/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-OGIterative-CovSimpl.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-lit/qw2004-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 07:04:22,968 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 07:04:22,970 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 07:04:22,990 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-13 07:04:22,991 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-13 07:04:22,993 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-13 07:04:22,996 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-13 07:04:23,001 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-13 07:04:23,002 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-13 07:04:23,007 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-13 07:04:23,007 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-13 07:04:23,008 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-13 07:04:23,008 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-13 07:04:23,009 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-13 07:04:23,009 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-13 07:04:23,010 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-13 07:04:23,010 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-13 07:04:23,011 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-13 07:04:23,012 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-13 07:04:23,013 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-13 07:04:23,014 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-13 07:04:23,014 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-13 07:04:23,015 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-13 07:04:23,015 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-13 07:04:23,017 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-13 07:04:23,041 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-13 07:04:23,041 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-13 07:04:23,041 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-13 07:04:23,043 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-OGIterative-CovSimpl.epf [2021-08-13 07:04:23,065 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 07:04:23,065 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 07:04:23,066 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 07:04:23,066 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 07:04:23,066 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 07:04:23,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 07:04:23,066 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 07:04:23,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 07:04:23,068 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 07:04:23,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 07:04:23,068 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 07:04:23,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 07:04:23,068 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 07:04:23,068 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 07:04:23,068 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 07:04:23,068 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 07:04:23,068 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 07:04:23,068 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 07:04:23,069 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 07:04:23,069 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 07:04:23,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 07:04:23,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 07:04:23,069 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 07:04:23,069 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 07:04:23,069 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 07:04:23,069 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 07:04:23,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 07:04:23,070 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 07:04:23,070 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 07:04:23,070 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 07:04:23,070 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 07:04:23,070 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-13 07:04:23,070 INFO L138 SettingsManager]: * Simplify away covered predicates in OwickiGries annotation=true 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 07:04:23,296 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 07:04:23,309 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 07:04:23,310 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 07:04:23,311 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-13 07:04:23,313 INFO L275 PluginConnector]: CDTParser initialized [2021-08-13 07:04:23,314 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/qw2004-2.i [2021-08-13 07:04:23,352 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93bb648cc/d211f223996441fc933f9e4236bbe390/FLAGf9adb9ffb [2021-08-13 07:04:23,809 INFO L306 CDTParser]: Found 1 translation units. [2021-08-13 07:04:23,810 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-2.i [2021-08-13 07:04:23,822 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93bb648cc/d211f223996441fc933f9e4236bbe390/FLAGf9adb9ffb [2021-08-13 07:04:23,839 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93bb648cc/d211f223996441fc933f9e4236bbe390 [2021-08-13 07:04:23,843 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 07:04:23,844 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-13 07:04:23,846 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-13 07:04:23,846 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-13 07:04:23,848 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-13 07:04:23,849 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 07:04:23" (1/1) ... [2021-08-13 07:04:23,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@320796f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 07:04:23, skipping insertion in model container [2021-08-13 07:04:23,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 07:04:23" (1/1) ... [2021-08-13 07:04:23,854 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-13 07:04:23,888 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-13 07:04:24,100 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-lit/qw2004-2.i[30003,30016] [2021-08-13 07:04:24,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 07:04:24,119 INFO L203 MainTranslator]: Completed pre-run [2021-08-13 07:04:24,177 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-lit/qw2004-2.i[30003,30016] [2021-08-13 07:04:24,181 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 07:04:24,243 INFO L208 MainTranslator]: Completed translation [2021-08-13 07:04:24,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 07:04:24 WrapperNode [2021-08-13 07:04:24,244 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-13 07:04:24,245 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 07:04:24,245 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 07:04:24,245 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 07:04:24,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 07:04:24" (1/1) ... [2021-08-13 07:04:24,273 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 07:04:24" (1/1) ... [2021-08-13 07:04:24,293 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 07:04:24,294 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 07:04:24,294 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 07:04:24,294 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 07:04:24,299 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 07:04:24" (1/1) ... [2021-08-13 07:04:24,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 07:04:24" (1/1) ... [2021-08-13 07:04:24,307 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 07:04:24" (1/1) ... [2021-08-13 07:04:24,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 07:04:24" (1/1) ... [2021-08-13 07:04:24,318 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 07:04:24" (1/1) ... [2021-08-13 07:04:24,319 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 07:04:24" (1/1) ... [2021-08-13 07:04:24,320 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 07:04:24" (1/1) ... [2021-08-13 07:04:24,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 07:04:24,323 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 07:04:24,323 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 07:04:24,323 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 07:04:24,323 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 07:04:24" (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 [2021-08-13 07:04:24,367 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2021-08-13 07:04:24,367 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2021-08-13 07:04:24,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-13 07:04:24,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-13 07:04:24,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-13 07:04:24,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-13 07:04:24,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-13 07:04:24,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-13 07:04:24,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 07:04:24,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 07:04:24,369 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-13 07:04:24,780 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 07:04:24,780 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2021-08-13 07:04:24,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 07:04:24 BoogieIcfgContainer [2021-08-13 07:04:24,782 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 07:04:24,784 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 07:04:24,784 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 07:04:24,786 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 07:04:24,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.08 07:04:23" (1/3) ... [2021-08-13 07:04:24,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c9c4a51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 07:04:24, skipping insertion in model container [2021-08-13 07:04:24,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 07:04:24" (2/3) ... [2021-08-13 07:04:24,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c9c4a51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 07:04:24, skipping insertion in model container [2021-08-13 07:04:24,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 07:04:24" (3/3) ... [2021-08-13 07:04:24,788 INFO L111 eAbstractionObserver]: Analyzing ICFG qw2004-2.i [2021-08-13 07:04:24,794 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 07:04:24,795 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 07:04:24,795 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 07:04:24,821 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,822 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,822 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,822 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,822 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,822 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,822 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,822 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,823 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,823 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,823 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,823 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,823 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,823 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,824 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,824 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,824 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,824 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,825 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,825 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,825 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,826 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,826 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,826 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,826 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,827 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,827 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,827 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,827 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,828 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,828 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,828 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,828 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,828 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,829 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,829 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,829 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,830 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,830 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,830 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,830 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,830 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,830 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,830 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,831 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~lse~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,831 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~lse~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,831 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~lse~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,831 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,831 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~lse~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,831 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,832 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,832 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,832 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,832 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,832 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,832 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,833 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,833 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,833 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,833 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,833 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,833 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,834 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,834 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,835 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,836 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,836 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,836 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~lse~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,836 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,836 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,836 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,836 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,836 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,837 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,837 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,837 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:04:24,839 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-13 07:04:24,856 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-13 07:04:24,881 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 07:04:24,881 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 07:04:24,881 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 07:04:24,882 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 07:04:24,882 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 07:04:24,882 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 07:04:24,882 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 07:04:24,882 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 07:04:24,892 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 97 places, 99 transitions, 203 flow [2021-08-13 07:04:24,929 INFO L129 PetriNetUnfolder]: 6/98 cut-off events. [2021-08-13 07:04:24,930 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 07:04:24,935 INFO L84 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 98 events. 6/98 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 93 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 76. Up to 3 conditions per place. [2021-08-13 07:04:24,935 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 99 transitions, 203 flow [2021-08-13 07:04:24,939 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 98 transitions, 199 flow [2021-08-13 07:04:24,969 INFO L129 PetriNetUnfolder]: 5/81 cut-off events. [2021-08-13 07:04:24,970 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 07:04:24,970 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:04:24,971 INFO L266 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] [2021-08-13 07:04:24,971 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 07:04:24,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:04:24,975 INFO L82 PathProgramCache]: Analyzing trace with hash 875980788, now seen corresponding path program 1 times [2021-08-13 07:04:24,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:04:24,982 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267215309] [2021-08-13 07:04:24,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:04:25,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:04:25,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:04:25,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:04:25,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:04:25,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 07:04:25,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:04:25,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 07:04:25,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:04:25,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:04:25,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:04:25,173 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:04:25,174 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267215309] [2021-08-13 07:04:25,174 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267215309] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:04:25,175 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:04:25,175 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-13 07:04:25,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893682830] [2021-08-13 07:04:25,181 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-13 07:04:25,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:04:25,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-13 07:04:25,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-13 07:04:25,192 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 99 [2021-08-13 07:04:25,194 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 98 transitions, 199 flow. Second operand has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 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) [2021-08-13 07:04:25,194 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:04:25,194 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 99 [2021-08-13 07:04:25,195 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:04:25,280 INFO L129 PetriNetUnfolder]: 11/193 cut-off events. [2021-08-13 07:04:25,280 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 07:04:25,282 INFO L84 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 193 events. 11/193 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 560 event pairs, 0 based on Foata normal form. 6/185 useless extension candidates. Maximal degree in co-relation 183. Up to 6 conditions per place. [2021-08-13 07:04:25,283 INFO L132 encePairwiseOnDemand]: 92/99 looper letters, 7 selfloop transitions, 5 changer transitions 0/100 dead transitions. [2021-08-13 07:04:25,283 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 100 transitions, 227 flow [2021-08-13 07:04:25,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 07:04:25,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 07:04:25,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 464 transitions. [2021-08-13 07:04:25,292 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9373737373737374 [2021-08-13 07:04:25,292 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 464 transitions. [2021-08-13 07:04:25,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 464 transitions. [2021-08-13 07:04:25,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:04:25,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 464 transitions. [2021-08-13 07:04:25,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 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) [2021-08-13 07:04:25,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 99.0) internal successors, (594), 6 states have internal predecessors, (594), 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) [2021-08-13 07:04:25,306 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 99.0) internal successors, (594), 6 states have internal predecessors, (594), 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) [2021-08-13 07:04:25,306 INFO L348 CegarLoopForPetriNet]: 96 programPoint places, 3 predicate places. [2021-08-13 07:04:25,306 INFO L482 AbstractCegarLoop]: Abstraction has has 99 places, 100 transitions, 227 flow [2021-08-13 07:04:25,307 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 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) [2021-08-13 07:04:25,307 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:04:25,307 INFO L266 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] [2021-08-13 07:04:25,307 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 07:04:25,307 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 07:04:25,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:04:25,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1500917589, now seen corresponding path program 1 times [2021-08-13 07:04:25,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:04:25,308 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309952408] [2021-08-13 07:04:25,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:04:25,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:04:25,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:04:25,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:04:25,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:04:25,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 07:04:25,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:04:25,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-08-13 07:04:25,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:04:25,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-08-13 07:04:25,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:04:25,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:04:25,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:04:25,413 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:04:25,413 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309952408] [2021-08-13 07:04:25,413 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309952408] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:04:25,413 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:04:25,413 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 07:04:25,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203448993] [2021-08-13 07:04:25,414 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-13 07:04:25,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:04:25,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-13 07:04:25,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-13 07:04:25,416 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 99 [2021-08-13 07:04:25,417 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 100 transitions, 227 flow. Second operand has 5 states, 5 states have (on average 89.2) internal successors, (446), 5 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:04:25,417 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:04:25,417 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 99 [2021-08-13 07:04:25,417 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:04:25,552 INFO L129 PetriNetUnfolder]: 21/368 cut-off events. [2021-08-13 07:04:25,552 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 07:04:25,555 INFO L84 FinitePrefix]: Finished finitePrefix Result has 428 conditions, 368 events. 21/368 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1729 event pairs, 0 based on Foata normal form. 0/348 useless extension candidates. Maximal degree in co-relation 396. Up to 20 conditions per place. [2021-08-13 07:04:25,557 INFO L132 encePairwiseOnDemand]: 93/99 looper letters, 7 selfloop transitions, 5 changer transitions 5/109 dead transitions. [2021-08-13 07:04:25,557 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 109 transitions, 279 flow [2021-08-13 07:04:25,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 07:04:25,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 07:04:25,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 723 transitions. [2021-08-13 07:04:25,564 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9128787878787878 [2021-08-13 07:04:25,564 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 723 transitions. [2021-08-13 07:04:25,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 723 transitions. [2021-08-13 07:04:25,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:04:25,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 723 transitions. [2021-08-13 07:04:25,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 90.375) internal successors, (723), 8 states have internal predecessors, (723), 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) [2021-08-13 07:04:25,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 99.0) internal successors, (891), 9 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) [2021-08-13 07:04:25,573 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 99.0) internal successors, (891), 9 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) [2021-08-13 07:04:25,573 INFO L348 CegarLoopForPetriNet]: 96 programPoint places, 10 predicate places. [2021-08-13 07:04:25,573 INFO L482 AbstractCegarLoop]: Abstraction has has 106 places, 109 transitions, 279 flow [2021-08-13 07:04:25,574 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 89.2) internal successors, (446), 5 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:04:25,574 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:04:25,574 INFO L266 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] [2021-08-13 07:04:25,574 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 07:04:25,574 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 07:04:25,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:04:25,575 INFO L82 PathProgramCache]: Analyzing trace with hash 2060640592, now seen corresponding path program 1 times [2021-08-13 07:04:25,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:04:25,575 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893630035] [2021-08-13 07:04:25,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:04:25,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:04:25,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:04:25,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:04:25,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:04:25,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 07:04:25,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:04:25,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 07:04:25,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:04:25,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 07:04:25,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:04:25,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 07:04:25,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:04:25,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:04:25,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:04:25,662 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:04:25,662 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893630035] [2021-08-13 07:04:25,662 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893630035] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:04:25,663 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:04:25,665 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 07:04:25,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272941009] [2021-08-13 07:04:25,666 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 07:04:25,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:04:25,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 07:04:25,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 07:04:25,672 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 99 [2021-08-13 07:04:25,672 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 109 transitions, 279 flow. Second operand has 6 states, 6 states have (on average 86.33333333333333) internal successors, (518), 6 states have internal predecessors, (518), 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) [2021-08-13 07:04:25,672 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:04:25,672 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 99 [2021-08-13 07:04:25,672 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:04:25,838 INFO L129 PetriNetUnfolder]: 63/722 cut-off events. [2021-08-13 07:04:25,839 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-08-13 07:04:25,840 INFO L84 FinitePrefix]: Finished finitePrefix Result has 920 conditions, 722 events. 63/722 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5347 event pairs, 0 based on Foata normal form. 0/670 useless extension candidates. Maximal degree in co-relation 884. Up to 75 conditions per place. [2021-08-13 07:04:25,841 INFO L132 encePairwiseOnDemand]: 91/99 looper letters, 9 selfloop transitions, 7 changer transitions 16/124 dead transitions. [2021-08-13 07:04:25,841 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 124 transitions, 361 flow [2021-08-13 07:04:25,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 07:04:25,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 07:04:25,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 878 transitions. [2021-08-13 07:04:25,844 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8868686868686869 [2021-08-13 07:04:25,844 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 878 transitions. [2021-08-13 07:04:25,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 878 transitions. [2021-08-13 07:04:25,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:04:25,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 878 transitions. [2021-08-13 07:04:25,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 87.8) internal successors, (878), 10 states have internal predecessors, (878), 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) [2021-08-13 07:04:25,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 99.0) internal successors, (1089), 11 states have internal predecessors, (1089), 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) [2021-08-13 07:04:25,848 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 99.0) internal successors, (1089), 11 states have internal predecessors, (1089), 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) [2021-08-13 07:04:25,848 INFO L348 CegarLoopForPetriNet]: 96 programPoint places, 19 predicate places. [2021-08-13 07:04:25,848 INFO L482 AbstractCegarLoop]: Abstraction has has 115 places, 124 transitions, 361 flow [2021-08-13 07:04:25,848 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 86.33333333333333) internal successors, (518), 6 states have internal predecessors, (518), 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) [2021-08-13 07:04:25,848 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:04:25,848 INFO L266 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] [2021-08-13 07:04:25,849 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 07:04:25,849 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 07:04:25,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:04:25,850 INFO L82 PathProgramCache]: Analyzing trace with hash -48380598, now seen corresponding path program 1 times [2021-08-13 07:04:25,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:04:25,850 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162278528] [2021-08-13 07:04:25,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:04:25,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:04:25,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:04:25,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:04:25,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:04:25,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 07:04:25,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:04:25,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 07:04:25,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:04:25,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 07:04:25,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:04:25,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:04:25,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:04:25,949 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:04:25,949 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162278528] [2021-08-13 07:04:25,949 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162278528] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:04:25,949 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:04:25,949 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 07:04:25,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619103076] [2021-08-13 07:04:25,950 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-13 07:04:25,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:04:25,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-13 07:04:25,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-13 07:04:25,951 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 99 [2021-08-13 07:04:25,951 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 124 transitions, 361 flow. Second operand has 5 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 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) [2021-08-13 07:04:25,951 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:04:25,951 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 99 [2021-08-13 07:04:25,951 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:04:26,049 INFO L129 PetriNetUnfolder]: 43/541 cut-off events. [2021-08-13 07:04:26,049 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-08-13 07:04:26,050 INFO L84 FinitePrefix]: Finished finitePrefix Result has 718 conditions, 541 events. 43/541 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3530 event pairs, 0 based on Foata normal form. 0/503 useless extension candidates. Maximal degree in co-relation 681. Up to 58 conditions per place. [2021-08-13 07:04:26,051 INFO L132 encePairwiseOnDemand]: 94/99 looper letters, 10 selfloop transitions, 0 changer transitions 23/129 dead transitions. [2021-08-13 07:04:26,051 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 129 transitions, 403 flow [2021-08-13 07:04:26,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 07:04:26,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 07:04:26,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 527 transitions. [2021-08-13 07:04:26,053 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8872053872053872 [2021-08-13 07:04:26,053 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 527 transitions. [2021-08-13 07:04:26,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 527 transitions. [2021-08-13 07:04:26,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:04:26,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 527 transitions. [2021-08-13 07:04:26,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 87.83333333333333) internal successors, (527), 6 states have internal predecessors, (527), 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) [2021-08-13 07:04:26,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 99.0) internal successors, (693), 7 states have internal predecessors, (693), 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) [2021-08-13 07:04:26,062 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 99.0) internal successors, (693), 7 states have internal predecessors, (693), 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) [2021-08-13 07:04:26,063 INFO L348 CegarLoopForPetriNet]: 96 programPoint places, 24 predicate places. [2021-08-13 07:04:26,063 INFO L482 AbstractCegarLoop]: Abstraction has has 120 places, 129 transitions, 403 flow [2021-08-13 07:04:26,063 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 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) [2021-08-13 07:04:26,063 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:04:26,063 INFO L266 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] [2021-08-13 07:04:26,063 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 07:04:26,063 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 07:04:26,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:04:26,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1759520846, now seen corresponding path program 1 times [2021-08-13 07:04:26,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:04:26,064 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397675155] [2021-08-13 07:04:26,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:04:26,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:04:26,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:04:26,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:04:26,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:04:26,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 07:04:26,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:04:26,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 07:04:26,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:04:26,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 07:04:26,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:04:26,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 07:04:26,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:04:26,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 07:04:26,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:04:26,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-08-13 07:04:26,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:04:26,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-08-13 07:04:26,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:04:26,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:04:26,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:04:26,171 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:04:26,171 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397675155] [2021-08-13 07:04:26,171 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397675155] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:04:26,171 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:04:26,171 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-13 07:04:26,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486781975] [2021-08-13 07:04:26,171 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 07:04:26,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:04:26,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 07:04:26,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-08-13 07:04:26,173 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 99 [2021-08-13 07:04:26,173 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 129 transitions, 403 flow. Second operand has 9 states, 9 states have (on average 79.66666666666667) internal successors, (717), 9 states have internal predecessors, (717), 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) [2021-08-13 07:04:26,173 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:04:26,173 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 99 [2021-08-13 07:04:26,173 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:04:26,524 INFO L129 PetriNetUnfolder]: 85/767 cut-off events. [2021-08-13 07:04:26,524 INFO L130 PetriNetUnfolder]: For 113/443 co-relation queries the response was YES. [2021-08-13 07:04:26,526 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1279 conditions, 767 events. 85/767 cut-off events. For 113/443 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 5444 event pairs, 5 based on Foata normal form. 49/782 useless extension candidates. Maximal degree in co-relation 1236. Up to 94 conditions per place. [2021-08-13 07:04:26,528 INFO L132 encePairwiseOnDemand]: 90/99 looper letters, 15 selfloop transitions, 5 changer transitions 103/177 dead transitions. [2021-08-13 07:04:26,528 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 177 transitions, 767 flow [2021-08-13 07:04:26,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-13 07:04:26,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-08-13 07:04:26,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1016 transitions. [2021-08-13 07:04:26,531 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8552188552188552 [2021-08-13 07:04:26,531 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1016 transitions. [2021-08-13 07:04:26,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1016 transitions. [2021-08-13 07:04:26,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:04:26,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1016 transitions. [2021-08-13 07:04:26,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 84.66666666666667) internal successors, (1016), 12 states have internal predecessors, (1016), 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) [2021-08-13 07:04:26,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 99.0) internal successors, (1287), 13 states have internal predecessors, (1287), 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) [2021-08-13 07:04:26,536 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 99.0) internal successors, (1287), 13 states have internal predecessors, (1287), 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) [2021-08-13 07:04:26,537 INFO L348 CegarLoopForPetriNet]: 96 programPoint places, 35 predicate places. [2021-08-13 07:04:26,537 INFO L482 AbstractCegarLoop]: Abstraction has has 131 places, 177 transitions, 767 flow [2021-08-13 07:04:26,537 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 79.66666666666667) internal successors, (717), 9 states have internal predecessors, (717), 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) [2021-08-13 07:04:26,537 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:04:26,537 INFO L266 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] [2021-08-13 07:04:26,537 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 07:04:26,537 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 07:04:26,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:04:26,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1495348762, now seen corresponding path program 2 times [2021-08-13 07:04:26,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:04:26,538 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479309291] [2021-08-13 07:04:26,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:04:26,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:04:26,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:04:26,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:04:26,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:04:26,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 07:04:26,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:04:26,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 07:04:26,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:04:26,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 07:04:26,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:04:26,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-08-13 07:04:26,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:04:26,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-08-13 07:04:26,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:04:26,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-08-13 07:04:26,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:04:26,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-08-13 07:04:26,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:04:26,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:04:26,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:04:26,659 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:04:26,659 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479309291] [2021-08-13 07:04:26,660 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479309291] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:04:26,660 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:04:26,660 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-13 07:04:26,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254519195] [2021-08-13 07:04:26,660 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 07:04:26,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:04:26,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 07:04:26,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 07:04:26,665 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 99 [2021-08-13 07:04:26,665 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 177 transitions, 767 flow. Second operand has 9 states, 9 states have (on average 78.88888888888889) internal successors, (710), 9 states have internal predecessors, (710), 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) [2021-08-13 07:04:26,665 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:04:26,665 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 99 [2021-08-13 07:04:26,665 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:04:27,029 INFO L129 PetriNetUnfolder]: 218/2522 cut-off events. [2021-08-13 07:04:27,029 INFO L130 PetriNetUnfolder]: For 222/351 co-relation queries the response was YES. [2021-08-13 07:04:27,033 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4016 conditions, 2522 events. 218/2522 cut-off events. For 222/351 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 26080 event pairs, 40 based on Foata normal form. 1/2416 useless extension candidates. Maximal degree in co-relation 3969. Up to 206 conditions per place. [2021-08-13 07:04:27,035 INFO L132 encePairwiseOnDemand]: 88/99 looper letters, 31 selfloop transitions, 6 changer transitions 132/234 dead transitions. [2021-08-13 07:04:27,035 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 234 transitions, 1051 flow [2021-08-13 07:04:27,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-13 07:04:27,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-08-13 07:04:27,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1155 transitions. [2021-08-13 07:04:27,038 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2021-08-13 07:04:27,038 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1155 transitions. [2021-08-13 07:04:27,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1155 transitions. [2021-08-13 07:04:27,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:04:27,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1155 transitions. [2021-08-13 07:04:27,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 82.5) internal successors, (1155), 14 states have internal predecessors, (1155), 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) [2021-08-13 07:04:27,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 99.0) internal successors, (1485), 15 states have internal predecessors, (1485), 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) [2021-08-13 07:04:27,043 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 99.0) internal successors, (1485), 15 states have internal predecessors, (1485), 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) [2021-08-13 07:04:27,043 INFO L348 CegarLoopForPetriNet]: 96 programPoint places, 48 predicate places. [2021-08-13 07:04:27,043 INFO L482 AbstractCegarLoop]: Abstraction has has 144 places, 234 transitions, 1051 flow [2021-08-13 07:04:27,044 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 78.88888888888889) internal successors, (710), 9 states have internal predecessors, (710), 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) [2021-08-13 07:04:27,044 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:04:27,044 INFO L266 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] [2021-08-13 07:04:27,044 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-13 07:04:27,044 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 07:04:27,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:04:27,045 INFO L82 PathProgramCache]: Analyzing trace with hash -426674278, now seen corresponding path program 3 times [2021-08-13 07:04:27,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:04:27,045 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426609770] [2021-08-13 07:04:27,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:04:27,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-13 07:04:27,056 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-13 07:04:27,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-13 07:04:27,067 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-13 07:04:27,090 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-13 07:04:27,090 INFO L651 BasicCegarLoop]: Counterexample might be feasible [2021-08-13 07:04:27,090 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-13 07:04:27,093 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-13 07:04:27,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.08 07:04:27 BasicIcfg [2021-08-13 07:04:27,147 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-13 07:04:27,148 INFO L168 Benchmark]: Toolchain (without parser) took 3303.39 ms. Allocated memory was 211.8 MB in the beginning and 280.0 MB in the end (delta: 68.2 MB). Free memory was 175.3 MB in the beginning and 194.5 MB in the end (delta: -19.2 MB). Peak memory consumption was 49.4 MB. Max. memory is 8.0 GB. [2021-08-13 07:04:27,148 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 211.8 MB. Free memory is still 193.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-13 07:04:27,148 INFO L168 Benchmark]: CACSL2BoogieTranslator took 398.26 ms. Allocated memory is still 211.8 MB. Free memory was 175.1 MB in the beginning and 175.5 MB in the end (delta: -447.7 kB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-08-13 07:04:27,149 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.42 ms. Allocated memory is still 211.8 MB. Free memory was 175.5 MB in the beginning and 173.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-08-13 07:04:27,149 INFO L168 Benchmark]: Boogie Preprocessor took 28.49 ms. Allocated memory is still 211.8 MB. Free memory was 173.4 MB in the beginning and 172.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-13 07:04:27,149 INFO L168 Benchmark]: RCFGBuilder took 459.86 ms. Allocated memory is still 211.8 MB. Free memory was 172.4 MB in the beginning and 144.6 MB in the end (delta: 27.8 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. [2021-08-13 07:04:27,150 INFO L168 Benchmark]: TraceAbstraction took 2363.49 ms. Allocated memory was 211.8 MB in the beginning and 280.0 MB in the end (delta: 68.2 MB). Free memory was 144.1 MB in the beginning and 194.5 MB in the end (delta: -50.4 MB). Peak memory consumption was 18.8 MB. Max. memory is 8.0 GB. [2021-08-13 07:04:27,151 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 211.8 MB. Free memory is still 193.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 398.26 ms. Allocated memory is still 211.8 MB. Free memory was 175.1 MB in the beginning and 175.5 MB in the end (delta: -447.7 kB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 48.42 ms. Allocated memory is still 211.8 MB. Free memory was 175.5 MB in the beginning and 173.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 28.49 ms. Allocated memory is still 211.8 MB. Free memory was 173.4 MB in the beginning and 172.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 459.86 ms. Allocated memory is still 211.8 MB. Free memory was 172.4 MB in the beginning and 144.6 MB in the end (delta: 27.8 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2363.49 ms. Allocated memory was 211.8 MB in the beginning and 280.0 MB in the end (delta: 68.2 MB). Free memory was 144.1 MB in the beginning and 194.5 MB in the end (delta: -50.4 MB). Peak memory consumption was 18.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 690]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L697] 0 volatile int stoppingFlag; VAL [stoppingFlag=0] [L698] 0 volatile int pendingIo; VAL [pendingIo=0, stoppingFlag=0] [L699] 0 volatile int stoppingEvent; VAL [pendingIo=0, stoppingEvent=0, stoppingFlag=0] [L700] 0 volatile int stopped; VAL [pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=0] [L755] 0 pthread_t t; VAL [pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=0] [L756] 0 pendingIo = 1 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L757] 0 stoppingFlag = 0 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L758] 0 stoppingEvent = 0 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L759] 0 stopped = 0 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L760] FCALL, FORK 0 pthread_create(&t, 0, BCSP_PnpStop, 0) VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L734] 0 int status; VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L703] 0 int lsf = stoppingFlag; VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L705] COND FALSE 0 !(\read(lsf)) VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L744] 1 stoppingFlag = 1 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L725] 1 int pending; VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L719] 1 pendingIo-- [L720] 1 int tmp = pendingIo; VAL [pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=1] [L722] 1 return tmp; VAL [pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=1] [L726] 1 pending = dec() VAL [pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=1] [L727] COND TRUE 1 pending == 0 VAL [pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=1] [L729] 1 stoppingEvent = 1 VAL [pendingIo=0, stopped=0, stoppingEvent=1, stoppingFlag=1] [L748] 1 int lse = stoppingEvent; VAL [pendingIo=0, stopped=0, stoppingEvent=1, stoppingFlag=1] [L686] COND FALSE 1 !(!cond) VAL [pendingIo=0, stopped=0, stoppingEvent=1, stoppingFlag=1] [L751] 1 stopped = 1 VAL [pendingIo=0, stopped=1, stoppingEvent=1, stoppingFlag=1] [L709] 0 int lp = pendingIo; VAL [pendingIo=0, stopped=1, stoppingEvent=1, stoppingFlag=1] [L712] 0 pendingIo = lp + 1 VAL [pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] [L715] 0 return 0; VAL [pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] [L735] 0 status = BCSP_IoIncrement() VAL [pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] [L736] COND TRUE 0 status == 0 VAL [pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] [L689] COND TRUE 0 !(cond) VAL [pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] [L690] 0 reach_error() VAL [pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 119 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 30.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 2213.1ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1315.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 56.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 113 SDtfs, 167 SDslu, 367 SDs, 0 SdLazy, 331 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 267.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 533.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1051occurred in iteration=6, InterpolantAutomatonStates: 55, 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: 43.3ms SsaConstructionTime, 104.3ms SatisfiabilityAnalysisTime, 474.9ms InterpolantComputationTime, 415 NumberOfCodeBlocks, 415 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 343 ConstructedInterpolants, 0 QuantifiedInterpolants, 654 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...