/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe011_rmo.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 20:22:50,386 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 20:22:50,389 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 20:22:50,427 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-11 20:22:50,454 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 20:22:50,456 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 20:22:50,457 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 20:22:50,458 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 20:22:50,461 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 20:22:50,462 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 20:22:50,464 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 20:22:50,473 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 20:22:50,474 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 20:22:50,476 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 20:22:50,477 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 20:22:50,478 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 20:22:50,479 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 20:22:50,485 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 20:22:50,486 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 20:22:50,486 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 20:22:50,493 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 [2021-03-11 20:22:50,521 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 20:22:50,521 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 20:22:50,523 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 20:22:50,523 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 20:22:50,523 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 20:22:50,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 20:22:50,523 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 20:22:50,523 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 20:22:50,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 20:22:50,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 20:22:50,524 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 20:22:50,524 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 20:22:50,524 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 20:22:50,524 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 20:22:50,524 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 20:22:50,524 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 20:22:50,525 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 20:22:50,525 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 20:22:50,525 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 20:22:50,525 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 20:22:50,525 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 20:22:50,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 20:22:50,526 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 20:22:50,526 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 20:22:50,526 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 20:22:50,526 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 20:22:50,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 20:22:50,526 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 20:22:50,526 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 20:22:50,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 20:22:50,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 20:22:50,854 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 20:22:50,855 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 20:22:50,855 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 20:22:50,856 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe011_rmo.opt.i [2021-03-11 20:22:50,915 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a42401ba/cca65f28371c419daba0a1558c12a7e8/FLAG743d1d6df [2021-03-11 20:22:51,456 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 20:22:51,456 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_rmo.opt.i [2021-03-11 20:22:51,470 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a42401ba/cca65f28371c419daba0a1558c12a7e8/FLAG743d1d6df [2021-03-11 20:22:51,929 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a42401ba/cca65f28371c419daba0a1558c12a7e8 [2021-03-11 20:22:51,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 20:22:51,934 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 20:22:51,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 20:22:51,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 20:22:51,940 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 20:22:51,940 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:22:51" (1/1) ... [2021-03-11 20:22:51,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dfaab0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:22:51, skipping insertion in model container [2021-03-11 20:22:51,941 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:22:51" (1/1) ... [2021-03-11 20:22:51,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 20:22:51,988 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 20:22:52,092 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_rmo.opt.i[949,962] [2021-03-11 20:22:52,328 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:22:52,335 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 20:22:52,353 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_rmo.opt.i[949,962] [2021-03-11 20:22:52,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:22:52,461 INFO L208 MainTranslator]: Completed translation [2021-03-11 20:22:52,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:22:52 WrapperNode [2021-03-11 20:22:52,461 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 20:22:52,462 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 20:22:52,463 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 20:22:52,464 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 20:22:52,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:22:52" (1/1) ... [2021-03-11 20:22:52,505 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:22:52" (1/1) ... [2021-03-11 20:22:52,542 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 20:22:52,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 20:22:52,543 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 20:22:52,543 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 20:22:52,551 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:22:52" (1/1) ... [2021-03-11 20:22:52,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:22:52" (1/1) ... [2021-03-11 20:22:52,568 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:22:52" (1/1) ... [2021-03-11 20:22:52,569 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:22:52" (1/1) ... [2021-03-11 20:22:52,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:22:52" (1/1) ... [2021-03-11 20:22:52,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:22:52" (1/1) ... [2021-03-11 20:22:52,581 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:22:52" (1/1) ... [2021-03-11 20:22:52,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 20:22:52,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 20:22:52,585 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 20:22:52,586 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 20:22:52,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:22:52" (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 [2021-03-11 20:22:52,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 20:22:52,661 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 20:22:52,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 20:22:52,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 20:22:52,663 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 20:22:52,663 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 20:22:52,664 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 20:22:52,664 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 20:22:52,664 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-11 20:22:52,664 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-11 20:22:52,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 20:22:52,665 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 20:22:52,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 20:22:52,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 20:22:52,666 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 20:22:54,491 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 20:22:54,491 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-03-11 20:22:54,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:22:54 BoogieIcfgContainer [2021-03-11 20:22:54,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 20:22:54,497 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 20:22:54,497 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 20:22:54,500 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 20:22:54,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 08:22:51" (1/3) ... [2021-03-11 20:22:54,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@374376ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:22:54, skipping insertion in model container [2021-03-11 20:22:54,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:22:52" (2/3) ... [2021-03-11 20:22:54,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@374376ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:22:54, skipping insertion in model container [2021-03-11 20:22:54,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:22:54" (3/3) ... [2021-03-11 20:22:54,503 INFO L111 eAbstractionObserver]: Analyzing ICFG safe011_rmo.opt.i [2021-03-11 20:22:54,508 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 20:22:54,512 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-11 20:22:54,513 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 20:22:54,546 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,546 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,546 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,546 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,546 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,546 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,547 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,547 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,547 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,547 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,547 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,547 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,548 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,548 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,548 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,548 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,548 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,548 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,549 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,549 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,549 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,549 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,549 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,549 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,550 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,550 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,550 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,550 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,550 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,550 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,551 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,551 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,551 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,551 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,551 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,551 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,552 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,552 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,552 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,552 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,552 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,552 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,552 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,552 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,553 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,553 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,553 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,553 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,553 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,553 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,554 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,554 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,554 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,554 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,554 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,554 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,555 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,555 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,555 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,555 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,555 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,555 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,555 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,556 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,556 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,556 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,556 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,556 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,556 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,557 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,557 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,557 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,557 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,557 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,557 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,557 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,558 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,558 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,558 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,558 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,558 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,558 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,563 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,563 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,563 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,564 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,565 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,566 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,566 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,566 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,566 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,566 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,566 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,567 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,567 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,567 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,569 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,569 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,570 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,570 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,571 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,573 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,574 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,574 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,574 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,579 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,581 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,581 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,581 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,581 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,582 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,582 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,582 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,582 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,582 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,582 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,582 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,582 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:54,584 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 20:22:54,600 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-03-11 20:22:54,629 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 20:22:54,629 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 20:22:54,629 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 20:22:54,629 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 20:22:54,629 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 20:22:54,629 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 20:22:54,629 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 20:22:54,629 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 20:22:54,642 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 105 places, 97 transitions, 209 flow [2021-03-11 20:22:54,684 INFO L129 PetriNetUnfolder]: 2/94 cut-off events. [2021-03-11 20:22:54,685 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:22:54,696 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 94 events. 2/94 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 69 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 61. Up to 2 conditions per place. [2021-03-11 20:22:54,696 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 97 transitions, 209 flow [2021-03-11 20:22:54,700 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 94 transitions, 197 flow [2021-03-11 20:22:54,704 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 20:22:54,713 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 94 transitions, 197 flow [2021-03-11 20:22:54,715 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 94 transitions, 197 flow [2021-03-11 20:22:54,715 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 102 places, 94 transitions, 197 flow [2021-03-11 20:22:54,745 INFO L129 PetriNetUnfolder]: 2/94 cut-off events. [2021-03-11 20:22:54,745 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:22:54,746 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 94 events. 2/94 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 67 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 61. Up to 2 conditions per place. [2021-03-11 20:22:54,749 INFO L116 LiptonReduction]: Number of co-enabled transitions 1694 [2021-03-11 20:22:55,479 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2021-03-11 20:22:55,915 WARN L205 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 81 [2021-03-11 20:22:56,038 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-03-11 20:22:57,217 WARN L205 SmtUtils]: Spent 772.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 186 [2021-03-11 20:22:57,530 WARN L205 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2021-03-11 20:22:58,925 WARN L205 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 310 DAG size of output: 266 [2021-03-11 20:22:59,518 WARN L205 SmtUtils]: Spent 591.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2021-03-11 20:23:00,290 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-03-11 20:23:00,416 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-03-11 20:23:02,129 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2021-03-11 20:23:02,308 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2021-03-11 20:23:02,689 WARN L205 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 112 [2021-03-11 20:23:02,834 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2021-03-11 20:23:03,126 WARN L205 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 112 [2021-03-11 20:23:03,260 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2021-03-11 20:23:03,264 INFO L131 LiptonReduction]: Checked pairs total: 4744 [2021-03-11 20:23:03,264 INFO L133 LiptonReduction]: Total number of compositions: 80 [2021-03-11 20:23:03,265 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8565 [2021-03-11 20:23:03,276 INFO L129 PetriNetUnfolder]: 0/4 cut-off events. [2021-03-11 20:23:03,277 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:23:03,277 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:23:03,277 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2021-03-11 20:23:03,278 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:23:03,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:23:03,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1056982, now seen corresponding path program 1 times [2021-03-11 20:23:03,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:23:03,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084279961] [2021-03-11 20:23:03,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:23:03,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:23:03,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:03,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:23:03,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:23:03,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084279961] [2021-03-11 20:23:03,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:23:03,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 20:23:03,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686552148] [2021-03-11 20:23:03,518 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:23:03,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:23:03,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:23:03,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:23:03,530 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 177 [2021-03-11 20:23:03,532 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:03,532 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:23:03,533 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 177 [2021-03-11 20:23:03,533 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:23:03,615 INFO L129 PetriNetUnfolder]: 49/134 cut-off events. [2021-03-11 20:23:03,615 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:23:03,616 INFO L84 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 134 events. 49/134 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 592 event pairs, 38 based on Foata normal form. 11/128 useless extension candidates. Maximal degree in co-relation 220. Up to 65 conditions per place. [2021-03-11 20:23:03,617 INFO L132 encePairwiseOnDemand]: 173/177 looper letters, 9 selfloop transitions, 2 changer transitions 0/27 dead transitions. [2021-03-11 20:23:03,617 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 27 transitions, 85 flow [2021-03-11 20:23:03,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:23:03,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:23:03,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 458 transitions. [2021-03-11 20:23:03,630 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8625235404896422 [2021-03-11 20:23:03,630 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 458 transitions. [2021-03-11 20:23:03,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 458 transitions. [2021-03-11 20:23:03,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:23:03,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 458 transitions. [2021-03-11 20:23:03,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:03,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:03,647 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:03,648 INFO L185 Difference]: Start difference. First operand has 34 places, 25 transitions, 59 flow. Second operand 3 states and 458 transitions. [2021-03-11 20:23:03,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 27 transitions, 85 flow [2021-03-11 20:23:03,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 27 transitions, 82 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-11 20:23:03,652 INFO L241 Difference]: Finished difference. Result has 32 places, 23 transitions, 56 flow [2021-03-11 20:23:03,654 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=32, PETRI_TRANSITIONS=23} [2021-03-11 20:23:03,655 INFO L335 CegarLoopForPetriNet]: 34 programPoint places, -2 predicate places. [2021-03-11 20:23:03,655 INFO L480 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 56 flow [2021-03-11 20:23:03,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:03,655 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:23:03,655 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:23:03,656 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 20:23:03,656 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:23:03,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:23:03,657 INFO L82 PathProgramCache]: Analyzing trace with hash 5125493, now seen corresponding path program 1 times [2021-03-11 20:23:03,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:23:03,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793808540] [2021-03-11 20:23:03,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:23:03,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:23:03,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:03,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:23:03,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:03,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:23:03,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:23:03,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793808540] [2021-03-11 20:23:03,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:23:03,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:23:03,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744906414] [2021-03-11 20:23:03,885 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:23:03,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:23:03,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:23:03,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:23:03,887 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 177 [2021-03-11 20:23:03,888 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 56 flow. Second operand has 4 states, 4 states have (on average 145.75) internal successors, (583), 4 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:03,888 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:23:03,888 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 177 [2021-03-11 20:23:03,888 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:23:03,935 INFO L129 PetriNetUnfolder]: 12/72 cut-off events. [2021-03-11 20:23:03,935 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:23:03,936 INFO L84 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 72 events. 12/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 251 event pairs, 3 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 107. Up to 20 conditions per place. [2021-03-11 20:23:03,937 INFO L132 encePairwiseOnDemand]: 172/177 looper letters, 4 selfloop transitions, 3 changer transitions 8/32 dead transitions. [2021-03-11 20:23:03,937 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 32 transitions, 104 flow [2021-03-11 20:23:03,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:23:03,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:23:03,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 742 transitions. [2021-03-11 20:23:03,941 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8384180790960452 [2021-03-11 20:23:03,941 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 742 transitions. [2021-03-11 20:23:03,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 742 transitions. [2021-03-11 20:23:03,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:23:03,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 742 transitions. [2021-03-11 20:23:03,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.4) internal successors, (742), 5 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:03,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:03,946 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:03,946 INFO L185 Difference]: Start difference. First operand has 32 places, 23 transitions, 56 flow. Second operand 5 states and 742 transitions. [2021-03-11 20:23:03,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 32 transitions, 104 flow [2021-03-11 20:23:03,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 32 transitions, 100 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 20:23:03,947 INFO L241 Difference]: Finished difference. Result has 37 places, 24 transitions, 77 flow [2021-03-11 20:23:03,947 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=77, PETRI_PLACES=37, PETRI_TRANSITIONS=24} [2021-03-11 20:23:03,947 INFO L335 CegarLoopForPetriNet]: 34 programPoint places, 3 predicate places. [2021-03-11 20:23:03,948 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 24 transitions, 77 flow [2021-03-11 20:23:03,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 145.75) internal successors, (583), 4 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:03,948 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:23:03,948 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:23:03,948 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 20:23:03,948 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:23:03,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:23:03,949 INFO L82 PathProgramCache]: Analyzing trace with hash 158868358, now seen corresponding path program 1 times [2021-03-11 20:23:03,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:23:03,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806176670] [2021-03-11 20:23:03,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:23:04,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:23:04,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:04,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:23:04,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:04,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:23:04,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:23:04,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806176670] [2021-03-11 20:23:04,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:23:04,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:23:04,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98820795] [2021-03-11 20:23:04,099 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:23:04,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:23:04,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:23:04,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:23:04,101 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 177 [2021-03-11 20:23:04,102 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 24 transitions, 77 flow. Second operand has 4 states, 4 states have (on average 146.75) internal successors, (587), 4 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:04,102 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:23:04,102 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 177 [2021-03-11 20:23:04,102 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:23:04,133 INFO L129 PetriNetUnfolder]: 7/54 cut-off events. [2021-03-11 20:23:04,133 INFO L130 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2021-03-11 20:23:04,134 INFO L84 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 54 events. 7/54 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 169 event pairs, 3 based on Foata normal form. 5/55 useless extension candidates. Maximal degree in co-relation 100. Up to 17 conditions per place. [2021-03-11 20:23:04,134 INFO L132 encePairwiseOnDemand]: 173/177 looper letters, 2 selfloop transitions, 2 changer transitions 2/26 dead transitions. [2021-03-11 20:23:04,134 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 26 transitions, 95 flow [2021-03-11 20:23:04,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:23:04,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:23:04,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 738 transitions. [2021-03-11 20:23:04,137 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8338983050847457 [2021-03-11 20:23:04,137 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 738 transitions. [2021-03-11 20:23:04,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 738 transitions. [2021-03-11 20:23:04,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:23:04,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 738 transitions. [2021-03-11 20:23:04,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 147.6) internal successors, (738), 5 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:04,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:04,141 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:04,141 INFO L185 Difference]: Start difference. First operand has 37 places, 24 transitions, 77 flow. Second operand 5 states and 738 transitions. [2021-03-11 20:23:04,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 26 transitions, 95 flow [2021-03-11 20:23:04,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 26 transitions, 90 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-11 20:23:04,143 INFO L241 Difference]: Finished difference. Result has 39 places, 24 transitions, 84 flow [2021-03-11 20:23:04,143 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=84, PETRI_PLACES=39, PETRI_TRANSITIONS=24} [2021-03-11 20:23:04,143 INFO L335 CegarLoopForPetriNet]: 34 programPoint places, 5 predicate places. [2021-03-11 20:23:04,143 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 24 transitions, 84 flow [2021-03-11 20:23:04,144 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 146.75) internal successors, (587), 4 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:04,144 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:23:04,144 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:23:04,144 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 20:23:04,144 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:23:04,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:23:04,144 INFO L82 PathProgramCache]: Analyzing trace with hash -346227015, now seen corresponding path program 1 times [2021-03-11 20:23:04,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:23:04,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342021758] [2021-03-11 20:23:04,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:23:04,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:23:04,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:04,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:23:04,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:04,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:23:04,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:04,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:23:04,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:23:04,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342021758] [2021-03-11 20:23:04,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:23:04,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:23:04,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996150729] [2021-03-11 20:23:04,253 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:23:04,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:23:04,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:23:04,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:23:04,254 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 177 [2021-03-11 20:23:04,255 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 24 transitions, 84 flow. Second operand has 5 states, 5 states have (on average 141.8) internal successors, (709), 5 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:04,255 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:23:04,255 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 177 [2021-03-11 20:23:04,255 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:23:04,306 INFO L129 PetriNetUnfolder]: 8/55 cut-off events. [2021-03-11 20:23:04,306 INFO L130 PetriNetUnfolder]: For 56/65 co-relation queries the response was YES. [2021-03-11 20:23:04,307 INFO L84 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 55 events. 8/55 cut-off events. For 56/65 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 205 event pairs, 1 based on Foata normal form. 6/58 useless extension candidates. Maximal degree in co-relation 117. Up to 17 conditions per place. [2021-03-11 20:23:04,307 INFO L132 encePairwiseOnDemand]: 172/177 looper letters, 3 selfloop transitions, 3 changer transitions 3/28 dead transitions. [2021-03-11 20:23:04,307 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 28 transitions, 121 flow [2021-03-11 20:23:04,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 20:23:04,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-11 20:23:04,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 857 transitions. [2021-03-11 20:23:04,309 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8069679849340866 [2021-03-11 20:23:04,310 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 857 transitions. [2021-03-11 20:23:04,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 857 transitions. [2021-03-11 20:23:04,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:23:04,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 857 transitions. [2021-03-11 20:23:04,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 142.83333333333334) internal successors, (857), 6 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:04,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 177.0) internal successors, (1239), 7 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:04,314 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 177.0) internal successors, (1239), 7 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:04,315 INFO L185 Difference]: Start difference. First operand has 39 places, 24 transitions, 84 flow. Second operand 6 states and 857 transitions. [2021-03-11 20:23:04,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 28 transitions, 121 flow [2021-03-11 20:23:04,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 28 transitions, 109 flow, removed 3 selfloop flow, removed 4 redundant places. [2021-03-11 20:23:04,316 INFO L241 Difference]: Finished difference. Result has 42 places, 25 transitions, 97 flow [2021-03-11 20:23:04,316 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=97, PETRI_PLACES=42, PETRI_TRANSITIONS=25} [2021-03-11 20:23:04,316 INFO L335 CegarLoopForPetriNet]: 34 programPoint places, 8 predicate places. [2021-03-11 20:23:04,317 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 25 transitions, 97 flow [2021-03-11 20:23:04,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 141.8) internal successors, (709), 5 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:04,317 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:23:04,317 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:23:04,317 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 20:23:04,317 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:23:04,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:23:04,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1947750085, now seen corresponding path program 1 times [2021-03-11 20:23:04,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:23:04,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080718465] [2021-03-11 20:23:04,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:23:04,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:23:04,417 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.7 percent of original size [2021-03-11 20:23:04,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-03-11 20:23:04,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:04,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 20:23:04,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:04,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:23:04,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:23:04,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080718465] [2021-03-11 20:23:04,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:23:04,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:23:04,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100715020] [2021-03-11 20:23:04,472 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:23:04,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:23:04,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:23:04,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:23:04,474 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 177 [2021-03-11 20:23:04,475 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 25 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 125.8) internal successors, (629), 5 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:04,475 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:23:04,475 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 177 [2021-03-11 20:23:04,475 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:23:04,633 INFO L129 PetriNetUnfolder]: 215/441 cut-off events. [2021-03-11 20:23:04,633 INFO L130 PetriNetUnfolder]: For 502/543 co-relation queries the response was YES. [2021-03-11 20:23:04,636 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1019 conditions, 441 events. 215/441 cut-off events. For 502/543 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2311 event pairs, 155 based on Foata normal form. 28/442 useless extension candidates. Maximal degree in co-relation 1002. Up to 313 conditions per place. [2021-03-11 20:23:04,639 INFO L132 encePairwiseOnDemand]: 171/177 looper letters, 9 selfloop transitions, 4 changer transitions 9/38 dead transitions. [2021-03-11 20:23:04,639 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 38 transitions, 175 flow [2021-03-11 20:23:04,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:23:04,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:23:04,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 649 transitions. [2021-03-11 20:23:04,641 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2021-03-11 20:23:04,641 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 649 transitions. [2021-03-11 20:23:04,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 649 transitions. [2021-03-11 20:23:04,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:23:04,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 649 transitions. [2021-03-11 20:23:04,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 129.8) internal successors, (649), 5 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:04,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:04,645 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:04,645 INFO L185 Difference]: Start difference. First operand has 42 places, 25 transitions, 97 flow. Second operand 5 states and 649 transitions. [2021-03-11 20:23:04,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 38 transitions, 175 flow [2021-03-11 20:23:04,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 38 transitions, 167 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-03-11 20:23:04,648 INFO L241 Difference]: Finished difference. Result has 43 places, 28 transitions, 125 flow [2021-03-11 20:23:04,648 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=125, PETRI_PLACES=43, PETRI_TRANSITIONS=28} [2021-03-11 20:23:04,649 INFO L335 CegarLoopForPetriNet]: 34 programPoint places, 9 predicate places. [2021-03-11 20:23:04,649 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 28 transitions, 125 flow [2021-03-11 20:23:04,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 125.8) internal successors, (629), 5 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:04,649 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:23:04,649 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:23:04,649 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 20:23:04,649 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:23:04,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:23:04,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1090576971, now seen corresponding path program 1 times [2021-03-11 20:23:04,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:23:04,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860825488] [2021-03-11 20:23:04,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:23:04,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:23:04,722 INFO L142 QuantifierPusher]: treesize reduction 30, result has 30.2 percent of original size [2021-03-11 20:23:04,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 20:23:04,743 INFO L142 QuantifierPusher]: treesize reduction 40, result has 54.0 percent of original size [2021-03-11 20:23:04,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 20:23:04,767 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.3 percent of original size [2021-03-11 20:23:04,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-11 20:23:04,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:04,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:23:04,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:23:04,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860825488] [2021-03-11 20:23:04,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:23:04,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 20:23:04,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115233562] [2021-03-11 20:23:04,800 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 20:23:04,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:23:04,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 20:23:04,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-11 20:23:04,802 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 177 [2021-03-11 20:23:04,804 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 28 transitions, 125 flow. Second operand has 6 states, 6 states have (on average 125.83333333333333) internal successors, (755), 6 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:04,805 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:23:04,805 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 177 [2021-03-11 20:23:04,805 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:23:05,021 INFO L129 PetriNetUnfolder]: 207/432 cut-off events. [2021-03-11 20:23:05,021 INFO L130 PetriNetUnfolder]: For 948/1151 co-relation queries the response was YES. [2021-03-11 20:23:05,022 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1342 conditions, 432 events. 207/432 cut-off events. For 948/1151 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2263 event pairs, 72 based on Foata normal form. 43/455 useless extension candidates. Maximal degree in co-relation 1324. Up to 288 conditions per place. [2021-03-11 20:23:05,026 INFO L132 encePairwiseOnDemand]: 170/177 looper letters, 11 selfloop transitions, 8 changer transitions 12/47 dead transitions. [2021-03-11 20:23:05,027 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 47 transitions, 289 flow [2021-03-11 20:23:05,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 20:23:05,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 20:23:05,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 907 transitions. [2021-03-11 20:23:05,033 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7320419693301049 [2021-03-11 20:23:05,033 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 907 transitions. [2021-03-11 20:23:05,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 907 transitions. [2021-03-11 20:23:05,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:23:05,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 907 transitions. [2021-03-11 20:23:05,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 129.57142857142858) internal successors, (907), 7 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:05,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:05,041 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:05,041 INFO L185 Difference]: Start difference. First operand has 43 places, 28 transitions, 125 flow. Second operand 7 states and 907 transitions. [2021-03-11 20:23:05,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 47 transitions, 289 flow [2021-03-11 20:23:05,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 47 transitions, 283 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-11 20:23:05,045 INFO L241 Difference]: Finished difference. Result has 50 places, 33 transitions, 195 flow [2021-03-11 20:23:05,046 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=195, PETRI_PLACES=50, PETRI_TRANSITIONS=33} [2021-03-11 20:23:05,046 INFO L335 CegarLoopForPetriNet]: 34 programPoint places, 16 predicate places. [2021-03-11 20:23:05,046 INFO L480 AbstractCegarLoop]: Abstraction has has 50 places, 33 transitions, 195 flow [2021-03-11 20:23:05,047 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 125.83333333333333) internal successors, (755), 6 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:05,047 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:23:05,047 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:23:05,047 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 20:23:05,047 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:23:05,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:23:05,047 INFO L82 PathProgramCache]: Analyzing trace with hash -976998866, now seen corresponding path program 1 times [2021-03-11 20:23:05,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:23:05,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309958199] [2021-03-11 20:23:05,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:23:05,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:23:05,128 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.3 percent of original size [2021-03-11 20:23:05,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-11 20:23:05,153 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.5 percent of original size [2021-03-11 20:23:05,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 20:23:05,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:05,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 20:23:05,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:05,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:23:05,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:23:05,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309958199] [2021-03-11 20:23:05,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:23:05,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 20:23:05,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088991437] [2021-03-11 20:23:05,196 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 20:23:05,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:23:05,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 20:23:05,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-11 20:23:05,198 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 177 [2021-03-11 20:23:05,199 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 33 transitions, 195 flow. Second operand has 6 states, 6 states have (on average 125.83333333333333) internal successors, (755), 6 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:05,199 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:23:05,199 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 177 [2021-03-11 20:23:05,199 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:23:05,390 INFO L129 PetriNetUnfolder]: 200/418 cut-off events. [2021-03-11 20:23:05,391 INFO L130 PetriNetUnfolder]: For 2165/2573 co-relation queries the response was YES. [2021-03-11 20:23:05,392 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1695 conditions, 418 events. 200/418 cut-off events. For 2165/2573 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2157 event pairs, 73 based on Foata normal form. 42/441 useless extension candidates. Maximal degree in co-relation 1672. Up to 251 conditions per place. [2021-03-11 20:23:05,395 INFO L132 encePairwiseOnDemand]: 170/177 looper letters, 17 selfloop transitions, 9 changer transitions 10/52 dead transitions. [2021-03-11 20:23:05,395 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 52 transitions, 411 flow [2021-03-11 20:23:05,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 20:23:05,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 20:23:05,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 907 transitions. [2021-03-11 20:23:05,398 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7320419693301049 [2021-03-11 20:23:05,398 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 907 transitions. [2021-03-11 20:23:05,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 907 transitions. [2021-03-11 20:23:05,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:23:05,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 907 transitions. [2021-03-11 20:23:05,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 129.57142857142858) internal successors, (907), 7 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:05,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:05,403 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:05,403 INFO L185 Difference]: Start difference. First operand has 50 places, 33 transitions, 195 flow. Second operand 7 states and 907 transitions. [2021-03-11 20:23:05,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 52 transitions, 411 flow [2021-03-11 20:23:05,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 52 transitions, 383 flow, removed 14 selfloop flow, removed 2 redundant places. [2021-03-11 20:23:05,409 INFO L241 Difference]: Finished difference. Result has 55 places, 36 transitions, 236 flow [2021-03-11 20:23:05,409 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=236, PETRI_PLACES=55, PETRI_TRANSITIONS=36} [2021-03-11 20:23:05,409 INFO L335 CegarLoopForPetriNet]: 34 programPoint places, 21 predicate places. [2021-03-11 20:23:05,409 INFO L480 AbstractCegarLoop]: Abstraction has has 55 places, 36 transitions, 236 flow [2021-03-11 20:23:05,409 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 125.83333333333333) internal successors, (755), 6 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:05,409 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:23:05,410 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:23:05,410 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 20:23:05,410 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:23:05,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:23:05,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1690497094, now seen corresponding path program 1 times [2021-03-11 20:23:05,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:23:05,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990432736] [2021-03-11 20:23:05,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:23:05,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:23:05,532 INFO L142 QuantifierPusher]: treesize reduction 30, result has 30.2 percent of original size [2021-03-11 20:23:05,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 20:23:05,544 INFO L142 QuantifierPusher]: treesize reduction 60, result has 30.2 percent of original size [2021-03-11 20:23:05,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-11 20:23:05,568 INFO L142 QuantifierPusher]: treesize reduction 2, result has 97.3 percent of original size [2021-03-11 20:23:05,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-03-11 20:23:05,623 INFO L142 QuantifierPusher]: treesize reduction 2, result has 96.9 percent of original size [2021-03-11 20:23:05,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-03-11 20:23:05,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:05,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:23:05,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:23:05,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990432736] [2021-03-11 20:23:05,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:23:05,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 20:23:05,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694664668] [2021-03-11 20:23:05,675 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 20:23:05,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:23:05,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 20:23:05,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-11 20:23:05,677 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 177 [2021-03-11 20:23:05,677 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 36 transitions, 236 flow. Second operand has 7 states, 7 states have (on average 122.85714285714286) internal successors, (860), 7 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:05,678 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:23:05,678 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 177 [2021-03-11 20:23:05,678 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:23:06,077 INFO L129 PetriNetUnfolder]: 213/446 cut-off events. [2021-03-11 20:23:06,078 INFO L130 PetriNetUnfolder]: For 2894/3163 co-relation queries the response was YES. [2021-03-11 20:23:06,080 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2042 conditions, 446 events. 213/446 cut-off events. For 2894/3163 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2355 event pairs, 43 based on Foata normal form. 70/503 useless extension candidates. Maximal degree in co-relation 2015. Up to 255 conditions per place. [2021-03-11 20:23:06,083 INFO L132 encePairwiseOnDemand]: 169/177 looper letters, 21 selfloop transitions, 15 changer transitions 15/67 dead transitions. [2021-03-11 20:23:06,083 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 67 transitions, 592 flow [2021-03-11 20:23:06,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-11 20:23:06,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-11 20:23:06,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1265 transitions. [2021-03-11 20:23:06,087 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7146892655367232 [2021-03-11 20:23:06,087 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1265 transitions. [2021-03-11 20:23:06,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1265 transitions. [2021-03-11 20:23:06,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:23:06,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1265 transitions. [2021-03-11 20:23:06,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 126.5) internal successors, (1265), 10 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:06,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 177.0) internal successors, (1947), 11 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:06,096 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 177.0) internal successors, (1947), 11 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:06,096 INFO L185 Difference]: Start difference. First operand has 55 places, 36 transitions, 236 flow. Second operand 10 states and 1265 transitions. [2021-03-11 20:23:06,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 67 transitions, 592 flow [2021-03-11 20:23:06,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 67 transitions, 562 flow, removed 12 selfloop flow, removed 3 redundant places. [2021-03-11 20:23:06,102 INFO L241 Difference]: Finished difference. Result has 65 places, 46 transitions, 357 flow [2021-03-11 20:23:06,102 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=357, PETRI_PLACES=65, PETRI_TRANSITIONS=46} [2021-03-11 20:23:06,102 INFO L335 CegarLoopForPetriNet]: 34 programPoint places, 31 predicate places. [2021-03-11 20:23:06,102 INFO L480 AbstractCegarLoop]: Abstraction has has 65 places, 46 transitions, 357 flow [2021-03-11 20:23:06,103 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 122.85714285714286) internal successors, (860), 7 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:06,103 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:23:06,103 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:23:06,103 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 20:23:06,103 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:23:06,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:23:06,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1709514806, now seen corresponding path program 1 times [2021-03-11 20:23:06,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:23:06,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547507680] [2021-03-11 20:23:06,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:23:06,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:23:06,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:06,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 20:23:06,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:06,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-11 20:23:06,205 INFO L142 QuantifierPusher]: treesize reduction 63, result has 40.6 percent of original size [2021-03-11 20:23:06,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 20:23:06,228 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-03-11 20:23:06,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 20:23:06,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:06,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:23:06,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:23:06,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547507680] [2021-03-11 20:23:06,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:23:06,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 20:23:06,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592009878] [2021-03-11 20:23:06,267 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 20:23:06,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:23:06,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 20:23:06,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-11 20:23:06,269 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 177 [2021-03-11 20:23:06,270 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 46 transitions, 357 flow. Second operand has 7 states, 7 states have (on average 124.85714285714286) internal successors, (874), 7 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:06,270 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:23:06,270 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 177 [2021-03-11 20:23:06,270 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:23:06,488 INFO L129 PetriNetUnfolder]: 193/431 cut-off events. [2021-03-11 20:23:06,489 INFO L130 PetriNetUnfolder]: For 3874/4219 co-relation queries the response was YES. [2021-03-11 20:23:06,491 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2192 conditions, 431 events. 193/431 cut-off events. For 3874/4219 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2418 event pairs, 24 based on Foata normal form. 54/470 useless extension candidates. Maximal degree in co-relation 2159. Up to 259 conditions per place. [2021-03-11 20:23:06,493 INFO L132 encePairwiseOnDemand]: 171/177 looper letters, 27 selfloop transitions, 11 changer transitions 6/60 dead transitions. [2021-03-11 20:23:06,494 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 60 transitions, 614 flow [2021-03-11 20:23:06,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 20:23:06,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-11 20:23:06,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1023 transitions. [2021-03-11 20:23:06,497 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.722457627118644 [2021-03-11 20:23:06,497 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1023 transitions. [2021-03-11 20:23:06,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1023 transitions. [2021-03-11 20:23:06,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:23:06,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1023 transitions. [2021-03-11 20:23:06,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 127.875) internal successors, (1023), 8 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:06,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 177.0) internal successors, (1593), 9 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:06,503 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 177.0) internal successors, (1593), 9 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:06,504 INFO L185 Difference]: Start difference. First operand has 65 places, 46 transitions, 357 flow. Second operand 8 states and 1023 transitions. [2021-03-11 20:23:06,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 60 transitions, 614 flow [2021-03-11 20:23:06,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 60 transitions, 562 flow, removed 24 selfloop flow, removed 5 redundant places. [2021-03-11 20:23:06,517 INFO L241 Difference]: Finished difference. Result has 67 places, 48 transitions, 384 flow [2021-03-11 20:23:06,517 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=384, PETRI_PLACES=67, PETRI_TRANSITIONS=48} [2021-03-11 20:23:06,517 INFO L335 CegarLoopForPetriNet]: 34 programPoint places, 33 predicate places. [2021-03-11 20:23:06,517 INFO L480 AbstractCegarLoop]: Abstraction has has 67 places, 48 transitions, 384 flow [2021-03-11 20:23:06,518 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 124.85714285714286) internal successors, (874), 7 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:06,518 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:23:06,518 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:23:06,518 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 20:23:06,518 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:23:06,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:23:06,519 INFO L82 PathProgramCache]: Analyzing trace with hash 2014767427, now seen corresponding path program 1 times [2021-03-11 20:23:06,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:23:06,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625466744] [2021-03-11 20:23:06,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:23:06,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:23:06,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:06,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 20:23:06,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:06,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 20:23:06,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:06,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 20:23:06,598 INFO L142 QuantifierPusher]: treesize reduction 22, result has 65.6 percent of original size [2021-03-11 20:23:06,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-03-11 20:23:06,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:06,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:23:06,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:23:06,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625466744] [2021-03-11 20:23:06,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:23:06,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 20:23:06,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253491843] [2021-03-11 20:23:06,617 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 20:23:06,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:23:06,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 20:23:06,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-11 20:23:06,618 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 177 [2021-03-11 20:23:06,619 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 48 transitions, 384 flow. Second operand has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:06,619 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:23:06,619 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 177 [2021-03-11 20:23:06,619 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:23:06,789 INFO L129 PetriNetUnfolder]: 199/429 cut-off events. [2021-03-11 20:23:06,790 INFO L130 PetriNetUnfolder]: For 4060/4375 co-relation queries the response was YES. [2021-03-11 20:23:06,792 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2253 conditions, 429 events. 199/429 cut-off events. For 4060/4375 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2325 event pairs, 56 based on Foata normal form. 58/471 useless extension candidates. Maximal degree in co-relation 2219. Up to 265 conditions per place. [2021-03-11 20:23:06,794 INFO L132 encePairwiseOnDemand]: 170/177 looper letters, 30 selfloop transitions, 19 changer transitions 6/71 dead transitions. [2021-03-11 20:23:06,794 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 71 transitions, 733 flow [2021-03-11 20:23:06,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 20:23:06,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-11 20:23:06,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1040 transitions. [2021-03-11 20:23:06,797 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7344632768361582 [2021-03-11 20:23:06,797 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1040 transitions. [2021-03-11 20:23:06,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1040 transitions. [2021-03-11 20:23:06,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:23:06,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1040 transitions. [2021-03-11 20:23:06,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 130.0) internal successors, (1040), 8 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:06,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 177.0) internal successors, (1593), 9 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:06,802 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 177.0) internal successors, (1593), 9 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:06,802 INFO L185 Difference]: Start difference. First operand has 67 places, 48 transitions, 384 flow. Second operand 8 states and 1040 transitions. [2021-03-11 20:23:06,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 71 transitions, 733 flow [2021-03-11 20:23:06,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 71 transitions, 684 flow, removed 15 selfloop flow, removed 5 redundant places. [2021-03-11 20:23:06,810 INFO L241 Difference]: Finished difference. Result has 71 places, 59 transitions, 515 flow [2021-03-11 20:23:06,810 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=515, PETRI_PLACES=71, PETRI_TRANSITIONS=59} [2021-03-11 20:23:06,811 INFO L335 CegarLoopForPetriNet]: 34 programPoint places, 37 predicate places. [2021-03-11 20:23:06,811 INFO L480 AbstractCegarLoop]: Abstraction has has 71 places, 59 transitions, 515 flow [2021-03-11 20:23:06,811 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:06,811 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:23:06,811 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:23:06,811 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-11 20:23:06,811 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:23:06,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:23:06,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1715979453, now seen corresponding path program 2 times [2021-03-11 20:23:06,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:23:06,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379756363] [2021-03-11 20:23:06,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:23:06,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:23:06,877 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.7 percent of original size [2021-03-11 20:23:06,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-03-11 20:23:06,908 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.8 percent of original size [2021-03-11 20:23:06,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 20:23:06,948 INFO L142 QuantifierPusher]: treesize reduction 37, result has 53.8 percent of original size [2021-03-11 20:23:06,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 20:23:06,981 INFO L142 QuantifierPusher]: treesize reduction 35, result has 18.6 percent of original size [2021-03-11 20:23:06,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-11 20:23:06,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:06,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:23:06,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:23:06,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379756363] [2021-03-11 20:23:06,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:23:06,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 20:23:06,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828044441] [2021-03-11 20:23:06,998 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 20:23:06,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:23:06,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 20:23:07,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-11 20:23:07,002 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 177 [2021-03-11 20:23:07,002 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 59 transitions, 515 flow. Second operand has 7 states, 7 states have (on average 123.85714285714286) internal successors, (867), 7 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:07,002 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:23:07,003 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 177 [2021-03-11 20:23:07,003 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:23:07,226 INFO L129 PetriNetUnfolder]: 194/422 cut-off events. [2021-03-11 20:23:07,226 INFO L130 PetriNetUnfolder]: For 4083/4435 co-relation queries the response was YES. [2021-03-11 20:23:07,229 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2336 conditions, 422 events. 194/422 cut-off events. For 4083/4435 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2301 event pairs, 56 based on Foata normal form. 52/457 useless extension candidates. Maximal degree in co-relation 2300. Up to 261 conditions per place. [2021-03-11 20:23:07,231 INFO L132 encePairwiseOnDemand]: 170/177 looper letters, 27 selfloop transitions, 19 changer transitions 5/67 dead transitions. [2021-03-11 20:23:07,231 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 67 transitions, 712 flow [2021-03-11 20:23:07,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 20:23:07,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-11 20:23:07,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 762 transitions. [2021-03-11 20:23:07,233 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7175141242937854 [2021-03-11 20:23:07,233 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 762 transitions. [2021-03-11 20:23:07,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 762 transitions. [2021-03-11 20:23:07,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:23:07,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 762 transitions. [2021-03-11 20:23:07,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:07,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 177.0) internal successors, (1239), 7 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:07,237 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 177.0) internal successors, (1239), 7 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:07,237 INFO L185 Difference]: Start difference. First operand has 71 places, 59 transitions, 515 flow. Second operand 6 states and 762 transitions. [2021-03-11 20:23:07,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 67 transitions, 712 flow [2021-03-11 20:23:07,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 67 transitions, 675 flow, removed 13 selfloop flow, removed 4 redundant places. [2021-03-11 20:23:07,245 INFO L241 Difference]: Finished difference. Result has 72 places, 59 transitions, 548 flow [2021-03-11 20:23:07,246 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=548, PETRI_PLACES=72, PETRI_TRANSITIONS=59} [2021-03-11 20:23:07,247 INFO L335 CegarLoopForPetriNet]: 34 programPoint places, 38 predicate places. [2021-03-11 20:23:07,247 INFO L480 AbstractCegarLoop]: Abstraction has has 72 places, 59 transitions, 548 flow [2021-03-11 20:23:07,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 123.85714285714286) internal successors, (867), 7 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:07,248 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:23:07,248 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:23:07,248 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-11 20:23:07,248 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:23:07,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:23:07,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1393151412, now seen corresponding path program 1 times [2021-03-11 20:23:07,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:23:07,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111511088] [2021-03-11 20:23:07,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:23:07,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:23:07,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:07,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:23:07,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:07,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 20:23:07,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:07,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:23:07,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:23:07,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111511088] [2021-03-11 20:23:07,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:23:07,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:23:07,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979039986] [2021-03-11 20:23:07,316 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:23:07,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:23:07,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:23:07,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:23:07,317 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 177 [2021-03-11 20:23:07,317 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 59 transitions, 548 flow. Second operand has 4 states, 4 states have (on average 145.75) internal successors, (583), 4 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:07,317 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:23:07,317 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 177 [2021-03-11 20:23:07,317 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:23:07,415 INFO L129 PetriNetUnfolder]: 260/606 cut-off events. [2021-03-11 20:23:07,416 INFO L130 PetriNetUnfolder]: For 4843/5028 co-relation queries the response was YES. [2021-03-11 20:23:07,419 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2550 conditions, 606 events. 260/606 cut-off events. For 4843/5028 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 3898 event pairs, 89 based on Foata normal form. 110/681 useless extension candidates. Maximal degree in co-relation 2513. Up to 271 conditions per place. [2021-03-11 20:23:07,422 INFO L132 encePairwiseOnDemand]: 171/177 looper letters, 10 selfloop transitions, 8 changer transitions 0/66 dead transitions. [2021-03-11 20:23:07,422 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 66 transitions, 556 flow [2021-03-11 20:23:07,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:23:07,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:23:07,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 743 transitions. [2021-03-11 20:23:07,424 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8395480225988701 [2021-03-11 20:23:07,424 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 743 transitions. [2021-03-11 20:23:07,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 743 transitions. [2021-03-11 20:23:07,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:23:07,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 743 transitions. [2021-03-11 20:23:07,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.6) internal successors, (743), 5 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:07,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:07,428 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:07,428 INFO L185 Difference]: Start difference. First operand has 72 places, 59 transitions, 548 flow. Second operand 5 states and 743 transitions. [2021-03-11 20:23:07,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 66 transitions, 556 flow [2021-03-11 20:23:07,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 66 transitions, 508 flow, removed 8 selfloop flow, removed 5 redundant places. [2021-03-11 20:23:07,437 INFO L241 Difference]: Finished difference. Result has 72 places, 63 transitions, 520 flow [2021-03-11 20:23:07,437 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=520, PETRI_PLACES=72, PETRI_TRANSITIONS=63} [2021-03-11 20:23:07,438 INFO L335 CegarLoopForPetriNet]: 34 programPoint places, 38 predicate places. [2021-03-11 20:23:07,438 INFO L480 AbstractCegarLoop]: Abstraction has has 72 places, 63 transitions, 520 flow [2021-03-11 20:23:07,438 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 145.75) internal successors, (583), 4 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:07,438 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:23:07,438 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:23:07,438 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-11 20:23:07,438 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:23:07,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:23:07,439 INFO L82 PathProgramCache]: Analyzing trace with hash 17281906, now seen corresponding path program 1 times [2021-03-11 20:23:07,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:23:07,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107993129] [2021-03-11 20:23:07,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:23:07,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:23:07,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:07,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:23:07,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:07,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:23:07,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:07,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 20:23:07,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:07,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:23:07,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:23:07,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107993129] [2021-03-11 20:23:07,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:23:07,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 20:23:07,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369431606] [2021-03-11 20:23:07,509 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:23:07,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:23:07,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:23:07,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:23:07,510 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 177 [2021-03-11 20:23:07,511 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 63 transitions, 520 flow. Second operand has 5 states, 5 states have (on average 145.8) internal successors, (729), 5 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:07,511 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:23:07,511 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 177 [2021-03-11 20:23:07,511 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:23:07,613 INFO L129 PetriNetUnfolder]: 137/414 cut-off events. [2021-03-11 20:23:07,613 INFO L130 PetriNetUnfolder]: For 2409/3044 co-relation queries the response was YES. [2021-03-11 20:23:07,616 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1877 conditions, 414 events. 137/414 cut-off events. For 2409/3044 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 2722 event pairs, 16 based on Foata normal form. 281/671 useless extension candidates. Maximal degree in co-relation 1839. Up to 213 conditions per place. [2021-03-11 20:23:07,618 INFO L132 encePairwiseOnDemand]: 171/177 looper letters, 5 selfloop transitions, 15 changer transitions 3/67 dead transitions. [2021-03-11 20:23:07,618 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 67 transitions, 564 flow [2021-03-11 20:23:07,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 20:23:07,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 20:23:07,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1040 transitions. [2021-03-11 20:23:07,621 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8393866020984665 [2021-03-11 20:23:07,621 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1040 transitions. [2021-03-11 20:23:07,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1040 transitions. [2021-03-11 20:23:07,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:23:07,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1040 transitions. [2021-03-11 20:23:07,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 148.57142857142858) internal successors, (1040), 7 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:07,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:07,626 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:07,626 INFO L185 Difference]: Start difference. First operand has 72 places, 63 transitions, 520 flow. Second operand 7 states and 1040 transitions. [2021-03-11 20:23:07,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 67 transitions, 564 flow [2021-03-11 20:23:07,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 67 transitions, 531 flow, removed 2 selfloop flow, removed 5 redundant places. [2021-03-11 20:23:07,632 INFO L241 Difference]: Finished difference. Result has 76 places, 64 transitions, 526 flow [2021-03-11 20:23:07,633 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=526, PETRI_PLACES=76, PETRI_TRANSITIONS=64} [2021-03-11 20:23:07,633 INFO L335 CegarLoopForPetriNet]: 34 programPoint places, 42 predicate places. [2021-03-11 20:23:07,633 INFO L480 AbstractCegarLoop]: Abstraction has has 76 places, 64 transitions, 526 flow [2021-03-11 20:23:07,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 145.8) internal successors, (729), 5 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:07,633 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:23:07,633 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:23:07,633 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-11 20:23:07,634 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:23:07,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:23:07,634 INFO L82 PathProgramCache]: Analyzing trace with hash 521419489, now seen corresponding path program 1 times [2021-03-11 20:23:07,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:23:07,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555429562] [2021-03-11 20:23:07,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:23:07,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:23:07,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:07,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:23:07,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:07,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:23:07,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:07,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:23:07,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:07,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 20:23:07,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:07,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:23:07,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:23:07,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555429562] [2021-03-11 20:23:07,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:23:07,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 20:23:07,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957144814] [2021-03-11 20:23:07,727 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 20:23:07,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:23:07,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 20:23:07,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-11 20:23:07,729 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 177 [2021-03-11 20:23:07,729 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 64 transitions, 526 flow. Second operand has 6 states, 6 states have (on average 145.83333333333334) internal successors, (875), 6 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:07,730 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:23:07,730 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 177 [2021-03-11 20:23:07,730 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:23:07,834 INFO L129 PetriNetUnfolder]: 109/351 cut-off events. [2021-03-11 20:23:07,835 INFO L130 PetriNetUnfolder]: For 2229/2949 co-relation queries the response was YES. [2021-03-11 20:23:07,837 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1799 conditions, 351 events. 109/351 cut-off events. For 2229/2949 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 2337 event pairs, 4 based on Foata normal form. 269/598 useless extension candidates. Maximal degree in co-relation 1761. Up to 195 conditions per place. [2021-03-11 20:23:07,838 INFO L132 encePairwiseOnDemand]: 171/177 looper letters, 2 selfloop transitions, 19 changer transitions 3/68 dead transitions. [2021-03-11 20:23:07,839 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 68 transitions, 604 flow [2021-03-11 20:23:07,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 20:23:07,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 20:23:07,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1331 transitions. [2021-03-11 20:23:07,842 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8355304456999372 [2021-03-11 20:23:07,842 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1331 transitions. [2021-03-11 20:23:07,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1331 transitions. [2021-03-11 20:23:07,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:23:07,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1331 transitions. [2021-03-11 20:23:07,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 147.88888888888889) internal successors, (1331), 9 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:07,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 177.0) internal successors, (1770), 10 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:07,860 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 177.0) internal successors, (1770), 10 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:07,861 INFO L185 Difference]: Start difference. First operand has 76 places, 64 transitions, 526 flow. Second operand 9 states and 1331 transitions. [2021-03-11 20:23:07,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 68 transitions, 604 flow [2021-03-11 20:23:07,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 68 transitions, 521 flow, removed 29 selfloop flow, removed 6 redundant places. [2021-03-11 20:23:07,869 INFO L241 Difference]: Finished difference. Result has 81 places, 65 transitions, 504 flow [2021-03-11 20:23:07,869 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=504, PETRI_PLACES=81, PETRI_TRANSITIONS=65} [2021-03-11 20:23:07,869 INFO L335 CegarLoopForPetriNet]: 34 programPoint places, 47 predicate places. [2021-03-11 20:23:07,869 INFO L480 AbstractCegarLoop]: Abstraction has has 81 places, 65 transitions, 504 flow [2021-03-11 20:23:07,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 145.83333333333334) internal successors, (875), 6 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:07,870 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:23:07,870 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:23:07,870 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-11 20:23:07,870 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:23:07,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:23:07,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1052472326, now seen corresponding path program 1 times [2021-03-11 20:23:07,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:23:07,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593566293] [2021-03-11 20:23:07,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:23:07,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:23:07,979 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.5 percent of original size [2021-03-11 20:23:07,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 20:23:08,004 INFO L142 QuantifierPusher]: treesize reduction 21, result has 76.7 percent of original size [2021-03-11 20:23:08,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-03-11 20:23:08,057 INFO L142 QuantifierPusher]: treesize reduction 16, result has 75.4 percent of original size [2021-03-11 20:23:08,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 20:23:08,102 INFO L142 QuantifierPusher]: treesize reduction 16, result has 76.8 percent of original size [2021-03-11 20:23:08,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-11 20:23:08,153 INFO L142 QuantifierPusher]: treesize reduction 16, result has 75.8 percent of original size [2021-03-11 20:23:08,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-03-11 20:23:08,202 INFO L142 QuantifierPusher]: treesize reduction 37, result has 72.0 percent of original size [2021-03-11 20:23:08,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-03-11 20:23:08,259 INFO L142 QuantifierPusher]: treesize reduction 16, result has 72.4 percent of original size [2021-03-11 20:23:08,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-03-11 20:23:08,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:08,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:23:08,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:23:08,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593566293] [2021-03-11 20:23:08,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:23:08,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 20:23:08,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897050471] [2021-03-11 20:23:08,306 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-11 20:23:08,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:23:08,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-11 20:23:08,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-03-11 20:23:08,307 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 177 [2021-03-11 20:23:08,308 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 65 transitions, 504 flow. Second operand has 10 states, 10 states have (on average 123.9) internal successors, (1239), 10 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:08,308 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:23:08,308 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 177 [2021-03-11 20:23:08,308 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:23:08,537 INFO L129 PetriNetUnfolder]: 130/434 cut-off events. [2021-03-11 20:23:08,537 INFO L130 PetriNetUnfolder]: For 2792/3158 co-relation queries the response was YES. [2021-03-11 20:23:08,540 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2044 conditions, 434 events. 130/434 cut-off events. For 2792/3158 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 3230 event pairs, 0 based on Foata normal form. 90/497 useless extension candidates. Maximal degree in co-relation 2006. Up to 120 conditions per place. [2021-03-11 20:23:08,542 INFO L132 encePairwiseOnDemand]: 171/177 looper letters, 22 selfloop transitions, 10 changer transitions 8/71 dead transitions. [2021-03-11 20:23:08,542 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 71 transitions, 662 flow [2021-03-11 20:23:08,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 20:23:08,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 20:23:08,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 881 transitions. [2021-03-11 20:23:08,545 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7110573042776432 [2021-03-11 20:23:08,545 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 881 transitions. [2021-03-11 20:23:08,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 881 transitions. [2021-03-11 20:23:08,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:23:08,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 881 transitions. [2021-03-11 20:23:08,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 125.85714285714286) internal successors, (881), 7 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:08,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:08,549 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:08,549 INFO L185 Difference]: Start difference. First operand has 81 places, 65 transitions, 504 flow. Second operand 7 states and 881 transitions. [2021-03-11 20:23:08,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 71 transitions, 662 flow [2021-03-11 20:23:08,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 71 transitions, 566 flow, removed 31 selfloop flow, removed 11 redundant places. [2021-03-11 20:23:08,559 INFO L241 Difference]: Finished difference. Result has 77 places, 61 transitions, 422 flow [2021-03-11 20:23:08,560 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=422, PETRI_PLACES=77, PETRI_TRANSITIONS=61} [2021-03-11 20:23:08,560 INFO L335 CegarLoopForPetriNet]: 34 programPoint places, 43 predicate places. [2021-03-11 20:23:08,560 INFO L480 AbstractCegarLoop]: Abstraction has has 77 places, 61 transitions, 422 flow [2021-03-11 20:23:08,560 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 123.9) internal successors, (1239), 10 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:23:08,560 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:23:08,560 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:23:08,560 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-11 20:23:08,561 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:23:08,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:23:08,561 INFO L82 PathProgramCache]: Analyzing trace with hash 52192292, now seen corresponding path program 2 times [2021-03-11 20:23:08,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:23:08,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624997001] [2021-03-11 20:23:08,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:23:08,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-11 20:23:08,642 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-11 20:23:08,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-11 20:23:08,694 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-11 20:23:08,735 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-11 20:23:08,737 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-03-11 20:23:08,738 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-11 20:23:08,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 08:23:08 BasicIcfg [2021-03-11 20:23:08,819 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 20:23:08,822 INFO L168 Benchmark]: Toolchain (without parser) took 16888.06 ms. Allocated memory was 255.9 MB in the beginning and 635.4 MB in the end (delta: 379.6 MB). Free memory was 233.2 MB in the beginning and 568.7 MB in the end (delta: -335.5 MB). Peak memory consumption was 43.6 MB. Max. memory is 16.0 GB. [2021-03-11 20:23:08,826 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory was 237.6 MB in the beginning and 237.5 MB in the end (delta: 160.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 20:23:08,826 INFO L168 Benchmark]: CACSL2BoogieTranslator took 524.73 ms. Allocated memory was 255.9 MB in the beginning and 367.0 MB in the end (delta: 111.1 MB). Free memory was 232.6 MB in the beginning and 326.9 MB in the end (delta: -94.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-03-11 20:23:08,829 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.28 ms. Allocated memory is still 367.0 MB. Free memory was 326.9 MB in the beginning and 323.7 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2021-03-11 20:23:08,829 INFO L168 Benchmark]: Boogie Preprocessor took 41.54 ms. Allocated memory is still 367.0 MB. Free memory was 323.7 MB in the beginning and 321.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 20:23:08,829 INFO L168 Benchmark]: RCFGBuilder took 1908.80 ms. Allocated memory was 367.0 MB in the beginning and 440.4 MB in the end (delta: 73.4 MB). Free memory was 321.6 MB in the beginning and 406.9 MB in the end (delta: -85.4 MB). Peak memory consumption was 62.4 MB. Max. memory is 16.0 GB. [2021-03-11 20:23:08,829 INFO L168 Benchmark]: TraceAbstraction took 14322.03 ms. Allocated memory was 440.4 MB in the beginning and 635.4 MB in the end (delta: 195.0 MB). Free memory was 406.9 MB in the beginning and 568.7 MB in the end (delta: -161.8 MB). Peak memory consumption was 34.3 MB. Max. memory is 16.0 GB. [2021-03-11 20:23:08,830 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory was 237.6 MB in the beginning and 237.5 MB in the end (delta: 160.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 524.73 ms. Allocated memory was 255.9 MB in the beginning and 367.0 MB in the end (delta: 111.1 MB). Free memory was 232.6 MB in the beginning and 326.9 MB in the end (delta: -94.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 80.28 ms. Allocated memory is still 367.0 MB. Free memory was 326.9 MB in the beginning and 323.7 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 41.54 ms. Allocated memory is still 367.0 MB. Free memory was 323.7 MB in the beginning and 321.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 1908.80 ms. Allocated memory was 367.0 MB in the beginning and 440.4 MB in the end (delta: 73.4 MB). Free memory was 321.6 MB in the beginning and 406.9 MB in the end (delta: -85.4 MB). Peak memory consumption was 62.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 14322.03 ms. Allocated memory was 440.4 MB in the beginning and 635.4 MB in the end (delta: 195.0 MB). Free memory was 406.9 MB in the beginning and 568.7 MB in the end (delta: -161.8 MB). Peak memory consumption was 34.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8548.6ms, 102 PlacesBefore, 34 PlacesAfterwards, 94 TransitionsBefore, 25 TransitionsAfterwards, 1694 CoEnabledTransitionPairs, 7 FixpointIterations, 35 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 80 TotalNumberOfCompositions, 4744 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2270, positive: 2101, positive conditional: 0, positive unconditional: 2101, negative: 169, negative conditional: 0, negative unconditional: 169, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1169, positive: 1129, positive conditional: 0, positive unconditional: 1129, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1169, positive: 1107, positive conditional: 0, positive unconditional: 1107, negative: 62, negative conditional: 0, negative unconditional: 62, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 62, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 653, positive: 56, positive conditional: 0, positive unconditional: 56, negative: 597, negative conditional: 0, negative unconditional: 597, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2270, positive: 972, positive conditional: 0, positive unconditional: 972, negative: 129, negative conditional: 0, negative unconditional: 129, unknown: 1169, unknown conditional: 0, unknown unconditional: 1169] , Statistics on independence cache: Total cache size (in pairs): 167, Positive cache size: 150, Positive conditional cache size: 0, Positive unconditional cache size: 150, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p2_EAX = 0; [L712] 0 _Bool main$tmp_guard0; [L713] 0 _Bool main$tmp_guard1; [L715] 0 int x = 0; [L717] 0 int y = 0; [L719] 0 int z = 0; [L720] 0 _Bool z$flush_delayed; [L721] 0 int z$mem_tmp; [L722] 0 _Bool z$r_buff0_thd0; [L723] 0 _Bool z$r_buff0_thd1; [L724] 0 _Bool z$r_buff0_thd2; [L725] 0 _Bool z$r_buff0_thd3; [L726] 0 _Bool z$r_buff1_thd0; [L727] 0 _Bool z$r_buff1_thd1; [L728] 0 _Bool z$r_buff1_thd2; [L729] 0 _Bool z$r_buff1_thd3; [L730] 0 _Bool z$read_delayed; [L731] 0 int *z$read_delayed_var; [L732] 0 int z$w_buff0; [L733] 0 _Bool z$w_buff0_used; [L734] 0 int z$w_buff1; [L735] 0 _Bool z$w_buff1_used; [L736] 0 _Bool weak$$choice0; [L737] 0 _Bool weak$$choice2; [L818] 0 pthread_t t2040; [L819] FCALL, FORK 0 pthread_create(&t2040, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L741] 1 z$w_buff1 = z$w_buff0 [L742] 1 z$w_buff0 = 2 [L743] 1 z$w_buff1_used = z$w_buff0_used [L744] 1 z$w_buff0_used = (_Bool)1 [L18] COND FALSE 1 !(!expression) [L746] 1 z$r_buff1_thd0 = z$r_buff0_thd0 [L747] 1 z$r_buff1_thd1 = z$r_buff0_thd1 [L748] 1 z$r_buff1_thd2 = z$r_buff0_thd2 [L749] 1 z$r_buff1_thd3 = z$r_buff0_thd3 [L750] 1 z$r_buff0_thd1 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=1, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L753] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=1, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L820] 0 pthread_t t2041; [L821] FCALL, FORK 0 pthread_create(&t2041, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=1, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L770] 2 x = 2 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=1, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L773] 2 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=1, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L822] 0 pthread_t t2042; [L823] FCALL, FORK 0 pthread_create(&t2042, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=1, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L790] 3 __unbuffered_p2_EAX = y VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=1, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L776] EXPR 2 z$w_buff0_used && z$r_buff0_thd2 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd2 ? z$w_buff1 : z) [L776] EXPR 2 z$w_buff1_used && z$r_buff1_thd2 ? z$w_buff1 : z [L776] EXPR 2 z$w_buff0_used && z$r_buff0_thd2 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd2 ? z$w_buff1 : z) [L776] 2 z = z$w_buff0_used && z$r_buff0_thd2 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd2 ? z$w_buff1 : z) [L777] EXPR 2 z$w_buff0_used && z$r_buff0_thd2 ? (_Bool)0 : z$w_buff0_used [L777] 2 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd2 ? (_Bool)0 : z$w_buff0_used [L778] EXPR 2 z$w_buff0_used && z$r_buff0_thd2 || z$w_buff1_used && z$r_buff1_thd2 ? (_Bool)0 : z$w_buff1_used [L778] 2 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd2 || z$w_buff1_used && z$r_buff1_thd2 ? (_Bool)0 : z$w_buff1_used [L779] EXPR 2 z$w_buff0_used && z$r_buff0_thd2 ? (_Bool)0 : z$r_buff0_thd2 [L779] 2 z$r_buff0_thd2 = z$w_buff0_used && z$r_buff0_thd2 ? (_Bool)0 : z$r_buff0_thd2 [L780] EXPR 2 z$w_buff0_used && z$r_buff0_thd2 || z$w_buff1_used && z$r_buff1_thd2 ? (_Bool)0 : z$r_buff1_thd2 [L780] 2 z$r_buff1_thd2 = z$w_buff0_used && z$r_buff0_thd2 || z$w_buff1_used && z$r_buff1_thd2 ? (_Bool)0 : z$r_buff1_thd2 [L793] 3 z = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, z=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=1, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L796] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z) [L796] EXPR 3 z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z [L796] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z) [L796] 3 z = z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z) [L797] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$w_buff0_used [L797] 3 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$w_buff0_used [L798] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$w_buff1_used [L798] 3 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$w_buff1_used [L799] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$r_buff0_thd3 [L799] 3 z$r_buff0_thd3 = z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$r_buff0_thd3 [L800] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$r_buff1_thd3 [L800] 3 z$r_buff1_thd3 = z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$r_buff1_thd3 [L756] EXPR 1 z$w_buff0_used && z$r_buff0_thd1 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd1 ? z$w_buff1 : z) [L756] 1 z = z$w_buff0_used && z$r_buff0_thd1 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd1 ? z$w_buff1 : z) [L757] EXPR 1 z$w_buff0_used && z$r_buff0_thd1 ? (_Bool)0 : z$w_buff0_used [L757] 1 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd1 ? (_Bool)0 : z$w_buff0_used [L758] EXPR 1 z$w_buff0_used && z$r_buff0_thd1 || z$w_buff1_used && z$r_buff1_thd1 ? (_Bool)0 : z$w_buff1_used [L758] 1 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd1 || z$w_buff1_used && z$r_buff1_thd1 ? (_Bool)0 : z$w_buff1_used [L759] EXPR 1 z$w_buff0_used && z$r_buff0_thd1 ? (_Bool)0 : z$r_buff0_thd1 [L759] 1 z$r_buff0_thd1 = z$w_buff0_used && z$r_buff0_thd1 ? (_Bool)0 : z$r_buff0_thd1 [L760] EXPR 1 z$w_buff0_used && z$r_buff0_thd1 || z$w_buff1_used && z$r_buff1_thd1 ? (_Bool)0 : z$r_buff1_thd1 [L760] 1 z$r_buff1_thd1 = z$w_buff0_used && z$r_buff0_thd1 || z$w_buff1_used && z$r_buff1_thd1 ? (_Bool)0 : z$r_buff1_thd1 [L763] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L765] 1 return 0; [L783] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L785] 2 return 0; [L803] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L805] 3 return 0; [L825] 0 main$tmp_guard0 = __unbuffered_cnt == 3 [L3] COND FALSE 0 !(!cond) [L829] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z) [L829] EXPR 0 z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z [L829] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z) [L829] 0 z = z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z) [L830] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used [L830] 0 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used [L831] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$w_buff1_used [L831] 0 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$w_buff1_used [L832] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0 [L832] 0 z$r_buff0_thd0 = z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0 [L833] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$r_buff1_thd0 [L833] 0 z$r_buff1_thd0 = z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$r_buff1_thd0 [L836] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L837] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L838] 0 z$flush_delayed = weak$$choice2 [L839] 0 z$mem_tmp = z [L840] EXPR 0 !z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff1) [L840] 0 z = !z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff1) [L841] EXPR 0 weak$$choice2 ? z$w_buff0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff0)) [L841] 0 z$w_buff0 = weak$$choice2 ? z$w_buff0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff0)) [L842] EXPR 0 weak$$choice2 ? z$w_buff1 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff1 : z$w_buff1)) [L842] 0 z$w_buff1 = weak$$choice2 ? z$w_buff1 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff1 : z$w_buff1)) [L843] EXPR 0 weak$$choice2 ? z$w_buff0_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used)) [L843] 0 z$w_buff0_used = weak$$choice2 ? z$w_buff0_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used)) [L844] EXPR 0 weak$$choice2 ? z$w_buff1_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L844] 0 z$w_buff1_used = weak$$choice2 ? z$w_buff1_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L845] EXPR 0 weak$$choice2 ? z$r_buff0_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff0_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0)) [L845] 0 z$r_buff0_thd0 = weak$$choice2 ? z$r_buff0_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff0_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0)) [L846] EXPR 0 weak$$choice2 ? z$r_buff1_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff1_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L846] 0 z$r_buff1_thd0 = weak$$choice2 ? z$r_buff1_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff1_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L847] 0 main$tmp_guard1 = !(x == 2 && z == 2 && __unbuffered_p2_EAX == 1) [L848] EXPR 0 z$flush_delayed ? z$mem_tmp : z [L848] 0 z = z$flush_delayed ? z$mem_tmp : z [L849] 0 z$flush_delayed = (_Bool)0 [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\result={0:0}, \result={0:0}, __unbuffered_cnt=3, __unbuffered_p2_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=52, weak$$choice2=255, x=2, y=1, z=2, z$flush_delayed=0, z$mem_tmp=2, z$r_buff0_thd0=0, z$r_buff0_thd1=1, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 96 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 1.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 14114.3ms, OverallIterations: 16, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 2692.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8644.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 92 SDtfs, 66 SDslu, 98 SDs, 0 SdLazy, 600 SolverSat, 158 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 822.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 91 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1249.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=548occurred in iteration=11, InterpolantAutomatonStates: 98, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 77.8ms SsaConstructionTime, 676.2ms SatisfiabilityAnalysisTime, 1689.5ms InterpolantComputationTime, 233 NumberOfCodeBlocks, 233 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 196 ConstructedInterpolants, 0 QuantifiedInterpolants, 2428 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...