/usr/bin/java -Xmx8000000000 -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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/thin002_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-13 07:37:36,728 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-13 07:37:36,729 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-13 07:37:36,763 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-13 07:37:36,781 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-13 07:37:36,783 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-13 07:37:36,784 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-13 07:37:36,785 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-13 07:37:36,788 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-13 07:37:36,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-13 07:37:36,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-13 07:37:36,794 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-13 07:37:36,794 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-13 07:37:36,796 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-13 07:37:36,796 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-13 07:37:36,798 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-13 07:37:36,801 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-13 07:37:36,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-13 07:37:36,809 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-13 07:37:36,810 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-13 07:37:36,811 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-NoLbe.epf [2021-06-13 07:37:36,838 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-13 07:37:36,838 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-13 07:37:36,840 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-13 07:37:36,841 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-13 07:37:36,841 INFO L138 SettingsManager]: * Use SBE=true [2021-06-13 07:37:36,841 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-13 07:37:36,841 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-13 07:37:36,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-13 07:37:36,841 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-13 07:37:36,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-13 07:37:36,842 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-13 07:37:36,842 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-13 07:37:36,842 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-13 07:37:36,842 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-13 07:37:36,842 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-13 07:37:36,842 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-13 07:37:36,842 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-13 07:37:36,843 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-13 07:37:36,843 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-13 07:37:36,843 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-13 07:37:36,843 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-13 07:37:36,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 07:37:36,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-13 07:37:36,843 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-13 07:37:36,843 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-13 07:37:36,843 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-13 07:37:36,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-13 07:37:36,844 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-13 07:37:36,844 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-13 07:37:36,844 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-13 07:37:37,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-13 07:37:37,143 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-13 07:37:37,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-13 07:37:37,145 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-13 07:37:37,146 INFO L275 PluginConnector]: CDTParser initialized [2021-06-13 07:37:37,146 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_tso.opt.i [2021-06-13 07:37:37,190 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bfa5c406/34a210497dee47a69149bc0baeb0b8c1/FLAGdbc4be095 [2021-06-13 07:37:37,628 INFO L306 CDTParser]: Found 1 translation units. [2021-06-13 07:37:37,628 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_tso.opt.i [2021-06-13 07:37:37,649 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bfa5c406/34a210497dee47a69149bc0baeb0b8c1/FLAGdbc4be095 [2021-06-13 07:37:37,986 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bfa5c406/34a210497dee47a69149bc0baeb0b8c1 [2021-06-13 07:37:37,988 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-13 07:37:37,990 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-13 07:37:37,993 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-13 07:37:37,993 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-13 07:37:37,995 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-13 07:37:37,996 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 07:37:37" (1/1) ... [2021-06-13 07:37:37,997 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d693c67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:37:37, skipping insertion in model container [2021-06-13 07:37:37,998 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 07:37:37" (1/1) ... [2021-06-13 07:37:38,002 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-13 07:37:38,034 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-13 07:37:38,155 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_tso.opt.i[949,962] [2021-06-13 07:37:38,253 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 07:37:38,258 INFO L203 MainTranslator]: Completed pre-run [2021-06-13 07:37:38,265 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_tso.opt.i[949,962] [2021-06-13 07:37:38,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 07:37:38,354 INFO L208 MainTranslator]: Completed translation [2021-06-13 07:37:38,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:37:38 WrapperNode [2021-06-13 07:37:38,355 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-13 07:37:38,355 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-13 07:37:38,355 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-13 07:37:38,355 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-13 07:37:38,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:37:38" (1/1) ... [2021-06-13 07:37:38,369 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:37:38" (1/1) ... [2021-06-13 07:37:38,381 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-13 07:37:38,382 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-13 07:37:38,382 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-13 07:37:38,382 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-13 07:37:38,387 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:37:38" (1/1) ... [2021-06-13 07:37:38,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:37:38" (1/1) ... [2021-06-13 07:37:38,389 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:37:38" (1/1) ... [2021-06-13 07:37:38,389 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:37:38" (1/1) ... [2021-06-13 07:37:38,393 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:37:38" (1/1) ... [2021-06-13 07:37:38,394 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:37:38" (1/1) ... [2021-06-13 07:37:38,395 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:37:38" (1/1) ... [2021-06-13 07:37:38,397 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-13 07:37:38,397 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-13 07:37:38,397 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-13 07:37:38,398 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-13 07:37:38,398 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:37:38" (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 [2021-06-13 07:37:38,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-13 07:37:38,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-13 07:37:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-13 07:37:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-13 07:37:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-13 07:37:38,488 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-13 07:37:38,488 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-13 07:37:38,488 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-13 07:37:38,488 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-13 07:37:38,488 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-13 07:37:38,488 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-06-13 07:37:38,488 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-06-13 07:37:38,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-13 07:37:38,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-13 07:37:38,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-13 07:37:38,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-13 07:37:38,490 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-13 07:37:38,820 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-13 07:37:38,820 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-13 07:37:38,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 07:37:38 BoogieIcfgContainer [2021-06-13 07:37:38,821 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-13 07:37:38,822 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-13 07:37:38,823 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-13 07:37:38,824 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-13 07:37:38,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.06 07:37:37" (1/3) ... [2021-06-13 07:37:38,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e9d29e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 07:37:38, skipping insertion in model container [2021-06-13 07:37:38,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:37:38" (2/3) ... [2021-06-13 07:37:38,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e9d29e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 07:37:38, skipping insertion in model container [2021-06-13 07:37:38,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 07:37:38" (3/3) ... [2021-06-13 07:37:38,826 INFO L111 eAbstractionObserver]: Analyzing ICFG thin002_tso.opt.i [2021-06-13 07:37:38,830 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-13 07:37:38,831 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-13 07:37:38,831 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-13 07:37:38,852 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,852 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,852 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,852 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,853 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,853 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,853 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,853 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,853 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,853 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,853 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,853 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,854 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,854 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,854 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,854 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,854 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,854 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,854 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,854 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,855 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,855 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,855 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,855 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,855 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,855 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,855 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,855 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,856 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,856 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,856 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,856 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,856 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,856 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,856 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,856 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,857 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,857 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,857 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,857 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,857 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,857 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,857 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,857 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,858 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,858 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,858 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,858 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,859 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,859 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,860 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,860 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,863 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,863 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,863 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,863 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,864 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,864 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,864 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,864 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,866 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,866 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,866 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,866 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:38,867 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-13 07:37:38,882 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-06-13 07:37:38,895 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 07:37:38,895 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 07:37:38,895 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 07:37:38,896 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 07:37:38,896 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 07:37:38,896 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 07:37:38,896 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 07:37:38,896 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-13 07:37:38,903 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 114 places, 103 transitions, 226 flow [2021-06-13 07:37:38,944 INFO L129 PetriNetUnfolder]: 2/99 cut-off events. [2021-06-13 07:37:38,944 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:37:38,954 INFO L84 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 99 events. 2/99 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 80. Up to 2 conditions per place. [2021-06-13 07:37:38,954 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 103 transitions, 226 flow [2021-06-13 07:37:38,958 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 97 places, 85 transitions, 182 flow [2021-06-13 07:37:38,984 INFO L129 PetriNetUnfolder]: 1/84 cut-off events. [2021-06-13 07:37:38,984 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:37:38,984 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:37:38,985 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:37:38,985 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:37:38,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:37:38,991 INFO L82 PathProgramCache]: Analyzing trace with hash -190192830, now seen corresponding path program 1 times [2021-06-13 07:37:38,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:37:38,997 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354097165] [2021-06-13 07:37:38,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:37:39,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:37:39,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:39,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:39,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:39,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:37:39,257 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-13 07:37:39,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 07:37:39,274 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:37:39,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:37:39,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:39,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:37:39,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:39,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:37:39,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:39,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:39,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:37:39,333 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:37:39,333 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354097165] [2021-06-13 07:37:39,334 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354097165] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:37:39,334 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:37:39,334 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:37:39,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163216674] [2021-06-13 07:37:39,340 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:37:39,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:37:39,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:37:39,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:37:39,352 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 103 [2021-06-13 07:37:39,359 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 85 transitions, 182 flow. Second operand has 7 states, 7 states have (on average 86.42857142857143) internal successors, (605), 7 states have internal predecessors, (605), 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) [2021-06-13 07:37:39,359 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:37:39,359 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 103 [2021-06-13 07:37:39,360 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:37:39,543 INFO L129 PetriNetUnfolder]: 197/562 cut-off events. [2021-06-13 07:37:39,543 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:37:39,547 INFO L84 FinitePrefix]: Finished finitePrefix Result has 897 conditions, 562 events. 197/562 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2984 event pairs, 47 based on Foata normal form. 19/558 useless extension candidates. Maximal degree in co-relation 859. Up to 121 conditions per place. [2021-06-13 07:37:39,550 INFO L132 encePairwiseOnDemand]: 95/103 looper letters, 14 selfloop transitions, 3 changer transitions 28/115 dead transitions. [2021-06-13 07:37:39,550 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 115 transitions, 332 flow [2021-06-13 07:37:39,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 07:37:39,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 07:37:39,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 899 transitions. [2021-06-13 07:37:39,567 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8728155339805825 [2021-06-13 07:37:39,568 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 899 transitions. [2021-06-13 07:37:39,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 899 transitions. [2021-06-13 07:37:39,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:37:39,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 899 transitions. [2021-06-13 07:37:39,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 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) [2021-06-13 07:37:39,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 103.0) internal successors, (1133), 11 states have internal predecessors, (1133), 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) [2021-06-13 07:37:39,586 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 103.0) internal successors, (1133), 11 states have internal predecessors, (1133), 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) [2021-06-13 07:37:39,588 INFO L185 Difference]: Start difference. First operand has 97 places, 85 transitions, 182 flow. Second operand 10 states and 899 transitions. [2021-06-13 07:37:39,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 115 transitions, 332 flow [2021-06-13 07:37:39,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 115 transitions, 328 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-06-13 07:37:39,600 INFO L241 Difference]: Finished difference. Result has 109 places, 84 transitions, 198 flow [2021-06-13 07:37:39,601 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=198, PETRI_PLACES=109, PETRI_TRANSITIONS=84} [2021-06-13 07:37:39,602 INFO L335 CegarLoopForPetriNet]: 97 programPoint places, 12 predicate places. [2021-06-13 07:37:39,602 INFO L482 AbstractCegarLoop]: Abstraction has has 109 places, 84 transitions, 198 flow [2021-06-13 07:37:39,602 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 86.42857142857143) internal successors, (605), 7 states have internal predecessors, (605), 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) [2021-06-13 07:37:39,603 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:37:39,603 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:37:39,603 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-13 07:37:39,603 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:37:39,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:37:39,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1595306051, now seen corresponding path program 1 times [2021-06-13 07:37:39,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:37:39,604 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337066701] [2021-06-13 07:37:39,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:37:39,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:37:39,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:39,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:39,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:39,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:37:39,712 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-13 07:37:39,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 07:37:39,722 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:37:39,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:37:39,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:39,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:37:39,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:39,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:37:39,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:39,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:39,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:37:39,759 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:37:39,759 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337066701] [2021-06-13 07:37:39,759 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337066701] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:37:39,759 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:37:39,760 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:37:39,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474250403] [2021-06-13 07:37:39,761 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:37:39,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:37:39,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:37:39,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:37:39,762 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 103 [2021-06-13 07:37:39,763 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 84 transitions, 198 flow. Second operand has 7 states, 7 states have (on average 86.57142857142857) internal successors, (606), 7 states have internal predecessors, (606), 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) [2021-06-13 07:37:39,763 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:37:39,763 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 103 [2021-06-13 07:37:39,763 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:37:39,899 INFO L129 PetriNetUnfolder]: 81/286 cut-off events. [2021-06-13 07:37:39,900 INFO L130 PetriNetUnfolder]: For 61/99 co-relation queries the response was YES. [2021-06-13 07:37:39,901 INFO L84 FinitePrefix]: Finished finitePrefix Result has 539 conditions, 286 events. 81/286 cut-off events. For 61/99 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1048 event pairs, 5 based on Foata normal form. 8/277 useless extension candidates. Maximal degree in co-relation 501. Up to 61 conditions per place. [2021-06-13 07:37:39,902 INFO L132 encePairwiseOnDemand]: 96/103 looper letters, 14 selfloop transitions, 3 changer transitions 22/109 dead transitions. [2021-06-13 07:37:39,902 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 109 transitions, 347 flow [2021-06-13 07:37:39,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 07:37:39,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 07:37:39,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 891 transitions. [2021-06-13 07:37:39,904 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8650485436893204 [2021-06-13 07:37:39,904 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 891 transitions. [2021-06-13 07:37:39,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 891 transitions. [2021-06-13 07:37:39,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:37:39,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 891 transitions. [2021-06-13 07:37:39,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 89.1) internal successors, (891), 10 states have internal predecessors, (891), 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) [2021-06-13 07:37:39,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 103.0) internal successors, (1133), 11 states have internal predecessors, (1133), 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) [2021-06-13 07:37:39,908 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 103.0) internal successors, (1133), 11 states have internal predecessors, (1133), 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) [2021-06-13 07:37:39,908 INFO L185 Difference]: Start difference. First operand has 109 places, 84 transitions, 198 flow. Second operand 10 states and 891 transitions. [2021-06-13 07:37:39,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 109 transitions, 347 flow [2021-06-13 07:37:39,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 109 transitions, 311 flow, removed 14 selfloop flow, removed 9 redundant places. [2021-06-13 07:37:39,913 INFO L241 Difference]: Finished difference. Result has 110 places, 84 transitions, 202 flow [2021-06-13 07:37:39,913 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=202, PETRI_PLACES=110, PETRI_TRANSITIONS=84} [2021-06-13 07:37:39,913 INFO L335 CegarLoopForPetriNet]: 97 programPoint places, 13 predicate places. [2021-06-13 07:37:39,913 INFO L482 AbstractCegarLoop]: Abstraction has has 110 places, 84 transitions, 202 flow [2021-06-13 07:37:39,914 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 86.57142857142857) internal successors, (606), 7 states have internal predecessors, (606), 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) [2021-06-13 07:37:39,914 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:37:39,914 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:37:39,914 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-13 07:37:39,914 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:37:39,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:37:39,916 INFO L82 PathProgramCache]: Analyzing trace with hash 639944640, now seen corresponding path program 1 times [2021-06-13 07:37:39,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:37:39,916 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834205025] [2021-06-13 07:37:39,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:37:39,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:37:40,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:40,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:40,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:40,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:37:40,019 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-13 07:37:40,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 07:37:40,033 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:37:40,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:37:40,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:40,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:37:40,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:40,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:37:40,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:40,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:40,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:37:40,075 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:37:40,075 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834205025] [2021-06-13 07:37:40,075 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834205025] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:37:40,075 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:37:40,075 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:37:40,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942325299] [2021-06-13 07:37:40,076 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:37:40,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:37:40,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:37:40,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:37:40,077 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 103 [2021-06-13 07:37:40,078 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 84 transitions, 202 flow. Second operand has 7 states, 7 states have (on average 86.71428571428571) internal successors, (607), 7 states have internal predecessors, (607), 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) [2021-06-13 07:37:40,078 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:37:40,078 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 103 [2021-06-13 07:37:40,078 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:37:40,184 INFO L129 PetriNetUnfolder]: 36/225 cut-off events. [2021-06-13 07:37:40,184 INFO L130 PetriNetUnfolder]: For 54/148 co-relation queries the response was YES. [2021-06-13 07:37:40,185 INFO L84 FinitePrefix]: Finished finitePrefix Result has 388 conditions, 225 events. 36/225 cut-off events. For 54/148 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 788 event pairs, 15 based on Foata normal form. 4/219 useless extension candidates. Maximal degree in co-relation 365. Up to 36 conditions per place. [2021-06-13 07:37:40,185 INFO L132 encePairwiseOnDemand]: 97/103 looper letters, 15 selfloop transitions, 2 changer transitions 16/103 dead transitions. [2021-06-13 07:37:40,185 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 103 transitions, 330 flow [2021-06-13 07:37:40,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 07:37:40,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 07:37:40,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 800 transitions. [2021-06-13 07:37:40,188 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8629989212513485 [2021-06-13 07:37:40,188 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 800 transitions. [2021-06-13 07:37:40,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 800 transitions. [2021-06-13 07:37:40,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:37:40,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 800 transitions. [2021-06-13 07:37:40,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 88.88888888888889) internal successors, (800), 9 states have internal predecessors, (800), 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) [2021-06-13 07:37:40,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 103.0) internal successors, (1030), 10 states have internal predecessors, (1030), 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) [2021-06-13 07:37:40,192 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 103.0) internal successors, (1030), 10 states have internal predecessors, (1030), 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) [2021-06-13 07:37:40,192 INFO L185 Difference]: Start difference. First operand has 110 places, 84 transitions, 202 flow. Second operand 9 states and 800 transitions. [2021-06-13 07:37:40,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 103 transitions, 330 flow [2021-06-13 07:37:40,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 103 transitions, 294 flow, removed 14 selfloop flow, removed 9 redundant places. [2021-06-13 07:37:40,194 INFO L241 Difference]: Finished difference. Result has 110 places, 84 transitions, 204 flow [2021-06-13 07:37:40,194 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=204, PETRI_PLACES=110, PETRI_TRANSITIONS=84} [2021-06-13 07:37:40,194 INFO L335 CegarLoopForPetriNet]: 97 programPoint places, 13 predicate places. [2021-06-13 07:37:40,194 INFO L482 AbstractCegarLoop]: Abstraction has has 110 places, 84 transitions, 204 flow [2021-06-13 07:37:40,195 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 86.71428571428571) internal successors, (607), 7 states have internal predecessors, (607), 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) [2021-06-13 07:37:40,195 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:37:40,195 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:37:40,195 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-13 07:37:40,195 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:37:40,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:37:40,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1911980991, now seen corresponding path program 1 times [2021-06-13 07:37:40,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:37:40,196 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788214799] [2021-06-13 07:37:40,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:37:40,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:37:40,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:40,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:40,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:40,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:37:40,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:40,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:37:40,239 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-13 07:37:40,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 07:37:40,246 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:37:40,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:37:40,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:40,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:37:40,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:40,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:37:40,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:40,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:40,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:37:40,274 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:37:40,274 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788214799] [2021-06-13 07:37:40,275 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788214799] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:37:40,275 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:37:40,275 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 07:37:40,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792327018] [2021-06-13 07:37:40,275 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 07:37:40,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:37:40,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 07:37:40,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-06-13 07:37:40,277 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 103 [2021-06-13 07:37:40,277 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 84 transitions, 204 flow. Second operand has 8 states, 8 states have (on average 84.75) internal successors, (678), 8 states have internal predecessors, (678), 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) [2021-06-13 07:37:40,277 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:37:40,277 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 103 [2021-06-13 07:37:40,277 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:37:40,390 INFO L129 PetriNetUnfolder]: 50/259 cut-off events. [2021-06-13 07:37:40,390 INFO L130 PetriNetUnfolder]: For 80/304 co-relation queries the response was YES. [2021-06-13 07:37:40,391 INFO L84 FinitePrefix]: Finished finitePrefix Result has 481 conditions, 259 events. 50/259 cut-off events. For 80/304 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1058 event pairs, 17 based on Foata normal form. 4/251 useless extension candidates. Maximal degree in co-relation 457. Up to 34 conditions per place. [2021-06-13 07:37:40,392 INFO L132 encePairwiseOnDemand]: 95/103 looper letters, 16 selfloop transitions, 4 changer transitions 18/106 dead transitions. [2021-06-13 07:37:40,392 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 106 transitions, 357 flow [2021-06-13 07:37:40,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 07:37:40,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 07:37:40,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 870 transitions. [2021-06-13 07:37:40,394 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8446601941747572 [2021-06-13 07:37:40,394 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 870 transitions. [2021-06-13 07:37:40,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 870 transitions. [2021-06-13 07:37:40,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:37:40,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 870 transitions. [2021-06-13 07:37:40,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 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) [2021-06-13 07:37:40,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 103.0) internal successors, (1133), 11 states have internal predecessors, (1133), 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) [2021-06-13 07:37:40,397 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 103.0) internal successors, (1133), 11 states have internal predecessors, (1133), 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) [2021-06-13 07:37:40,398 INFO L185 Difference]: Start difference. First operand has 110 places, 84 transitions, 204 flow. Second operand 10 states and 870 transitions. [2021-06-13 07:37:40,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 106 transitions, 357 flow [2021-06-13 07:37:40,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 106 transitions, 323 flow, removed 14 selfloop flow, removed 8 redundant places. [2021-06-13 07:37:40,402 INFO L241 Difference]: Finished difference. Result has 113 places, 84 transitions, 218 flow [2021-06-13 07:37:40,402 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=218, PETRI_PLACES=113, PETRI_TRANSITIONS=84} [2021-06-13 07:37:40,402 INFO L335 CegarLoopForPetriNet]: 97 programPoint places, 16 predicate places. [2021-06-13 07:37:40,402 INFO L482 AbstractCegarLoop]: Abstraction has has 113 places, 84 transitions, 218 flow [2021-06-13 07:37:40,404 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 84.75) internal successors, (678), 8 states have internal predecessors, (678), 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) [2021-06-13 07:37:40,404 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:37:40,404 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:37:40,404 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-13 07:37:40,404 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:37:40,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:37:40,404 INFO L82 PathProgramCache]: Analyzing trace with hash 2115385983, now seen corresponding path program 1 times [2021-06-13 07:37:40,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:37:40,407 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150515764] [2021-06-13 07:37:40,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:37:40,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:37:40,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:40,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:40,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:40,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:37:40,487 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-13 07:37:40,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 07:37:40,495 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:37:40,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:37:40,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:40,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:37:40,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:40,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:37:40,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:40,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:40,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:37:40,528 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:37:40,528 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150515764] [2021-06-13 07:37:40,528 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150515764] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:37:40,528 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:37:40,528 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:37:40,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203839983] [2021-06-13 07:37:40,529 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:37:40,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:37:40,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:37:40,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:37:40,531 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 103 [2021-06-13 07:37:40,531 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 84 transitions, 218 flow. Second operand has 7 states, 7 states have (on average 86.85714285714286) internal successors, (608), 7 states have internal predecessors, (608), 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) [2021-06-13 07:37:40,531 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:37:40,531 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 103 [2021-06-13 07:37:40,532 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:37:40,608 INFO L129 PetriNetUnfolder]: 12/143 cut-off events. [2021-06-13 07:37:40,608 INFO L130 PetriNetUnfolder]: For 59/76 co-relation queries the response was YES. [2021-06-13 07:37:40,608 INFO L84 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 143 events. 12/143 cut-off events. For 59/76 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 346 event pairs, 2 based on Foata normal form. 3/142 useless extension candidates. Maximal degree in co-relation 238. Up to 19 conditions per place. [2021-06-13 07:37:40,609 INFO L132 encePairwiseOnDemand]: 96/103 looper letters, 14 selfloop transitions, 3 changer transitions 10/97 dead transitions. [2021-06-13 07:37:40,609 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 97 transitions, 330 flow [2021-06-13 07:37:40,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 07:37:40,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 07:37:40,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 879 transitions. [2021-06-13 07:37:40,611 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8533980582524272 [2021-06-13 07:37:40,611 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 879 transitions. [2021-06-13 07:37:40,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 879 transitions. [2021-06-13 07:37:40,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:37:40,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 879 transitions. [2021-06-13 07:37:40,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 87.9) internal successors, (879), 10 states have internal predecessors, (879), 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) [2021-06-13 07:37:40,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 103.0) internal successors, (1133), 11 states have internal predecessors, (1133), 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) [2021-06-13 07:37:40,615 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 103.0) internal successors, (1133), 11 states have internal predecessors, (1133), 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) [2021-06-13 07:37:40,615 INFO L185 Difference]: Start difference. First operand has 113 places, 84 transitions, 218 flow. Second operand 10 states and 879 transitions. [2021-06-13 07:37:40,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 97 transitions, 330 flow [2021-06-13 07:37:40,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 97 transitions, 275 flow, removed 20 selfloop flow, removed 11 redundant places. [2021-06-13 07:37:40,620 INFO L241 Difference]: Finished difference. Result has 112 places, 84 transitions, 210 flow [2021-06-13 07:37:40,620 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=210, PETRI_PLACES=112, PETRI_TRANSITIONS=84} [2021-06-13 07:37:40,620 INFO L335 CegarLoopForPetriNet]: 97 programPoint places, 15 predicate places. [2021-06-13 07:37:40,620 INFO L482 AbstractCegarLoop]: Abstraction has has 112 places, 84 transitions, 210 flow [2021-06-13 07:37:40,621 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 86.85714285714286) internal successors, (608), 7 states have internal predecessors, (608), 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) [2021-06-13 07:37:40,621 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:37:40,621 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:37:40,621 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-13 07:37:40,621 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:37:40,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:37:40,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1504081974, now seen corresponding path program 1 times [2021-06-13 07:37:40,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:37:40,621 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745323367] [2021-06-13 07:37:40,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:37:40,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:37:40,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:40,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:40,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:40,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:37:40,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:40,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:37:40,690 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-13 07:37:40,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 07:37:40,701 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:37:40,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:37:40,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:40,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:37:40,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:40,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:37:40,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:40,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:40,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:37:40,742 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:37:40,742 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745323367] [2021-06-13 07:37:40,742 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745323367] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:37:40,742 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:37:40,742 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 07:37:40,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270325856] [2021-06-13 07:37:40,742 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 07:37:40,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:37:40,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 07:37:40,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-06-13 07:37:40,744 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 103 [2021-06-13 07:37:40,744 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 84 transitions, 210 flow. Second operand has 8 states, 8 states have (on average 84.875) internal successors, (679), 8 states have internal predecessors, (679), 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) [2021-06-13 07:37:40,744 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:37:40,744 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 103 [2021-06-13 07:37:40,745 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:37:40,837 INFO L129 PetriNetUnfolder]: 16/165 cut-off events. [2021-06-13 07:37:40,837 INFO L130 PetriNetUnfolder]: For 44/71 co-relation queries the response was YES. [2021-06-13 07:37:40,838 INFO L84 FinitePrefix]: Finished finitePrefix Result has 294 conditions, 165 events. 16/165 cut-off events. For 44/71 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 496 event pairs, 9 based on Foata normal form. 4/164 useless extension candidates. Maximal degree in co-relation 277. Up to 21 conditions per place. [2021-06-13 07:37:40,839 INFO L132 encePairwiseOnDemand]: 94/103 looper letters, 13 selfloop transitions, 5 changer transitions 12/98 dead transitions. [2021-06-13 07:37:40,839 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 98 transitions, 333 flow [2021-06-13 07:37:40,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-13 07:37:40,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-13 07:37:40,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 945 transitions. [2021-06-13 07:37:40,841 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8340688437775816 [2021-06-13 07:37:40,841 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 945 transitions. [2021-06-13 07:37:40,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 945 transitions. [2021-06-13 07:37:40,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:37:40,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 945 transitions. [2021-06-13 07:37:40,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 85.9090909090909) internal successors, (945), 11 states have internal predecessors, (945), 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) [2021-06-13 07:37:40,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 103.0) internal successors, (1236), 12 states have internal predecessors, (1236), 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) [2021-06-13 07:37:40,846 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 103.0) internal successors, (1236), 12 states have internal predecessors, (1236), 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) [2021-06-13 07:37:40,846 INFO L185 Difference]: Start difference. First operand has 112 places, 84 transitions, 210 flow. Second operand 11 states and 945 transitions. [2021-06-13 07:37:40,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 98 transitions, 333 flow [2021-06-13 07:37:40,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 98 transitions, 295 flow, removed 14 selfloop flow, removed 9 redundant places. [2021-06-13 07:37:40,848 INFO L241 Difference]: Finished difference. Result has 115 places, 84 transitions, 224 flow [2021-06-13 07:37:40,849 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=224, PETRI_PLACES=115, PETRI_TRANSITIONS=84} [2021-06-13 07:37:40,849 INFO L335 CegarLoopForPetriNet]: 97 programPoint places, 18 predicate places. [2021-06-13 07:37:40,849 INFO L482 AbstractCegarLoop]: Abstraction has has 115 places, 84 transitions, 224 flow [2021-06-13 07:37:40,849 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 84.875) internal successors, (679), 8 states have internal predecessors, (679), 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) [2021-06-13 07:37:40,849 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:37:40,849 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:37:40,849 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-13 07:37:40,849 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:37:40,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:37:40,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1555624906, now seen corresponding path program 1 times [2021-06-13 07:37:40,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:37:40,850 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762750413] [2021-06-13 07:37:40,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:37:40,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:37:40,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:40,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:40,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:40,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:37:40,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:40,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:37:40,907 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-13 07:37:40,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 07:37:40,915 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:37:40,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:37:40,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:40,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:37:40,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:40,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:37:40,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:40,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:40,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:37:40,942 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:37:40,942 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762750413] [2021-06-13 07:37:40,942 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762750413] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:37:40,942 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:37:40,942 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 07:37:40,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870325991] [2021-06-13 07:37:40,943 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 07:37:40,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:37:40,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 07:37:40,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-06-13 07:37:40,944 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 103 [2021-06-13 07:37:40,944 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 84 transitions, 224 flow. Second operand has 8 states, 8 states have (on average 84.875) internal successors, (679), 8 states have internal predecessors, (679), 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) [2021-06-13 07:37:40,944 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:37:40,944 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 103 [2021-06-13 07:37:40,944 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:37:41,037 INFO L129 PetriNetUnfolder]: 7/123 cut-off events. [2021-06-13 07:37:41,037 INFO L130 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2021-06-13 07:37:41,037 INFO L84 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 123 events. 7/123 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 227 event pairs, 3 based on Foata normal form. 2/123 useless extension candidates. Maximal degree in co-relation 212. Up to 11 conditions per place. [2021-06-13 07:37:41,038 INFO L132 encePairwiseOnDemand]: 94/103 looper letters, 11 selfloop transitions, 5 changer transitions 13/96 dead transitions. [2021-06-13 07:37:41,038 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 96 transitions, 341 flow [2021-06-13 07:37:41,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-13 07:37:41,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-13 07:37:41,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 943 transitions. [2021-06-13 07:37:41,040 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8323036187113857 [2021-06-13 07:37:41,040 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 943 transitions. [2021-06-13 07:37:41,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 943 transitions. [2021-06-13 07:37:41,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:37:41,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 943 transitions. [2021-06-13 07:37:41,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 85.72727272727273) internal successors, (943), 11 states have internal predecessors, (943), 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) [2021-06-13 07:37:41,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 103.0) internal successors, (1236), 12 states have internal predecessors, (1236), 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) [2021-06-13 07:37:41,044 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 103.0) internal successors, (1236), 12 states have internal predecessors, (1236), 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) [2021-06-13 07:37:41,044 INFO L185 Difference]: Start difference. First operand has 115 places, 84 transitions, 224 flow. Second operand 11 states and 943 transitions. [2021-06-13 07:37:41,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 96 transitions, 341 flow [2021-06-13 07:37:41,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 96 transitions, 289 flow, removed 20 selfloop flow, removed 11 redundant places. [2021-06-13 07:37:41,046 INFO L241 Difference]: Finished difference. Result has 116 places, 83 transitions, 226 flow [2021-06-13 07:37:41,046 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=226, PETRI_PLACES=116, PETRI_TRANSITIONS=83} [2021-06-13 07:37:41,046 INFO L335 CegarLoopForPetriNet]: 97 programPoint places, 19 predicate places. [2021-06-13 07:37:41,047 INFO L482 AbstractCegarLoop]: Abstraction has has 116 places, 83 transitions, 226 flow [2021-06-13 07:37:41,047 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 84.875) internal successors, (679), 8 states have internal predecessors, (679), 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) [2021-06-13 07:37:41,047 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:37:41,047 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:37:41,047 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-13 07:37:41,047 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:37:41,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:37:41,047 INFO L82 PathProgramCache]: Analyzing trace with hash 85472810, now seen corresponding path program 1 times [2021-06-13 07:37:41,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:37:41,048 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209643361] [2021-06-13 07:37:41,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:37:41,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:37:41,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:41,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:41,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:41,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:37:41,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:41,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:37:41,104 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-13 07:37:41,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 07:37:41,112 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:37:41,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:37:41,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:41,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:37:41,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:41,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:37:41,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:41,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:41,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:37:41,139 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:37:41,140 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209643361] [2021-06-13 07:37:41,140 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209643361] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:37:41,140 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:37:41,140 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 07:37:41,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192225686] [2021-06-13 07:37:41,140 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 07:37:41,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:37:41,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 07:37:41,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-06-13 07:37:41,142 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 103 [2021-06-13 07:37:41,142 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 83 transitions, 226 flow. Second operand has 8 states, 8 states have (on average 84.875) internal successors, (679), 8 states have internal predecessors, (679), 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) [2021-06-13 07:37:41,142 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:37:41,142 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 103 [2021-06-13 07:37:41,142 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:37:41,228 INFO L129 PetriNetUnfolder]: 4/98 cut-off events. [2021-06-13 07:37:41,228 INFO L130 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2021-06-13 07:37:41,229 INFO L84 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 98 events. 4/98 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 92 event pairs, 0 based on Foata normal form. 2/100 useless extension candidates. Maximal degree in co-relation 162. Up to 5 conditions per place. [2021-06-13 07:37:41,229 INFO L132 encePairwiseOnDemand]: 95/103 looper letters, 0 selfloop transitions, 0 changer transitions 88/88 dead transitions. [2021-06-13 07:37:41,229 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 88 transitions, 294 flow [2021-06-13 07:37:41,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-13 07:37:41,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-13 07:37:41,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 937 transitions. [2021-06-13 07:37:41,231 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8270079435127978 [2021-06-13 07:37:41,231 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 937 transitions. [2021-06-13 07:37:41,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 937 transitions. [2021-06-13 07:37:41,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:37:41,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 937 transitions. [2021-06-13 07:37:41,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 85.18181818181819) internal successors, (937), 11 states have internal predecessors, (937), 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) [2021-06-13 07:37:41,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 103.0) internal successors, (1236), 12 states have internal predecessors, (1236), 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) [2021-06-13 07:37:41,236 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 103.0) internal successors, (1236), 12 states have internal predecessors, (1236), 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) [2021-06-13 07:37:41,236 INFO L185 Difference]: Start difference. First operand has 116 places, 83 transitions, 226 flow. Second operand 11 states and 937 transitions. [2021-06-13 07:37:41,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 88 transitions, 294 flow [2021-06-13 07:37:41,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 88 transitions, 258 flow, removed 12 selfloop flow, removed 9 redundant places. [2021-06-13 07:37:41,237 INFO L241 Difference]: Finished difference. Result has 108 places, 0 transitions, 0 flow [2021-06-13 07:37:41,237 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=108, PETRI_TRANSITIONS=0} [2021-06-13 07:37:41,238 INFO L335 CegarLoopForPetriNet]: 97 programPoint places, 11 predicate places. [2021-06-13 07:37:41,238 INFO L482 AbstractCegarLoop]: Abstraction has has 108 places, 0 transitions, 0 flow [2021-06-13 07:37:41,238 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 84.875) internal successors, (679), 8 states have internal predecessors, (679), 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) [2021-06-13 07:37:41,238 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-13 07:37:41,240 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-13 07:37:41,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.06 07:37:41 BasicIcfg [2021-06-13 07:37:41,242 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-13 07:37:41,244 INFO L168 Benchmark]: Toolchain (without parser) took 3252.73 ms. Allocated memory was 219.2 MB in the beginning and 283.1 MB in the end (delta: 64.0 MB). Free memory was 180.9 MB in the beginning and 117.6 MB in the end (delta: 63.3 MB). Peak memory consumption was 128.1 MB. Max. memory is 8.0 GB. [2021-06-13 07:37:41,244 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 219.2 MB. Free memory is still 199.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-13 07:37:41,246 INFO L168 Benchmark]: CACSL2BoogieTranslator took 362.23 ms. Allocated memory is still 219.2 MB. Free memory was 180.7 MB in the beginning and 180.0 MB in the end (delta: 746.4 kB). Peak memory consumption was 11.7 MB. Max. memory is 8.0 GB. [2021-06-13 07:37:41,247 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.33 ms. Allocated memory is still 219.2 MB. Free memory was 180.0 MB in the beginning and 177.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-13 07:37:41,247 INFO L168 Benchmark]: Boogie Preprocessor took 14.82 ms. Allocated memory is still 219.2 MB. Free memory was 177.9 MB in the beginning and 176.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-13 07:37:41,247 INFO L168 Benchmark]: RCFGBuilder took 424.14 ms. Allocated memory is still 219.2 MB. Free memory was 176.3 MB in the beginning and 150.1 MB in the end (delta: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. [2021-06-13 07:37:41,248 INFO L168 Benchmark]: TraceAbstraction took 2419.13 ms. Allocated memory was 219.2 MB in the beginning and 283.1 MB in the end (delta: 64.0 MB). Free memory was 149.6 MB in the beginning and 117.6 MB in the end (delta: 32.0 MB). Peak memory consumption was 96.5 MB. Max. memory is 8.0 GB. [2021-06-13 07:37:41,251 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 219.2 MB. Free memory is still 199.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 362.23 ms. Allocated memory is still 219.2 MB. Free memory was 180.7 MB in the beginning and 180.0 MB in the end (delta: 746.4 kB). Peak memory consumption was 11.7 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 26.33 ms. Allocated memory is still 219.2 MB. Free memory was 180.0 MB in the beginning and 177.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 14.82 ms. Allocated memory is still 219.2 MB. Free memory was 177.9 MB in the beginning and 176.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 424.14 ms. Allocated memory is still 219.2 MB. Free memory was 176.3 MB in the beginning and 150.1 MB in the end (delta: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2419.13 ms. Allocated memory was 219.2 MB in the beginning and 283.1 MB in the end (delta: 64.0 MB). Free memory was 149.6 MB in the beginning and 117.6 MB in the end (delta: 32.0 MB). Peak memory consumption was 96.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 9 procedures, 134 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 26.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2345.8ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1049.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 62.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 144 SDtfs, 256 SDslu, 463 SDs, 0 SdLazy, 257 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 159.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 108 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 731.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred in iteration=7, InterpolantAutomatonStates: 82, 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: 24.6ms SsaConstructionTime, 195.6ms SatisfiabilityAnalysisTime, 826.5ms InterpolantComputationTime, 521 NumberOfCodeBlocks, 521 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 513 ConstructedInterpolants, 0 QuantifiedInterpolants, 2499 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...