-10-16 01:48:28,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 01:48:28,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 01:48:28,481 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 01:48:28,481 INFO L185 Difference]: Start difference. First operand has 48 places, 40 transitions, 216 flow. Second operand 6 states and 818 transitions. [2020-10-16 01:48:28,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 84 transitions, 573 flow [2020-10-16 01:48:28,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 84 transitions, 532 flow, removed 8 selfloop flow, removed 2 redundant places. [2020-10-16 01:48:28,495 INFO L241 Difference]: Finished difference. Result has 54 places, 55 transitions, 378 flow [2020-10-16 01:48:28,495 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=378, PETRI_PLACES=54, PETRI_TRANSITIONS=55} [2020-10-16 01:48:28,495 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 15 predicate places. [2020-10-16 01:48:28,495 INFO L481 AbstractCegarLoop]: Abstraction has has 54 places, 55 transitions, 378 flow [2020-10-16 01:48:28,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:48:28,495 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:48:28,495 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:48:28,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-16 01:48:28,496 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:48:28,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:48:28,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1467459476, now seen corresponding path program 1 times [2020-10-16 01:48:28,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:48:28,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449789118] [2020-10-16 01:48:28,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:48:28,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:28,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 01:48:28,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449789118] [2020-10-16 01:48:28,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049863611] [2020-10-16 01:48:28,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 01:48:28,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:28,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 01:48:28,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 01:48:28,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 01:48:28,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 01:48:28,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 01:48:28,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125688907] [2020-10-16 01:48:28,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 01:48:28,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:48:28,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 01:48:28,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 01:48:28,619 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 184 [2020-10-16 01:48:28,620 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 55 transitions, 378 flow. Second operand 9 states. [2020-10-16 01:48:28,620 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:48:28,620 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 184 [2020-10-16 01:48:28,620 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:48:29,565 INFO L129 PetriNetUnfolder]: 5524/8095 cut-off events. [2020-10-16 01:48:29,566 INFO L130 PetriNetUnfolder]: For 10687/10687 co-relation queries the response was YES. [2020-10-16 01:48:29,587 INFO L80 FinitePrefix]: Finished finitePrefix Result has 30612 conditions, 8095 events. 5524/8095 cut-off events. For 10687/10687 co-relation queries the response was YES. Maximal size of possible extension queue 759. Compared 49996 event pairs, 1393 based on Foata normal form. 27/7827 useless extension candidates. Maximal degree in co-relation 30590. Up to 3668 conditions per place. [2020-10-16 01:48:29,621 INFO L132 encePairwiseOnDemand]: 175/184 looper letters, 77 selfloop transitions, 47 changer transitions 0/134 dead transitions. [2020-10-16 01:48:29,622 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 134 transitions, 974 flow [2020-10-16 01:48:29,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 01:48:29,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 01:48:29,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1745 transitions. [2020-10-16 01:48:29,624 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7295150501672241 [2020-10-16 01:48:29,624 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1745 transitions. [2020-10-16 01:48:29,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1745 transitions. [2020-10-16 01:48:29,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:48:29,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1745 transitions. [2020-10-16 01:48:29,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 01:48:29,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 01:48:29,628 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 01:48:29,629 INFO L185 Difference]: Start difference. First operand has 54 places, 55 transitions, 378 flow. Second operand 13 states and 1745 transitions. [2020-10-16 01:48:29,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 134 transitions, 974 flow [2020-10-16 01:48:29,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 134 transitions, 938 flow, removed 14 selfloop flow, removed 1 redundant places. [2020-10-16 01:48:29,663 INFO L241 Difference]: Finished difference. Result has 68 places, 71 transitions, 604 flow [2020-10-16 01:48:29,664 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=604, PETRI_PLACES=68, PETRI_TRANSITIONS=71} [2020-10-16 01:48:29,664 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 29 predicate places. [2020-10-16 01:48:29,664 INFO L481 AbstractCegarLoop]: Abstraction has has 68 places, 71 transitions, 604 flow [2020-10-16 01:48:29,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 01:48:29,664 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:48:29,664 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:48:29,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-10-16 01:48:29,879 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:48:29,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:48:29,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1330099940, now seen corresponding path program 2 times [2020-10-16 01:48:29,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:48:29,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80543515] [2020-10-16 01:48:29,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:48:29,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:29,912 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 01:48:29,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80543515] [2020-10-16 01:48:29,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:48:29,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 01:48:29,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317659919] [2020-10-16 01:48:29,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 01:48:29,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:48:29,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 01:48:29,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 01:48:29,915 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 184 [2020-10-16 01:48:29,915 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 71 transitions, 604 flow. Second operand 7 states. [2020-10-16 01:48:29,915 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:48:29,916 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 184 [2020-10-16 01:48:29,916 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:48:30,775 INFO L129 PetriNetUnfolder]: 5860/8571 cut-off events. [2020-10-16 01:48:30,775 INFO L130 PetriNetUnfolder]: For 20675/20675 co-relation queries the response was YES. [2020-10-16 01:48:30,828 INFO L80 FinitePrefix]: Finished finitePrefix Result has 37129 conditions, 8571 events. 5860/8571 cut-off events. For 20675/20675 co-relation queries the response was YES. Maximal size of possible extension queue 821. Compared 54145 event pairs, 1396 based on Foata normal form. 27/8330 useless extension candidates. Maximal degree in co-relation 37103. Up to 3411 conditions per place. [2020-10-16 01:48:30,875 INFO L132 encePairwiseOnDemand]: 175/184 looper letters, 81 selfloop transitions, 54 changer transitions 0/145 dead transitions. [2020-10-16 01:48:30,875 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 145 transitions, 1227 flow [2020-10-16 01:48:30,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 01:48:30,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 01:48:30,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1745 transitions. [2020-10-16 01:48:30,877 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7295150501672241 [2020-10-16 01:48:30,877 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1745 transitions. [2020-10-16 01:48:30,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1745 transitions. [2020-10-16 01:48:30,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:48:30,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1745 transitions. [2020-10-16 01:48:30,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 01:48:30,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 01:48:30,886 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 01:48:30,886 INFO L185 Difference]: Start difference. First operand has 68 places, 71 transitions, 604 flow. Second operand 13 states and 1745 transitions. [2020-10-16 01:48:30,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 145 transitions, 1227 flow [2020-10-16 01:48:31,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 145 transitions, 1122 flow, removed 10 selfloop flow, removed 7 redundant places. [2020-10-16 01:48:31,021 INFO L241 Difference]: Finished difference. Result has 76 places, 83 transitions, 759 flow [2020-10-16 01:48:31,021 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=759, PETRI_PLACES=76, PETRI_TRANSITIONS=83} [2020-10-16 01:48:31,022 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 37 predicate places. [2020-10-16 01:48:31,022 INFO L481 AbstractCegarLoop]: Abstraction has has 76 places, 83 transitions, 759 flow [2020-10-16 01:48:31,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 01:48:31,022 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:48:31,022 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:48:31,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-16 01:48:31,022 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:48:31,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:48:31,022 INFO L82 PathProgramCache]: Analyzing trace with hash -301070015, now seen corresponding path program 1 times [2020-10-16 01:48:31,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:48:31,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214516956] [2020-10-16 01:48:31,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:48:31,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:31,052 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 01:48:31,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214516956] [2020-10-16 01:48:31,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:48:31,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:48:31,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009003646] [2020-10-16 01:48:31,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:48:31,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:48:31,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:48:31,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:48:31,054 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 184 [2020-10-16 01:48:31,055 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 83 transitions, 759 flow. Second operand 5 states. [2020-10-16 01:48:31,055 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:48:31,055 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 184 [2020-10-16 01:48:31,055 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:48:32,368 INFO L129 PetriNetUnfolder]: 9063/13811 cut-off events. [2020-10-16 01:48:32,368 INFO L130 PetriNetUnfolder]: For 49101/49129 co-relation queries the response was YES. [2020-10-16 01:48:32,451 INFO L80 FinitePrefix]: Finished finitePrefix Result has 67489 conditions, 13811 events. 9063/13811 cut-off events. For 49101/49129 co-relation queries the response was YES. Maximal size of possible extension queue 1357. Compared 99671 event pairs, 2889 based on Foata normal form. 230/13585 useless extension candidates. Maximal degree in co-relation 67461. Up to 7113 conditions per place. [2020-10-16 01:48:32,521 INFO L132 encePairwiseOnDemand]: 176/184 looper letters, 111 selfloop transitions, 49 changer transitions 0/171 dead transitions. [2020-10-16 01:48:32,521 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 171 transitions, 1905 flow [2020-10-16 01:48:32,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 01:48:32,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 01:48:32,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 824 transitions. [2020-10-16 01:48:32,522 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7463768115942029 [2020-10-16 01:48:32,522 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 824 transitions. [2020-10-16 01:48:32,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 824 transitions. [2020-10-16 01:48:32,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:48:32,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 824 transitions. [2020-10-16 01:48:32,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 01:48:32,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 01:48:32,524 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 01:48:32,524 INFO L185 Difference]: Start difference. First operand has 76 places, 83 transitions, 759 flow. Second operand 6 states and 824 transitions. [2020-10-16 01:48:32,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 171 transitions, 1905 flow [2020-10-16 01:48:32,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 171 transitions, 1682 flow, removed 22 selfloop flow, removed 9 redundant places. [2020-10-16 01:48:32,813 INFO L241 Difference]: Finished difference. Result has 75 places, 115 transitions, 1155 flow [2020-10-16 01:48:32,813 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1155, PETRI_PLACES=75, PETRI_TRANSITIONS=115} [2020-10-16 01:48:32,813 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 36 predicate places. [2020-10-16 01:48:32,813 INFO L481 AbstractCegarLoop]: Abstraction has has 75 places, 115 transitions, 1155 flow [2020-10-16 01:48:32,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:48:32,814 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:48:32,814 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:48:32,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-16 01:48:32,814 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:48:32,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:48:32,814 INFO L82 PathProgramCache]: Analyzing trace with hash 458807869, now seen corresponding path program 1 times [2020-10-16 01:48:32,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:48:32,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146412904] [2020-10-16 01:48:32,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:48:32,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:32,855 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 01:48:32,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146412904] [2020-10-16 01:48:32,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699663771] [2020-10-16 01:48:32,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 01:48:32,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:32,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 01:48:32,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 01:48:32,945 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 01:48:32,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 01:48:32,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 01:48:32,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269189028] [2020-10-16 01:48:32,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 01:48:32,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:48:32,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 01:48:32,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 01:48:32,951 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 184 [2020-10-16 01:48:32,952 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 115 transitions, 1155 flow. Second operand 9 states. [2020-10-16 01:48:32,952 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:48:32,952 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 184 [2020-10-16 01:48:32,952 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:48:34,996 INFO L129 PetriNetUnfolder]: 9689/14859 cut-off events. [2020-10-16 01:48:34,996 INFO L130 PetriNetUnfolder]: For 68531/68565 co-relation queries the response was YES. [2020-10-16 01:48:35,112 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78371 conditions, 14859 events. 9689/14859 cut-off events. For 68531/68565 co-relation queries the response was YES. Maximal size of possible extension queue 1491. Compared 110073 event pairs, 2334 based on Foata normal form. 68/14534 useless extension candidates. Maximal degree in co-relation 78340. Up to 5972 conditions per place. [2020-10-16 01:48:35,214 INFO L132 encePairwiseOnDemand]: 175/184 looper letters, 118 selfloop transitions, 97 changer transitions 0/225 dead transitions. [2020-10-16 01:48:35,214 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 225 transitions, 2441 flow [2020-10-16 01:48:35,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 01:48:35,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 01:48:35,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1760 transitions. [2020-10-16 01:48:35,216 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7357859531772575 [2020-10-16 01:48:35,216 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1760 transitions. [2020-10-16 01:48:35,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1760 transitions. [2020-10-16 01:48:35,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:48:35,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1760 transitions. [2020-10-16 01:48:35,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 01:48:35,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 01:48:35,221 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 01:48:35,221 INFO L185 Difference]: Start difference. First operand has 75 places, 115 transitions, 1155 flow. Second operand 13 states and 1760 transitions. [2020-10-16 01:48:35,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 225 transitions, 2441 flow [2020-10-16 01:48:35,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 225 transitions, 2352 flow, removed 38 selfloop flow, removed 1 redundant places. [2020-10-16 01:48:35,971 INFO L241 Difference]: Finished difference. Result has 89 places, 146 transitions, 1704 flow [2020-10-16 01:48:35,972 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=1090, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1704, PETRI_PLACES=89, PETRI_TRANSITIONS=146} [2020-10-16 01:48:35,972 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 50 predicate places. [2020-10-16 01:48:35,972 INFO L481 AbstractCegarLoop]: Abstraction has has 89 places, 146 transitions, 1704 flow [2020-10-16 01:48:35,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 01:48:35,972 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:48:35,972 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:48:36,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-16 01:48:36,173 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:48:36,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:48:36,174 INFO L82 PathProgramCache]: Analyzing trace with hash 965067293, now seen corresponding path program 1 times [2020-10-16 01:48:36,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:48:36,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554758688] [2020-10-16 01:48:36,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:48:36,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:36,219 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 01:48:36,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554758688] [2020-10-16 01:48:36,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414458608] [2020-10-16 01:48:36,219 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 01:48:36,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:36,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 01:48:36,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 01:48:36,313 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 01:48:36,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 01:48:36,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 01:48:36,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567848881] [2020-10-16 01:48:36,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 01:48:36,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:48:36,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 01:48:36,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 01:48:36,316 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 184 [2020-10-16 01:48:36,317 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 146 transitions, 1704 flow. Second operand 9 states. [2020-10-16 01:48:36,317 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:48:36,317 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 184 [2020-10-16 01:48:36,317 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:48:38,048 INFO L129 PetriNetUnfolder]: 10260/15910 cut-off events. [2020-10-16 01:48:38,048 INFO L130 PetriNetUnfolder]: For 95501/95501 co-relation queries the response was YES. [2020-10-16 01:48:38,165 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90775 conditions, 15910 events. 10260/15910 cut-off events. For 95501/95501 co-relation queries the response was YES. Maximal size of possible extension queue 1613. Compared 120417 event pairs, 2369 based on Foata normal form. 59/15547 useless extension candidates. Maximal degree in co-relation 90740. Up to 5634 conditions per place. [2020-10-16 01:48:38,255 INFO L132 encePairwiseOnDemand]: 175/184 looper letters, 144 selfloop transitions, 110 changer transitions 0/264 dead transitions. [2020-10-16 01:48:38,255 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 264 transitions, 3250 flow [2020-10-16 01:48:38,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 01:48:38,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 01:48:38,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1748 transitions. [2020-10-16 01:48:38,257 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7307692307692307 [2020-10-16 01:48:38,257 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1748 transitions. [2020-10-16 01:48:38,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1748 transitions. [2020-10-16 01:48:38,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:48:38,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1748 transitions. [2020-10-16 01:48:38,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 01:48:38,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 01:48:38,262 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 01:48:38,262 INFO L185 Difference]: Start difference. First operand has 89 places, 146 transitions, 1704 flow. Second operand 13 states and 1748 transitions. [2020-10-16 01:48:38,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 264 transitions, 3250 flow [2020-10-16 01:48:39,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 264 transitions, 3135 flow, removed 36 selfloop flow, removed 3 redundant places. [2020-10-16 01:48:39,417 INFO L241 Difference]: Finished difference. Result has 101 places, 181 transitions, 2342 flow [2020-10-16 01:48:39,418 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=1619, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2342, PETRI_PLACES=101, PETRI_TRANSITIONS=181} [2020-10-16 01:48:39,418 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 62 predicate places. [2020-10-16 01:48:39,418 INFO L481 AbstractCegarLoop]: Abstraction has has 101 places, 181 transitions, 2342 flow [2020-10-16 01:48:39,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 01:48:39,418 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:48:39,418 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:48:39,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-10-16 01:48:39,624 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:48:39,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:48:39,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1565460227, now seen corresponding path program 2 times [2020-10-16 01:48:39,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:48:39,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384626657] [2020-10-16 01:48:39,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:48:39,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:39,833 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 01:48:39,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384626657] [2020-10-16 01:48:39,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:48:39,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 01:48:39,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482145162] [2020-10-16 01:48:39,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 01:48:39,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:48:39,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 01:48:39,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 01:48:39,836 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 184 [2020-10-16 01:48:39,836 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 181 transitions, 2342 flow. Second operand 7 states. [2020-10-16 01:48:39,837 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:48:39,837 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 184 [2020-10-16 01:48:39,837 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:48:42,153 INFO L129 PetriNetUnfolder]: 10713/16682 cut-off events. [2020-10-16 01:48:42,154 INFO L130 PetriNetUnfolder]: For 129074/129108 co-relation queries the response was YES. [2020-10-16 01:48:42,302 INFO L80 FinitePrefix]: Finished finitePrefix Result has 103642 conditions, 16682 events. 10713/16682 cut-off events. For 129074/129108 co-relation queries the response was YES. Maximal size of possible extension queue 1713. Compared 128786 event pairs, 2456 based on Foata normal form. 54/16340 useless extension candidates. Maximal degree in co-relation 103604. Up to 5806 conditions per place. [2020-10-16 01:48:42,403 INFO L132 encePairwiseOnDemand]: 175/184 looper letters, 152 selfloop transitions, 124 changer transitions 0/286 dead transitions. [2020-10-16 01:48:42,403 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 286 transitions, 3841 flow [2020-10-16 01:48:42,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 01:48:42,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 01:48:42,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1760 transitions. [2020-10-16 01:48:42,406 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7357859531772575 [2020-10-16 01:48:42,406 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1760 transitions. [2020-10-16 01:48:42,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1760 transitions. [2020-10-16 01:48:42,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:48:42,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1760 transitions. [2020-10-16 01:48:42,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 01:48:42,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 01:48:42,409 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 01:48:42,409 INFO L185 Difference]: Start difference. First operand has 101 places, 181 transitions, 2342 flow. Second operand 13 states and 1760 transitions. [2020-10-16 01:48:42,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 286 transitions, 3841 flow [2020-10-16 01:48:44,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 286 transitions, 3755 flow, removed 40 selfloop flow, removed 1 redundant places. [2020-10-16 01:48:44,271 INFO L241 Difference]: Finished difference. Result has 115 places, 204 transitions, 2919 flow [2020-10-16 01:48:44,271 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=2284, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2919, PETRI_PLACES=115, PETRI_TRANSITIONS=204} [2020-10-16 01:48:44,272 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 76 predicate places. [2020-10-16 01:48:44,272 INFO L481 AbstractCegarLoop]: Abstraction has has 115 places, 204 transitions, 2919 flow [2020-10-16 01:48:44,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 01:48:44,272 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:48:44,272 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:48:44,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-16 01:48:44,273 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:48:44,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:48:44,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1565467171, now seen corresponding path program 2 times [2020-10-16 01:48:44,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:48:44,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308491492] [2020-10-16 01:48:44,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:48:44,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:44,312 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 01:48:44,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308491492] [2020-10-16 01:48:44,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:48:44,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 01:48:44,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107602321] [2020-10-16 01:48:44,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 01:48:44,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:48:44,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 01:48:44,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 01:48:44,315 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 184 [2020-10-16 01:48:44,315 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 204 transitions, 2919 flow. Second operand 7 states. [2020-10-16 01:48:44,316 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:48:44,316 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 184 [2020-10-16 01:48:44,316 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:48:46,510 INFO L129 PetriNetUnfolder]: 11284/17673 cut-off events. [2020-10-16 01:48:46,510 INFO L130 PetriNetUnfolder]: For 158825/158825 co-relation queries the response was YES. [2020-10-16 01:48:46,691 INFO L80 FinitePrefix]: Finished finitePrefix Result has 118403 conditions, 17673 events. 11284/17673 cut-off events. For 158825/158825 co-relation queries the response was YES. Maximal size of possible extension queue 1836. Compared 139543 event pairs, 2498 based on Foata normal form. 59/17386 useless extension candidates. Maximal degree in co-relation 118361. Up to 6174 conditions per place. [2020-10-16 01:48:46,801 INFO L132 encePairwiseOnDemand]: 175/184 looper letters, 160 selfloop transitions, 140 changer transitions 0/310 dead transitions. [2020-10-16 01:48:46,801 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 310 transitions, 4580 flow [2020-10-16 01:48:46,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 01:48:46,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 01:48:46,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1748 transitions. [2020-10-16 01:48:46,803 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7307692307692307 [2020-10-16 01:48:46,803 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1748 transitions. [2020-10-16 01:48:46,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1748 transitions. [2020-10-16 01:48:46,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:48:46,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1748 transitions. [2020-10-16 01:48:46,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 01:48:46,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 01:48:46,805 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 01:48:46,805 INFO L185 Difference]: Start difference. First operand has 115 places, 204 transitions, 2919 flow. Second operand 13 states and 1748 transitions. [2020-10-16 01:48:46,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 310 transitions, 4580 flow [2020-10-16 01:48:49,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 310 transitions, 4261 flow, removed 41 selfloop flow, removed 9 redundant places. [2020-10-16 01:48:49,948 INFO L241 Difference]: Finished difference. Result has 121 places, 233 transitions, 3449 flow [2020-10-16 01:48:49,948 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=2668, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3449, PETRI_PLACES=121, PETRI_TRANSITIONS=233} [2020-10-16 01:48:49,948 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 82 predicate places. [2020-10-16 01:48:49,948 INFO L481 AbstractCegarLoop]: Abstraction has has 121 places, 233 transitions, 3449 flow [2020-10-16 01:48:49,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 01:48:49,949 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:48:49,949 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:48:49,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-16 01:48:49,949 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:48:49,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:48:49,949 INFO L82 PathProgramCache]: Analyzing trace with hash -251848556, now seen corresponding path program 1 times [2020-10-16 01:48:49,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:48:49,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197109298] [2020-10-16 01:48:49,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:48:49,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:48:49,973 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 01:48:49,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197109298] [2020-10-16 01:48:49,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:48:49,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:48:49,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313277590] [2020-10-16 01:48:49,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:48:49,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:48:49,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:48:49,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:48:49,975 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 184 [2020-10-16 01:48:49,976 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 233 transitions, 3449 flow. Second operand 5 states. [2020-10-16 01:48:49,976 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:48:49,976 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 184 [2020-10-16 01:48:49,976 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:48:53,483 INFO L129 PetriNetUnfolder]: 17075/27646 cut-off events. [2020-10-16 01:48:53,483 INFO L130 PetriNetUnfolder]: For 330076/330452 co-relation queries the response was YES. [2020-10-16 01:48:53,831 INFO L80 FinitePrefix]: Finished finitePrefix Result has 199256 conditions, 27646 events. 17075/27646 cut-off events. For 330076/330452 co-relation queries the response was YES. Maximal size of possible extension queue 2852. Compared 243704 event pairs, 3741 based on Foata normal form. 478/27985 useless extension candidates. Maximal degree in co-relation 199211. Up to 14958 conditions per place. [2020-10-16 01:48:54,055 INFO L132 encePairwiseOnDemand]: 176/184 looper letters, 360 selfloop transitions, 106 changer transitions 0/477 dead transitions. [2020-10-16 01:48:54,055 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 477 transitions, 8157 flow [2020-10-16 01:48:54,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 01:48:54,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 01:48:54,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 818 transitions. [2020-10-16 01:48:54,056 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7409420289855072 [2020-10-16 01:48:54,056 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 818 transitions. [2020-10-16 01:48:54,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 818 transitions. [2020-10-16 01:48:54,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:48:54,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 818 transitions. [2020-10-16 01:48:54,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 01:48:54,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 01:48:54,058 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 01:48:54,058 INFO L185 Difference]: Start difference. First operand has 121 places, 233 transitions, 3449 flow. Second operand 6 states and 818 transitions. [2020-10-16 01:48:54,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 477 transitions, 8157 flow [2020-10-16 01:49:04,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 477 transitions, 7807 flow, removed 60 selfloop flow, removed 7 redundant places. [2020-10-16 01:49:04,828 INFO L241 Difference]: Finished difference. Result has 122 places, 310 transitions, 4984 flow [2020-10-16 01:49:04,829 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=3268, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4984, PETRI_PLACES=122, PETRI_TRANSITIONS=310} [2020-10-16 01:49:04,829 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 83 predicate places. [2020-10-16 01:49:04,829 INFO L481 AbstractCegarLoop]: Abstraction has has 122 places, 310 transitions, 4984 flow [2020-10-16 01:49:04,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:49:04,829 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:49:04,829 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:49:04,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-16 01:49:04,829 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:49:04,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:49:04,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1481129127, now seen corresponding path program 1 times [2020-10-16 01:49:04,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:49:04,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037485111] [2020-10-16 01:49:04,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:49:04,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:49:04,893 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 01:49:04,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037485111] [2020-10-16 01:49:04,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745996517] [2020-10-16 01:49:04,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 01:49:04,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:49:04,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 01:49:04,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 01:49:05,004 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 01:49:05,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 01:49:05,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 01:49:05,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524967484] [2020-10-16 01:49:05,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 01:49:05,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:49:05,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 01:49:05,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 01:49:05,007 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 184 [2020-10-16 01:49:05,008 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 310 transitions, 4984 flow. Second operand 11 states. [2020-10-16 01:49:05,008 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:49:05,008 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 184 [2020-10-16 01:49:05,009 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:49:09,447 INFO L129 PetriNetUnfolder]: 16818/27359 cut-off events. [2020-10-16 01:49:09,447 INFO L130 PetriNetUnfolder]: For 360098/360602 co-relation queries the response was YES. [2020-10-16 01:49:09,746 INFO L80 FinitePrefix]: Finished finitePrefix Result has 209081 conditions, 27359 events. 16818/27359 cut-off events. For 360098/360602 co-relation queries the response was YES. Maximal size of possible extension queue 2879. Compared 243565 event pairs, 3530 based on Foata normal form. 54/27051 useless extension candidates. Maximal degree in co-relation 209033. Up to 9653 conditions per place. [2020-10-16 01:49:09,926 INFO L132 encePairwiseOnDemand]: 174/184 looper letters, 216 selfloop transitions, 297 changer transitions 0/522 dead transitions. [2020-10-16 01:49:09,926 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 522 transitions, 8566 flow [2020-10-16 01:49:09,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 01:49:09,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 01:49:09,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3826 transitions. [2020-10-16 01:49:09,929 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.717016491754123 [2020-10-16 01:49:09,929 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3826 transitions. [2020-10-16 01:49:09,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3826 transitions. [2020-10-16 01:49:09,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:49:09,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3826 transitions. [2020-10-16 01:49:09,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 01:49:09,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 01:49:09,934 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 01:49:09,934 INFO L185 Difference]: Start difference. First operand has 122 places, 310 transitions, 4984 flow. Second operand 29 states and 3826 transitions. [2020-10-16 01:49:09,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 522 transitions, 8566 flow [2020-10-16 01:49:22,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 522 transitions, 8019 flow, removed 263 selfloop flow, removed 1 redundant places. [2020-10-16 01:49:22,743 INFO L241 Difference]: Finished difference. Result has 152 places, 350 transitions, 6117 flow [2020-10-16 01:49:22,744 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=4759, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=257, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=6117, PETRI_PLACES=152, PETRI_TRANSITIONS=350} [2020-10-16 01:49:22,744 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 113 predicate places. [2020-10-16 01:49:22,744 INFO L481 AbstractCegarLoop]: Abstraction has has 152 places, 350 transitions, 6117 flow [2020-10-16 01:49:22,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 01:49:22,744 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:49:22,744 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:49:22,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 01:49:22,945 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:49:22,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:49:22,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1603723083, now seen corresponding path program 2 times [2020-10-16 01:49:22,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:49:22,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124363318] [2020-10-16 01:49:22,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:49:22,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:49:22,997 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 01:49:22,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124363318] [2020-10-16 01:49:22,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050992195] [2020-10-16 01:49:22,997 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 01:49:23,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 01:49:23,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 01:49:23,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 01:49:23,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 01:49:23,100 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 01:49:23,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 01:49:23,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 01:49:23,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180078011] [2020-10-16 01:49:23,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 01:49:23,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:49:23,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 01:49:23,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 01:49:23,103 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 184 [2020-10-16 01:49:23,104 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 350 transitions, 6117 flow. Second operand 11 states. [2020-10-16 01:49:23,104 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:49:23,104 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 184 [2020-10-16 01:49:23,104 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:49:27,951 INFO L129 PetriNetUnfolder]: 16879/27446 cut-off events. [2020-10-16 01:49:27,951 INFO L130 PetriNetUnfolder]: For 430340/431168 co-relation queries the response was YES. [2020-10-16 01:49:28,284 INFO L80 FinitePrefix]: Finished finitePrefix Result has 217802 conditions, 27446 events. 16879/27446 cut-off events. For 430340/431168 co-relation queries the response was YES. Maximal size of possible extension queue 2901. Compared 245601 event pairs, 3131 based on Foata normal form. 32/27195 useless extension candidates. Maximal degree in co-relation 217750. Up to 8561 conditions per place. [2020-10-16 01:49:28,469 INFO L132 encePairwiseOnDemand]: 174/184 looper letters, 221 selfloop transitions, 309 changer transitions 0/539 dead transitions. [2020-10-16 01:49:28,470 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 539 transitions, 9169 flow [2020-10-16 01:49:28,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 01:49:28,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 01:49:28,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3826 transitions. [2020-10-16 01:49:28,474 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.717016491754123 [2020-10-16 01:49:28,474 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3826 transitions. [2020-10-16 01:49:28,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3826 transitions. [2020-10-16 01:49:28,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:49:28,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3826 transitions. [2020-10-16 01:49:28,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 01:49:28,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 01:49:28,479 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 01:49:28,479 INFO L185 Difference]: Start difference. First operand has 152 places, 350 transitions, 6117 flow. Second operand 29 states and 3826 transitions. [2020-10-16 01:49:28,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 539 transitions, 9169 flow [2020-10-16 01:49:45,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 539 transitions, 8582 flow, removed 41 selfloop flow, removed 19 redundant places. [2020-10-16 01:49:45,497 INFO L241 Difference]: Finished difference. Result has 164 places, 374 transitions, 6684 flow [2020-10-16 01:49:45,498 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=5550, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=285, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=6684, PETRI_PLACES=164, PETRI_TRANSITIONS=374} [2020-10-16 01:49:45,498 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 125 predicate places. [2020-10-16 01:49:45,498 INFO L481 AbstractCegarLoop]: Abstraction has has 164 places, 374 transitions, 6684 flow [2020-10-16 01:49:45,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 01:49:45,498 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:49:45,498 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:49:45,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2020-10-16 01:49:45,701 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:49:45,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:49:45,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1624984167, now seen corresponding path program 3 times [2020-10-16 01:49:45,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:49:45,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479705309] [2020-10-16 01:49:45,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:49:45,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:49:45,763 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 01:49:45,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479705309] [2020-10-16 01:49:45,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:49:45,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 01:49:45,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388689087] [2020-10-16 01:49:45,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 01:49:45,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:49:45,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 01:49:45,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 01:49:45,766 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 184 [2020-10-16 01:49:45,767 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 374 transitions, 6684 flow. Second operand 9 states. [2020-10-16 01:49:45,767 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:49:45,767 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 184 [2020-10-16 01:49:45,767 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:49:52,534 INFO L129 PetriNetUnfolder]: 16940/27729 cut-off events. [2020-10-16 01:49:52,534 INFO L130 PetriNetUnfolder]: For 485973/486371 co-relation queries the response was YES. [2020-10-16 01:49:52,872 INFO L80 FinitePrefix]: Finished finitePrefix Result has 229121 conditions, 27729 events. 16940/27729 cut-off events. For 485973/486371 co-relation queries the response was YES. Maximal size of possible extension queue 2928. Compared 248460 event pairs, 3319 based on Foata normal form. 58/27422 useless extension candidates. Maximal degree in co-relation 229068. Up to 8608 conditions per place. [2020-10-16 01:49:53,061 INFO L132 encePairwiseOnDemand]: 174/184 looper letters, 231 selfloop transitions, 323 changer transitions 0/563 dead transitions. [2020-10-16 01:49:53,061 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 563 transitions, 9913 flow [2020-10-16 01:49:53,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 01:49:53,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 01:49:53,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3826 transitions. [2020-10-16 01:49:53,065 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.717016491754123 [2020-10-16 01:49:53,065 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3826 transitions. [2020-10-16 01:49:53,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3826 transitions. [2020-10-16 01:49:53,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:49:53,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3826 transitions. [2020-10-16 01:49:53,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 01:49:53,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 01:49:53,072 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 01:49:53,072 INFO L185 Difference]: Start difference. First operand has 164 places, 374 transitions, 6684 flow. Second operand 29 states and 3826 transitions. [2020-10-16 01:49:53,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 563 transitions, 9913 flow [2020-10-16 01:50:11,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 563 transitions, 9378 flow, removed 38 selfloop flow, removed 18 redundant places. [2020-10-16 01:50:11,758 INFO L241 Difference]: Finished difference. Result has 177 places, 404 transitions, 7458 flow [2020-10-16 01:50:11,759 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=6166, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=293, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=7458, PETRI_PLACES=177, PETRI_TRANSITIONS=404} [2020-10-16 01:50:11,759 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 138 predicate places. [2020-10-16 01:50:11,759 INFO L481 AbstractCegarLoop]: Abstraction has has 177 places, 404 transitions, 7458 flow [2020-10-16 01:50:11,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 01:50:11,759 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:50:11,759 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:50:11,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-16 01:50:11,759 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:50:11,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:50:11,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1655972161, now seen corresponding path program 4 times [2020-10-16 01:50:11,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:50:11,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355429258] [2020-10-16 01:50:11,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:50:11,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:50:11,804 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 01:50:11,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355429258] [2020-10-16 01:50:11,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391901154] [2020-10-16 01:50:11,804 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 01:50:11,882 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 01:50:11,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 01:50:11,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 01:50:11,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 01:50:11,916 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 01:50:11,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 01:50:11,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 01:50:11,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971347439] [2020-10-16 01:50:11,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 01:50:11,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:50:11,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 01:50:11,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 01:50:11,919 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 184 [2020-10-16 01:50:11,921 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 404 transitions, 7458 flow. Second operand 11 states. [2020-10-16 01:50:11,921 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:50:11,921 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 184 [2020-10-16 01:50:11,921 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:50:17,762 INFO L129 PetriNetUnfolder]: 17001/27786 cut-off events. [2020-10-16 01:50:17,763 INFO L130 PetriNetUnfolder]: For 561259/561899 co-relation queries the response was YES. [2020-10-16 01:50:18,119 INFO L80 FinitePrefix]: Finished finitePrefix Result has 238877 conditions, 27786 events. 17001/27786 cut-off events. For 561259/561899 co-relation queries the response was YES. Maximal size of possible extension queue 2948. Compared 249798 event pairs, 3206 based on Foata normal form. 31/27532 useless extension candidates. Maximal degree in co-relation 238821. Up to 8649 conditions per place. [2020-10-16 01:50:18,317 INFO L132 encePairwiseOnDemand]: 174/184 looper letters, 259 selfloop transitions, 325 changer transitions 0/593 dead transitions. [2020-10-16 01:50:18,317 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 593 transitions, 10830 flow [2020-10-16 01:50:18,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 01:50:18,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 01:50:18,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3826 transitions. [2020-10-16 01:50:18,320 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.717016491754123 [2020-10-16 01:50:18,320 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3826 transitions. [2020-10-16 01:50:18,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3826 transitions. [2020-10-16 01:50:18,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:50:18,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3826 transitions. [2020-10-16 01:50:18,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 01:50:18,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 01:50:18,327 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 01:50:18,327 INFO L185 Difference]: Start difference. First operand has 177 places, 404 transitions, 7458 flow. Second operand 29 states and 3826 transitions. [2020-10-16 01:50:18,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 593 transitions, 10830 flow [2020-10-16 01:50:37,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 593 transitions, 10293 flow, removed 35 selfloop flow, removed 19 redundant places. [2020-10-16 01:50:37,904 INFO L241 Difference]: Finished difference. Result has 189 places, 428 transitions, 8145 flow [2020-10-16 01:50:37,904 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=6939, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=301, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=8145, PETRI_PLACES=189, PETRI_TRANSITIONS=428} [2020-10-16 01:50:37,904 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 150 predicate places. [2020-10-16 01:50:37,904 INFO L481 AbstractCegarLoop]: Abstraction has has 189 places, 428 transitions, 8145 flow [2020-10-16 01:50:37,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 01:50:37,904 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:50:37,905 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:50:38,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2020-10-16 01:50:38,106 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:50:38,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:50:38,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1168716135, now seen corresponding path program 5 times [2020-10-16 01:50:38,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:50:38,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519332112] [2020-10-16 01:50:38,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:50:38,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:50:38,153 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 01:50:38,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519332112] [2020-10-16 01:50:38,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:50:38,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 01:50:38,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626352975] [2020-10-16 01:50:38,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 01:50:38,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:50:38,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 01:50:38,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 01:50:38,156 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 184 [2020-10-16 01:50:38,156 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 428 transitions, 8145 flow. Second operand 9 states. [2020-10-16 01:50:38,156 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:50:38,156 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 184 [2020-10-16 01:50:38,156 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:50:43,505 INFO L129 PetriNetUnfolder]: 17062/27979 cut-off events. [2020-10-16 01:50:43,505 INFO L130 PetriNetUnfolder]: For 626891/627395 co-relation queries the response was YES. [2020-10-16 01:50:47,476 INFO L80 FinitePrefix]: Finished finitePrefix Result has 249197 conditions, 27979 events. 17062/27979 cut-off events. For 626891/627395 co-relation queries the response was YES. Maximal size of possible extension queue 2968. Compared 252399 event pairs, 3411 based on Foata normal form. 60/27701 useless extension candidates. Maximal degree in co-relation 249138. Up to 8700 conditions per place. [2020-10-16 01:50:47,688 INFO L132 encePairwiseOnDemand]: 174/184 looper letters, 269 selfloop transitions, 334 changer transitions 0/612 dead transitions. [2020-10-16 01:50:47,688 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 612 transitions, 11544 flow [2020-10-16 01:50:47,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 01:50:47,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 01:50:47,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3826 transitions. [2020-10-16 01:50:47,691 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.717016491754123 [2020-10-16 01:50:47,692 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3826 transitions. [2020-10-16 01:50:47,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3826 transitions. [2020-10-16 01:50:47,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:50:47,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3826 transitions. [2020-10-16 01:50:47,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 01:50:47,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 01:50:47,697 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 01:50:47,698 INFO L185 Difference]: Start difference. First operand has 189 places, 428 transitions, 8145 flow. Second operand 29 states and 3826 transitions. [2020-10-16 01:50:47,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 612 transitions, 11544 flow [2020-10-16 01:51:07,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 612 transitions, 10988 flow, removed 49 selfloop flow, removed 19 redundant places. [2020-10-16 01:51:07,145 INFO L241 Difference]: Finished difference. Result has 201 places, 453 transitions, 8832 flow [2020-10-16 01:51:07,146 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=7601, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=309, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=8832, PETRI_PLACES=201, PETRI_TRANSITIONS=453} [2020-10-16 01:51:07,146 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 162 predicate places. [2020-10-16 01:51:07,146 INFO L481 AbstractCegarLoop]: Abstraction has has 201 places, 453 transitions, 8832 flow [2020-10-16 01:51:07,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 01:51:07,146 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:51:07,146 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:51:07,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-16 01:51:07,147 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:51:07,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:51:07,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1175382375, now seen corresponding path program 6 times [2020-10-16 01:51:07,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:51:07,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642874887] [2020-10-16 01:51:07,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:51:07,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:51:07,208 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 01:51:07,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642874887] [2020-10-16 01:51:07,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:51:07,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 01:51:07,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740158593] [2020-10-16 01:51:07,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 01:51:07,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:51:07,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 01:51:07,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 01:51:07,211 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 184 [2020-10-16 01:51:07,212 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 453 transitions, 8832 flow. Second operand 9 states. [2020-10-16 01:51:07,212 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:51:07,212 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 184 [2020-10-16 01:51:07,213 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:51:12,666 INFO L129 PetriNetUnfolder]: 17123/28164 cut-off events. [2020-10-16 01:51:12,667 INFO L130 PetriNetUnfolder]: For 691214/691636 co-relation queries the response was YES. [2020-10-16 01:51:13,094 INFO L80 FinitePrefix]: Finished finitePrefix Result has 259730 conditions, 28164 events. 17123/28164 cut-off events. For 691214/691636 co-relation queries the response was YES. Maximal size of possible extension queue 2987. Compared 254309 event pairs, 3225 based on Foata normal form. 59/27822 useless extension candidates. Maximal degree in co-relation 259668. Up to 8726 conditions per place. [2020-10-16 01:51:13,308 INFO L132 encePairwiseOnDemand]: 174/184 looper letters, 274 selfloop transitions, 341 changer transitions 0/624 dead transitions. [2020-10-16 01:51:13,308 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 624 transitions, 12152 flow [2020-10-16 01:51:13,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 01:51:13,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 01:51:13,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3826 transitions. [2020-10-16 01:51:13,311 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.717016491754123 [2020-10-16 01:51:13,311 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3826 transitions. [2020-10-16 01:51:13,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3826 transitions. [2020-10-16 01:51:13,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:51:13,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3826 transitions. [2020-10-16 01:51:13,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 01:51:13,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 01:51:13,317 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 01:51:13,317 INFO L185 Difference]: Start difference. First operand has 201 places, 453 transitions, 8832 flow. Second operand 29 states and 3826 transitions. [2020-10-16 01:51:13,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 624 transitions, 12152 flow [2020-10-16 01:51:37,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 624 transitions, 11582 flow, removed 38 selfloop flow, removed 20 redundant places. [2020-10-16 01:51:37,027 INFO L241 Difference]: Finished difference. Result has 212 places, 472 transitions, 9447 flow [2020-10-16 01:51:37,027 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=8270, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=322, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=9447, PETRI_PLACES=212, PETRI_TRANSITIONS=472} [2020-10-16 01:51:37,027 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 173 predicate places. [2020-10-16 01:51:37,027 INFO L481 AbstractCegarLoop]: Abstraction has has 212 places, 472 transitions, 9447 flow [2020-10-16 01:51:37,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 01:51:37,027 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:51:37,028 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:51:37,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-16 01:51:37,028 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:51:37,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:51:37,028 INFO L82 PathProgramCache]: Analyzing trace with hash 2107807768, now seen corresponding path program 1 times [2020-10-16 01:51:37,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:51:37,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181278819] [2020-10-16 01:51:37,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:51:37,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:51:37,068 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-16 01:51:37,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181278819] [2020-10-16 01:51:37,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324837317] [2020-10-16 01:51:37,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 01:51:37,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:51:37,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 01:51:37,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 01:51:37,162 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-16 01:51:37,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 01:51:37,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 01:51:37,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190599020] [2020-10-16 01:51:37,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 01:51:37,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:51:37,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 01:51:37,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 01:51:37,165 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 184 [2020-10-16 01:51:37,166 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 472 transitions, 9447 flow. Second operand 9 states. [2020-10-16 01:51:37,166 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:51:37,166 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 184 [2020-10-16 01:51:37,166 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:51:43,301 INFO L129 PetriNetUnfolder]: 18563/30810 cut-off events. [2020-10-16 01:51:43,301 INFO L130 PetriNetUnfolder]: For 810437/811111 co-relation queries the response was YES. [2020-10-16 01:51:43,806 INFO L80 FinitePrefix]: Finished finitePrefix Result has 295198 conditions, 30810 events. 18563/30810 cut-off events. For 810437/811111 co-relation queries the response was YES. Maximal size of possible extension queue 3270. Compared 284457 event pairs, 3336 based on Foata normal form. 217/30901 useless extension candidates. Maximal degree in co-relation 295133. Up to 9791 conditions per place. [2020-10-16 01:51:44,033 INFO L132 encePairwiseOnDemand]: 175/184 looper letters, 471 selfloop transitions, 326 changer transitions 0/807 dead transitions. [2020-10-16 01:51:44,033 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 807 transitions, 17539 flow [2020-10-16 01:51:44,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 01:51:44,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 01:51:44,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1747 transitions. [2020-10-16 01:51:44,036 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7303511705685619 [2020-10-16 01:51:44,036 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1747 transitions. [2020-10-16 01:51:44,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1747 transitions. [2020-10-16 01:51:44,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:51:44,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1747 transitions. [2020-10-16 01:51:44,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 01:51:44,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 01:51:44,039 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 01:51:44,039 INFO L185 Difference]: Start difference. First operand has 212 places, 472 transitions, 9447 flow. Second operand 13 states and 1747 transitions. [2020-10-16 01:51:44,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 807 transitions, 17539 flow [2020-10-16 01:52:14,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 807 transitions, 16666 flow, removed 56 selfloop flow, removed 20 redundant places. [2020-10-16 01:52:14,494 INFO L241 Difference]: Finished difference. Result has 207 places, 578 transitions, 12310 flow [2020-10-16 01:52:14,495 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=8884, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=220, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=12310, PETRI_PLACES=207, PETRI_TRANSITIONS=578} [2020-10-16 01:52:14,495 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 168 predicate places. [2020-10-16 01:52:14,495 INFO L481 AbstractCegarLoop]: Abstraction has has 207 places, 578 transitions, 12310 flow [2020-10-16 01:52:14,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 01:52:14,495 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:52:14,495 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:52:14,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-10-16 01:52:14,708 INFO L429 AbstractCegarLoop]: === Iteration 19 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:52:14,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:52:14,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1509505488, now seen corresponding path program 1 times [2020-10-16 01:52:14,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:52:14,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227094788] [2020-10-16 01:52:14,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:52:14,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:52:14,746 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 01:52:14,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227094788] [2020-10-16 01:52:14,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:52:14,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 01:52:14,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635197417] [2020-10-16 01:52:14,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 01:52:14,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:52:14,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 01:52:14,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 01:52:14,748 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 184 [2020-10-16 01:52:14,749 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 578 transitions, 12310 flow. Second operand 7 states. [2020-10-16 01:52:14,749 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:52:14,749 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 184 [2020-10-16 01:52:14,749 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:52:21,634 INFO L129 PetriNetUnfolder]: 19556/32996 cut-off events. [2020-10-16 01:52:21,634 INFO L130 PetriNetUnfolder]: For 967862/968290 co-relation queries the response was YES. [2020-10-16 01:52:22,203 INFO L80 FinitePrefix]: Finished finitePrefix Result has 326396 conditions, 32996 events. 19556/32996 cut-off events. For 967862/968290 co-relation queries the response was YES. Maximal size of possible extension queue 3522. Compared 311102 event pairs, 4471 based on Foata normal form. 189/32740 useless extension candidates. Maximal degree in co-relation 326328. Up to 10425 conditions per place. [2020-10-16 01:52:22,453 INFO L132 encePairwiseOnDemand]: 175/184 looper letters, 562 selfloop transitions, 348 changer transitions 0/920 dead transitions. [2020-10-16 01:52:22,453 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 920 transitions, 20795 flow [2020-10-16 01:52:22,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 01:52:22,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 01:52:22,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1735 transitions. [2020-10-16 01:52:22,455 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7253344481605352 [2020-10-16 01:52:22,455 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1735 transitions. [2020-10-16 01:52:22,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1735 transitions. [2020-10-16 01:52:22,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:52:22,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1735 transitions. [2020-10-16 01:52:22,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 01:52:22,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 01:52:22,457 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 01:52:22,457 INFO L185 Difference]: Start difference. First operand has 207 places, 578 transitions, 12310 flow. Second operand 13 states and 1735 transitions. [2020-10-16 01:52:22,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 920 transitions, 20795 flow [2020-10-16 01:53:01,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 920 transitions, 20413 flow, removed 158 selfloop flow, removed 3 redundant places. [2020-10-16 01:53:01,423 INFO L241 Difference]: Finished difference. Result has 219 places, 688 transitions, 15627 flow [2020-10-16 01:53:01,423 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=11990, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=238, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=15627, PETRI_PLACES=219, PETRI_TRANSITIONS=688} [2020-10-16 01:53:01,424 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 180 predicate places. [2020-10-16 01:53:01,424 INFO L481 AbstractCegarLoop]: Abstraction has has 219 places, 688 transitions, 15627 flow [2020-10-16 01:53:01,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 01:53:01,424 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:53:01,424 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:53:01,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-16 01:53:01,424 INFO L429 AbstractCegarLoop]: === Iteration 20 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:53:01,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:53:01,425 INFO L82 PathProgramCache]: Analyzing trace with hash 154202698, now seen corresponding path program 1 times [2020-10-16 01:53:01,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:53:01,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048796670] [2020-10-16 01:53:01,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:53:01,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:53:01,460 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-16 01:53:01,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048796670] [2020-10-16 01:53:01,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174489511] [2020-10-16 01:53:01,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 01:53:01,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:53:01,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 01:53:01,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 01:53:01,566 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-16 01:53:01,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 01:53:01,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 01:53:01,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718163185] [2020-10-16 01:53:01,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 01:53:01,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:53:01,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 01:53:01,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 01:53:01,568 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 184 [2020-10-16 01:53:01,569 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 688 transitions, 15627 flow. Second operand 9 states. [2020-10-16 01:53:01,569 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:53:01,569 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 184 [2020-10-16 01:53:01,569 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:53:10,106 INFO L129 PetriNetUnfolder]: 20416/35053 cut-off events. [2020-10-16 01:53:10,106 INFO L130 PetriNetUnfolder]: For 1105509/1105539 co-relation queries the response was YES. [2020-10-16 01:53:10,733 INFO L80 FinitePrefix]: Finished finitePrefix Result has 359767 conditions, 35053 events. 20416/35053 cut-off events. For 1105509/1105539 co-relation queries the response was YES. Maximal size of possible extension queue 3757. Compared 340295 event pairs, 4102 based on Foata normal form. 150/34638 useless extension candidates. Maximal degree in co-relation 359696. Up to 10783 conditions per place. [2020-10-16 01:53:11,000 INFO L132 encePairwiseOnDemand]: 175/184 looper letters, 650 selfloop transitions, 377 changer transitions 0/1037 dead transitions. [2020-10-16 01:53:11,000 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 1037 transitions, 24751 flow [2020-10-16 01:53:11,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 01:53:11,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 01:53:11,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1748 transitions. [2020-10-16 01:53:11,002 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7307692307692307 [2020-10-16 01:53:11,002 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1748 transitions. [2020-10-16 01:53:11,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1748 transitions. [2020-10-16 01:53:11,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:53:11,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1748 transitions. [2020-10-16 01:53:11,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 01:53:11,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 01:53:11,004 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 01:53:11,004 INFO L185 Difference]: Start difference. First operand has 219 places, 688 transitions, 15627 flow. Second operand 13 states and 1748 transitions. [2020-10-16 01:53:11,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 1037 transitions, 24751 flow [2020-10-16 01:54:05,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 1037 transitions, 24410 flow, removed 166 selfloop flow, removed 1 redundant places. [2020-10-16 01:54:05,751 INFO L241 Difference]: Finished difference. Result has 233 places, 805 transitions, 19305 flow [2020-10-16 01:54:05,752 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=15348, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=688, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=260, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=19305, PETRI_PLACES=233, PETRI_TRANSITIONS=805} [2020-10-16 01:54:05,752 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 194 predicate places. [2020-10-16 01:54:05,752 INFO L481 AbstractCegarLoop]: Abstraction has has 233 places, 805 transitions, 19305 flow [2020-10-16 01:54:05,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 01:54:05,752 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:54:05,752 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:54:05,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 01:54:05,959 INFO L429 AbstractCegarLoop]: === Iteration 21 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:54:05,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:54:05,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1508285328, now seen corresponding path program 2 times [2020-10-16 01:54:05,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:54:05,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439917923] [2020-10-16 01:54:05,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:54:05,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:54:05,999 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 01:54:05,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439917923] [2020-10-16 01:54:06,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:54:06,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 01:54:06,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300340179] [2020-10-16 01:54:06,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 01:54:06,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:54:06,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 01:54:06,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 01:54:06,002 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 184 [2020-10-16 01:54:06,004 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 805 transitions, 19305 flow. Second operand 7 states. [2020-10-16 01:54:06,004 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:54:06,004 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 184 [2020-10-16 01:54:06,004 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:54:16,362 INFO L129 PetriNetUnfolder]: 20963/35844 cut-off events. [2020-10-16 01:54:16,362 INFO L130 PetriNetUnfolder]: For 1247511/1247939 co-relation queries the response was YES. [2020-10-16 01:54:17,007 INFO L80 FinitePrefix]: Finished finitePrefix Result has 384149 conditions, 35844 events. 20963/35844 cut-off events. For 1247511/1247939 co-relation queries the response was YES. Maximal size of possible extension queue 3877. Compared 348807 event pairs, 4043 based on Foata normal form. 131/35646 useless extension candidates. Maximal degree in co-relation 384074. Up to 10947 conditions per place. [2020-10-16 01:54:17,286 INFO L132 encePairwiseOnDemand]: 175/184 looper letters, 690 selfloop transitions, 398 changer transitions 0/1098 dead transitions. [2020-10-16 01:54:17,286 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 1098 transitions, 26903 flow [2020-10-16 01:54:17,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 01:54:17,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 01:54:17,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1735 transitions. [2020-10-16 01:54:17,288 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7253344481605352 [2020-10-16 01:54:17,288 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1735 transitions. [2020-10-16 01:54:17,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1735 transitions. [2020-10-16 01:54:17,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:54:17,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1735 transitions. [2020-10-16 01:54:17,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 01:54:17,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 01:54:17,290 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 01:54:17,290 INFO L185 Difference]: Start difference. First operand has 233 places, 805 transitions, 19305 flow. Second operand 13 states and 1735 transitions. [2020-10-16 01:54:17,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 1098 transitions, 26903 flow [2020-10-16 01:55:28,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 1098 transitions, 26546 flow, removed 174 selfloop flow, removed 1 redundant places. [2020-10-16 01:55:28,463 INFO L241 Difference]: Finished difference. Result has 247 places, 867 transitions, 21483 flow [2020-10-16 01:55:28,464 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=19014, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=805, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=336, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=21483, PETRI_PLACES=247, PETRI_TRANSITIONS=867} [2020-10-16 01:55:28,464 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 208 predicate places. [2020-10-16 01:55:28,464 INFO L481 AbstractCegarLoop]: Abstraction has has 247 places, 867 transitions, 21483 flow [2020-10-16 01:55:28,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 01:55:28,464 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:55:28,464 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:55:28,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-16 01:55:28,465 INFO L429 AbstractCegarLoop]: === Iteration 22 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:55:28,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:55:28,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1508278384, now seen corresponding path program 2 times [2020-10-16 01:55:28,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:55:28,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026432366] [2020-10-16 01:55:28,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:55:28,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:55:28,501 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 01:55:28,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026432366] [2020-10-16 01:55:28,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:55:28,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 01:55:28,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672506712] [2020-10-16 01:55:28,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 01:55:28,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:55:28,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 01:55:28,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 01:55:28,504 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 184 [2020-10-16 01:55:28,504 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 867 transitions, 21483 flow. Second operand 7 states. [2020-10-16 01:55:28,504 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:55:28,504 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 184 [2020-10-16 01:55:28,504 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:55:40,111 INFO L129 PetriNetUnfolder]: 21640/37526 cut-off events. [2020-10-16 01:55:40,111 INFO L130 PetriNetUnfolder]: For 1438392/1439060 co-relation queries the response was YES. [2020-10-16 01:55:40,744 INFO L80 FinitePrefix]: Finished finitePrefix Result has 411573 conditions, 37526 events. 21640/37526 cut-off events. For 1438392/1439060 co-relation queries the response was YES. Maximal size of possible extension queue 4092. Compared 371276 event pairs, 5107 based on Foata normal form. 181/36980 useless extension candidates. Maximal degree in co-relation 411494. Up to 11169 conditions per place. [2020-10-16 01:55:41,031 INFO L132 encePairwiseOnDemand]: 175/184 looper letters, 707 selfloop transitions, 431 changer transitions 0/1148 dead transitions. [2020-10-16 01:55:41,031 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 1148 transitions, 29104 flow [2020-10-16 01:55:41,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 01:55:41,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 01:55:41,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1747 transitions. [2020-10-16 01:55:41,033 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7303511705685619 [2020-10-16 01:55:41,033 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1747 transitions. [2020-10-16 01:55:41,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1747 transitions. [2020-10-16 01:55:41,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:55:41,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1747 transitions. [2020-10-16 01:55:41,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 01:55:41,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 01:55:41,037 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 01:55:41,037 INFO L185 Difference]: Start difference. First operand has 247 places, 867 transitions, 21483 flow. Second operand 13 states and 1747 transitions. [2020-10-16 01:55:41,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 1148 transitions, 29104 flow [2020-10-16 01:57:00,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 1148 transitions, 28203 flow, removed 116 selfloop flow, removed 7 redundant places. [2020-10-16 01:57:00,595 INFO L241 Difference]: Finished difference. Result has 255 places, 939 transitions, 23525 flow [2020-10-16 01:57:00,596 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=20735, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=867, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=359, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=23525, PETRI_PLACES=255, PETRI_TRANSITIONS=939} [2020-10-16 01:57:00,596 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 216 predicate places. [2020-10-16 01:57:00,596 INFO L481 AbstractCegarLoop]: Abstraction has has 255 places, 939 transitions, 23525 flow [2020-10-16 01:57:00,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 01:57:00,597 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:57:00,597 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:57:00,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-16 01:57:00,597 INFO L429 AbstractCegarLoop]: === Iteration 23 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:57:00,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:57:00,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1508270882, now seen corresponding path program 2 times [2020-10-16 01:57:00,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:57:00,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304916621] [2020-10-16 01:57:00,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:57:00,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:57:00,635 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 01:57:00,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304916621] [2020-10-16 01:57:00,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:57:00,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 01:57:00,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575892321] [2020-10-16 01:57:00,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 01:57:00,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:57:00,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 01:57:00,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 01:57:00,637 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 184 [2020-10-16 01:57:00,638 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 939 transitions, 23525 flow. Second operand 7 states. [2020-10-16 01:57:00,638 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:57:00,638 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 184 [2020-10-16 01:57:00,638 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:57:14,050 INFO L129 PetriNetUnfolder]: 22448/38961 cut-off events. [2020-10-16 01:57:14,051 INFO L130 PetriNetUnfolder]: For 1540535/1540565 co-relation queries the response was YES. [2020-10-16 01:57:14,722 INFO L80 FinitePrefix]: Finished finitePrefix Result has 436981 conditions, 38961 events. 22448/38961 cut-off events. For 1540535/1540565 co-relation queries the response was YES. Maximal size of possible extension queue 4229. Compared 387592 event pairs, 4464 based on Foata normal form. 142/38543 useless extension candidates. Maximal degree in co-relation 436899. Up to 11783 conditions per place. [2020-10-16 01:57:15,023 INFO L132 encePairwiseOnDemand]: 175/184 looper letters, 730 selfloop transitions, 476 changer transitions 0/1216 dead transitions. [2020-10-16 01:57:15,023 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 1216 transitions, 31250 flow [2020-10-16 01:57:15,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 01:57:15,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 01:57:15,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1748 transitions. [2020-10-16 01:57:15,025 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7307692307692307 [2020-10-16 01:57:15,025 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1748 transitions. [2020-10-16 01:57:15,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1748 transitions. [2020-10-16 01:57:15,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:57:15,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1748 transitions. [2020-10-16 01:57:15,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 01:57:15,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 01:57:15,027 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 01:57:15,027 INFO L185 Difference]: Start difference. First operand has 255 places, 939 transitions, 23525 flow. Second operand 13 states and 1748 transitions. [2020-10-16 01:57:15,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 1216 transitions, 31250 flow [2020-10-16 01:59:06,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 1216 transitions, 30616 flow, removed 141 selfloop flow, removed 7 redundant places. [2020-10-16 01:59:06,704 INFO L241 Difference]: Finished difference. Result has 263 places, 1025 transitions, 26293 flow [2020-10-16 01:59:06,705 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=23020, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=939, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=390, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=526, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=26293, PETRI_PLACES=263, PETRI_TRANSITIONS=1025} [2020-10-16 01:59:06,705 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 224 predicate places. [2020-10-16 01:59:06,705 INFO L481 AbstractCegarLoop]: Abstraction has has 263 places, 1025 transitions, 26293 flow [2020-10-16 01:59:06,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 01:59:06,705 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:59:06,706 INFO L255 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:59:06,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-16 01:59:06,706 INFO L429 AbstractCegarLoop]: === Iteration 24 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:59:06,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:59:06,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1852153529, now seen corresponding path program 1 times [2020-10-16 01:59:06,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:59:06,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738073909] [2020-10-16 01:59:06,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:59:06,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:59:06,729 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-16 01:59:06,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738073909] [2020-10-16 01:59:06,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:59:06,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:59:06,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610525383] [2020-10-16 01:59:06,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:59:06,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:59:06,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:59:06,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:59:06,732 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 184 [2020-10-16 01:59:06,732 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 1025 transitions, 26293 flow. Second operand 5 states. [2020-10-16 01:59:06,732 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:59:06,733 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 184 [2020-10-16 01:59:06,733 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:59:29,735 INFO L129 PetriNetUnfolder]: 36333/64644 cut-off events. [2020-10-16 01:59:29,735 INFO L130 PetriNetUnfolder]: For 3035531/3039469 co-relation queries the response was YES. [2020-10-16 01:59:30,957 INFO L80 FinitePrefix]: Finished finitePrefix Result has 726416 conditions, 64644 events. 36333/64644 cut-off events. For 3035531/3039469 co-relation queries the response was YES. Maximal size of possible extension queue 6875. Compared 700411 event pairs, 8696 based on Foata normal form. 1309/65565 useless extension candidates. Maximal degree in co-relation 726331. Up to 38195 conditions per place. [2020-10-16 01:59:33,384 INFO L132 encePairwiseOnDemand]: 176/184 looper letters, 1711 selfloop transitions, 323 changer transitions 0/2045 dead transitions. [2020-10-16 01:59:33,384 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 2045 transitions, 57806 flow [2020-10-16 01:59:33,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 01:59:33,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 01:59:33,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 824 transitions. [2020-10-16 01:59:33,386 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7463768115942029 [2020-10-16 01:59:33,386 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 824 transitions. [2020-10-16 01:59:33,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 824 transitions. [2020-10-16 01:59:33,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:59:33,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 824 transitions. [2020-10-16 01:59:33,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 01:59:33,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 01:59:33,388 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 01:59:33,388 INFO L185 Difference]: Start difference. First operand has 263 places, 1025 transitions, 26293 flow. Second operand 6 states and 824 transitions. [2020-10-16 01:59:33,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 2045 transitions, 57806 flow Received shutdown request... [2020-10-16 02:01:31,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-16 02:01:31,930 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-16 02:01:31,933 WARN L235 ceAbstractionStarter]: Timeout [2020-10-16 02:01:31,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:01:31 BasicIcfg [2020-10-16 02:01:31,933 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 02:01:31,934 INFO L168 Benchmark]: Toolchain (without parser) took 820342.40 ms. Allocated memory was 247.5 MB in the beginning and 4.8 GB in the end (delta: 4.5 GB). Free memory was 202.5 MB in the beginning and 3.4 GB in the end (delta: -3.2 GB). Peak memory consumption was 5.7 GB. Max. memory is 14.2 GB. [2020-10-16 02:01:31,934 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 247.5 MB. Free memory is still 223.8 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 02:01:31,934 INFO L168 Benchmark]: CACSL2BoogieTranslator took 631.97 ms. Allocated memory was 247.5 MB in the beginning and 302.5 MB in the end (delta: 55.1 MB). Free memory was 202.5 MB in the beginning and 255.9 MB in the end (delta: -53.3 MB). Peak memory consumption was 26.8 MB. Max. memory is 14.2 GB. [2020-10-16 02:01:31,935 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.78 ms. Allocated memory is still 302.5 MB. Free memory was 255.9 MB in the beginning and 253.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 02:01:31,935 INFO L168 Benchmark]: Boogie Preprocessor took 28.25 ms. Allocated memory is still 302.5 MB. Free memory was 253.4 MB in the beginning and 250.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 02:01:31,935 INFO L168 Benchmark]: RCFGBuilder took 390.59 ms. Allocated memory is still 302.5 MB. Free memory was 250.9 MB in the beginning and 231.5 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 14.2 GB. [2020-10-16 02:01:31,936 INFO L168 Benchmark]: TraceAbstraction took 819243.77 ms. Allocated memory was 302.5 MB in the beginning and 4.8 GB in the end (delta: 4.5 GB). Free memory was 231.5 MB in the beginning and 3.4 GB in the end (delta: -3.1 GB). Peak memory consumption was 5.7 GB. Max. memory is 14.2 GB. [2020-10-16 02:01:31,938 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 ms. Allocated memory is still 247.5 MB. Free memory is still 223.8 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 631.97 ms. Allocated memory was 247.5 MB in the beginning and 302.5 MB in the end (delta: 55.1 MB). Free memory was 202.5 MB in the beginning and 255.9 MB in the end (delta: -53.3 MB). Peak memory consumption was 26.8 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 42.78 ms. Allocated memory is still 302.5 MB. Free memory was 255.9 MB in the beginning and 253.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 28.25 ms. Allocated memory is still 302.5 MB. Free memory was 253.4 MB in the beginning and 250.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 390.59 ms. Allocated memory is still 302.5 MB. Free memory was 250.9 MB in the beginning and 231.5 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 14.2 GB. * TraceAbstraction took 819243.77 ms. Allocated memory was 302.5 MB in the beginning and 4.8 GB in the end (delta: 4.5 GB). Free memory was 231.5 MB in the beginning and 3.4 GB in the end (delta: -3.1 GB). Peak memory consumption was 5.7 GB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 484 VarBasedMoverChecksPositive, 4 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 4 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 3 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.1s, 54 PlacesBefore, 17 PlacesAfterwards, 50 TransitionsBefore, 11 TransitionsAfterwards, 692 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 47 TotalNumberOfCompositions, 670 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 741 VarBasedMoverChecksPositive, 9 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 9 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 31 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 0.9s, 63 PlacesBefore, 24 PlacesAfterwards, 57 TransitionsBefore, 16 TransitionsAfterwards, 1108 CoEnabledTransitionPairs, 4 FixpointIterations, 13 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 49 TotalNumberOfCompositions, 1246 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1057 VarBasedMoverChecksPositive, 19 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 19 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 45 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.0s, 72 PlacesBefore, 29 PlacesAfterwards, 64 TransitionsBefore, 19 TransitionsAfterwards, 1608 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 52 TotalNumberOfCompositions, 2267 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1336 VarBasedMoverChecksPositive, 22 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 22 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 60 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.0s, 81 PlacesBefore, 34 PlacesAfterwards, 71 TransitionsBefore, 22 TransitionsAfterwards, 2192 CoEnabledTransitionPairs, 4 FixpointIterations, 13 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 55 TotalNumberOfCompositions, 2992 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1867 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 24 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 112 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.0s, 90 PlacesBefore, 39 PlacesAfterwards, 78 TransitionsBefore, 25 TransitionsAfterwards, 2860 CoEnabledTransitionPairs, 4 FixpointIterations, 13 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 61 TotalNumberOfCompositions, 3913 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, 49 locations, 1 error locations. Started 5 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 818.9s, OverallIterations: 56, TraceHistogramMax: 5, AutomataDifference: 806.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.3s, HoareTripleCheckerStatistics: 844 SDtfs, 4116 SDslu, 1191 SDs, 0 SdLazy, 7147 SolverSat, 659 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 941 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 715 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3446 ImplicationChecksByTransitivity, 5.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26293occurred in iteration=23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 1131 NumberOfCodeBlocks, 1123 NumberOfCodeBlocksAsserted, 73 NumberOfCheckSat, 1006 ConstructedInterpolants, 0 QuantifiedInterpolants, 51948 SizeOfPredicates, 66 NumberOfNonLiveVariables, 1497 ConjunctsInSsa, 94 ConjunctsInUnsatCore, 66 InterpolantComputations, 38 PerfectInterpolantSequences, 380/494 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