/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-lit/qw2004-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-13 07:37:42,944 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-13 07:37:42,945 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-13 07:37:42,967 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-13 07:37:42,967 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-13 07:37:42,969 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-13 07:37:42,972 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-13 07:37:42,977 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-13 07:37:42,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-13 07:37:42,982 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-13 07:37:42,982 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-13 07:37:42,983 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-13 07:37:42,984 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-13 07:37:42,985 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-13 07:37:42,986 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-13 07:37:42,987 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-13 07:37:42,988 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-13 07:37:42,988 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-13 07:37:42,992 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-13 07:37:42,996 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-13 07:37:42,997 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-13 07:37:43,000 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-13 07:37:43,000 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-13 07:37:43,001 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-13 07:37:43,002 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-13 07:37:43,004 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-13 07:37:43,004 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-13 07:37:43,004 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-13 07:37:43,005 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-13 07:37:43,005 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-13 07:37:43,006 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-13 07:37:43,006 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-13 07:37:43,006 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-13 07:37:43,006 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-13 07:37:43,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-13 07:37:43,007 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-13 07:37:43,013 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2021-06-13 07:37:43,040 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-13 07:37:43,040 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-13 07:37:43,043 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-13 07:37:43,043 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-13 07:37:43,043 INFO L138 SettingsManager]: * Use SBE=true [2021-06-13 07:37:43,043 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-13 07:37:43,043 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-13 07:37:43,043 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-13 07:37:43,043 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-13 07:37:43,043 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-13 07:37:43,044 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-13 07:37:43,044 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-13 07:37:43,050 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-13 07:37:43,053 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-13 07:37:43,054 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-13 07:37:43,054 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-13 07:37:43,054 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-13 07:37:43,054 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-13 07:37:43,054 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-13 07:37:43,054 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-13 07:37:43,054 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-13 07:37:43,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 07:37:43,055 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-13 07:37:43,055 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-13 07:37:43,055 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-13 07:37:43,055 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-13 07:37:43,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-13 07:37:43,055 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-13 07:37:43,055 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-13 07:37:43,055 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-13 07:37:43,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-13 07:37:43,277 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-13 07:37:43,279 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-13 07:37:43,280 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-13 07:37:43,280 INFO L275 PluginConnector]: CDTParser initialized [2021-06-13 07:37:43,281 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/qw2004-1.i [2021-06-13 07:37:43,332 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76311d7f0/9b7fd001f1264b82885704958e026f7e/FLAG196f10d10 [2021-06-13 07:37:43,761 INFO L306 CDTParser]: Found 1 translation units. [2021-06-13 07:37:43,761 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-1.i [2021-06-13 07:37:43,770 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76311d7f0/9b7fd001f1264b82885704958e026f7e/FLAG196f10d10 [2021-06-13 07:37:43,779 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76311d7f0/9b7fd001f1264b82885704958e026f7e [2021-06-13 07:37:43,781 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-13 07:37:43,782 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-13 07:37:43,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-13 07:37:43,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-13 07:37:43,785 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-13 07:37:43,786 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 07:37:43" (1/1) ... [2021-06-13 07:37:43,787 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fd0457d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:37:43, skipping insertion in model container [2021-06-13 07:37:43,787 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 07:37:43" (1/1) ... [2021-06-13 07:37:43,791 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-13 07:37:43,817 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-13 07:37:43,996 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/qw2004-1.i[30003,30016] [2021-06-13 07:37:44,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 07:37:44,010 INFO L203 MainTranslator]: Completed pre-run [2021-06-13 07:37:44,032 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/qw2004-1.i[30003,30016] [2021-06-13 07:37:44,036 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 07:37:44,076 INFO L208 MainTranslator]: Completed translation [2021-06-13 07:37:44,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:37:44 WrapperNode [2021-06-13 07:37:44,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-13 07:37:44,077 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-13 07:37:44,077 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-13 07:37:44,077 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-13 07:37:44,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:37:44" (1/1) ... [2021-06-13 07:37:44,090 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:37:44" (1/1) ... [2021-06-13 07:37:44,102 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-13 07:37:44,103 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-13 07:37:44,103 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-13 07:37:44,103 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-13 07:37:44,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:37:44" (1/1) ... [2021-06-13 07:37:44,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:37:44" (1/1) ... [2021-06-13 07:37:44,109 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:37:44" (1/1) ... [2021-06-13 07:37:44,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:37:44" (1/1) ... [2021-06-13 07:37:44,112 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:37:44" (1/1) ... [2021-06-13 07:37:44,114 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:37:44" (1/1) ... [2021-06-13 07:37:44,115 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:37:44" (1/1) ... [2021-06-13 07:37:44,116 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-13 07:37:44,117 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-13 07:37:44,117 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-13 07:37:44,117 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-13 07:37:44,117 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:37:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 07:37:44,185 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2021-06-13 07:37:44,185 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2021-06-13 07:37:44,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-13 07:37:44,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-13 07:37:44,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-13 07:37:44,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-13 07:37:44,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-13 07:37:44,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-13 07:37:44,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-13 07:37:44,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-13 07:37:44,187 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-13 07:37:44,476 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-13 07:37:44,476 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2021-06-13 07:37:44,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 07:37:44 BoogieIcfgContainer [2021-06-13 07:37:44,479 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-13 07:37:44,480 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-13 07:37:44,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-13 07:37:44,482 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-13 07:37:44,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.06 07:37:43" (1/3) ... [2021-06-13 07:37:44,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4acc0ef8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 07:37:44, skipping insertion in model container [2021-06-13 07:37:44,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:37:44" (2/3) ... [2021-06-13 07:37:44,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4acc0ef8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 07:37:44, skipping insertion in model container [2021-06-13 07:37:44,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 07:37:44" (3/3) ... [2021-06-13 07:37:44,484 INFO L111 eAbstractionObserver]: Analyzing ICFG qw2004-1.i [2021-06-13 07:37:44,491 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-13 07:37:44,491 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-13 07:37:44,492 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-13 07:37:44,524 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,524 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,524 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,524 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,525 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,525 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,525 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,525 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,525 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,525 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,526 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,526 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,526 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,526 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,526 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,526 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,526 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,526 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,527 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,527 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,527 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,527 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,527 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,527 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,527 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,527 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,528 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,528 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,529 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,529 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,529 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,530 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,530 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,530 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,530 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,530 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,530 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,530 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,531 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,531 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,531 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,532 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,532 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,532 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,533 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,533 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,533 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,533 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,533 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,533 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,534 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,534 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,534 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,534 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,534 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,534 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,535 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,535 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,535 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,535 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,537 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,537 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,537 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,537 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,537 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,538 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,538 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,538 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,538 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,538 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,538 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:44,544 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-13 07:37:44,567 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-13 07:37:44,589 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 07:37:44,589 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 07:37:44,589 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 07:37:44,589 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 07:37:44,589 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 07:37:44,590 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 07:37:44,590 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 07:37:44,590 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-13 07:37:44,601 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 94 transitions, 193 flow [2021-06-13 07:37:44,644 INFO L129 PetriNetUnfolder]: 6/93 cut-off events. [2021-06-13 07:37:44,644 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:37:44,654 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 93 events. 6/93 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 88 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 71. Up to 3 conditions per place. [2021-06-13 07:37:44,654 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 94 transitions, 193 flow [2021-06-13 07:37:44,658 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 93 transitions, 189 flow [2021-06-13 07:37:44,679 INFO L129 PetriNetUnfolder]: 5/76 cut-off events. [2021-06-13 07:37:44,679 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:37:44,680 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:37:44,680 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:37:44,680 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:37:44,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:37:44,685 INFO L82 PathProgramCache]: Analyzing trace with hash -726564783, now seen corresponding path program 1 times [2021-06-13 07:37:44,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:37:44,690 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757094100] [2021-06-13 07:37:44,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:37:44,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:37:44,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:44,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:44,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:44,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:37:44,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:44,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:44,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:37:44,870 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:37:44,870 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757094100] [2021-06-13 07:37:44,871 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757094100] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:37:44,871 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:37:44,871 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 07:37:44,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151792757] [2021-06-13 07:37:44,877 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 07:37:44,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:37:44,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 07:37:44,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 07:37:44,887 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 94 [2021-06-13 07:37:44,890 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 93 transitions, 189 flow. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:44,890 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:37:44,890 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 94 [2021-06-13 07:37:44,891 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:37:44,923 INFO L129 PetriNetUnfolder]: 8/180 cut-off events. [2021-06-13 07:37:44,923 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:37:44,924 INFO L84 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 180 events. 8/180 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 541 event pairs, 0 based on Foata normal form. 7/173 useless extension candidates. Maximal degree in co-relation 163. Up to 6 conditions per place. [2021-06-13 07:37:44,925 INFO L132 encePairwiseOnDemand]: 88/94 looper letters, 3 selfloop transitions, 3 changer transitions 0/91 dead transitions. [2021-06-13 07:37:44,926 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 91 transitions, 197 flow [2021-06-13 07:37:44,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 07:37:44,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 07:37:44,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 269 transitions. [2021-06-13 07:37:44,934 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9539007092198581 [2021-06-13 07:37:44,934 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 269 transitions. [2021-06-13 07:37:44,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 269 transitions. [2021-06-13 07:37:44,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:37:44,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 269 transitions. [2021-06-13 07:37:44,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:44,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:44,942 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:44,944 INFO L185 Difference]: Start difference. First operand has 91 places, 93 transitions, 189 flow. Second operand 3 states and 269 transitions. [2021-06-13 07:37:44,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 91 transitions, 197 flow [2021-06-13 07:37:44,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 91 transitions, 196 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-13 07:37:44,948 INFO L241 Difference]: Finished difference. Result has 93 places, 91 transitions, 200 flow [2021-06-13 07:37:44,950 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=93, PETRI_TRANSITIONS=91} [2021-06-13 07:37:44,950 INFO L335 CegarLoopForPetriNet]: 91 programPoint places, 2 predicate places. [2021-06-13 07:37:44,950 INFO L482 AbstractCegarLoop]: Abstraction has has 93 places, 91 transitions, 200 flow [2021-06-13 07:37:44,951 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:44,951 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:37:44,951 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:37:44,951 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-13 07:37:44,951 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:37:44,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:37:44,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1250469705, now seen corresponding path program 1 times [2021-06-13 07:37:44,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:37:44,952 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592038944] [2021-06-13 07:37:44,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:37:44,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:37:45,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:45,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:45,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:45,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:37:45,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:45,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-06-13 07:37:45,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:45,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-06-13 07:37:45,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:45,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:45,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:37:45,040 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:37:45,041 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592038944] [2021-06-13 07:37:45,041 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592038944] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:37:45,041 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:37:45,041 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-13 07:37:45,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179961984] [2021-06-13 07:37:45,042 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-13 07:37:45,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:37:45,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-13 07:37:45,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-13 07:37:45,043 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 94 [2021-06-13 07:37:45,044 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 91 transitions, 200 flow. Second operand has 5 states, 5 states have (on average 84.2) internal successors, (421), 5 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:45,044 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:37:45,044 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 94 [2021-06-13 07:37:45,044 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:37:45,134 INFO L129 PetriNetUnfolder]: 21/326 cut-off events. [2021-06-13 07:37:45,134 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-06-13 07:37:45,136 INFO L84 FinitePrefix]: Finished finitePrefix Result has 387 conditions, 326 events. 21/326 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1540 event pairs, 0 based on Foata normal form. 0/306 useless extension candidates. Maximal degree in co-relation 355. Up to 16 conditions per place. [2021-06-13 07:37:45,137 INFO L132 encePairwiseOnDemand]: 88/94 looper letters, 9 selfloop transitions, 7 changer transitions 1/100 dead transitions. [2021-06-13 07:37:45,137 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 100 transitions, 252 flow [2021-06-13 07:37:45,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 07:37:45,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-13 07:37:45,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 683 transitions. [2021-06-13 07:37:45,140 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9082446808510638 [2021-06-13 07:37:45,140 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 683 transitions. [2021-06-13 07:37:45,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 683 transitions. [2021-06-13 07:37:45,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:37:45,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 683 transitions. [2021-06-13 07:37:45,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 85.375) internal successors, (683), 8 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:45,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 94.0) internal successors, (846), 9 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:45,145 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 94.0) internal successors, (846), 9 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:45,146 INFO L185 Difference]: Start difference. First operand has 93 places, 91 transitions, 200 flow. Second operand 8 states and 683 transitions. [2021-06-13 07:37:45,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 100 transitions, 252 flow [2021-06-13 07:37:45,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 100 transitions, 246 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-13 07:37:45,148 INFO L241 Difference]: Finished difference. Result has 102 places, 96 transitions, 237 flow [2021-06-13 07:37:45,148 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=237, PETRI_PLACES=102, PETRI_TRANSITIONS=96} [2021-06-13 07:37:45,148 INFO L335 CegarLoopForPetriNet]: 91 programPoint places, 11 predicate places. [2021-06-13 07:37:45,148 INFO L482 AbstractCegarLoop]: Abstraction has has 102 places, 96 transitions, 237 flow [2021-06-13 07:37:45,149 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 84.2) internal successors, (421), 5 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:45,149 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:37:45,149 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:37:45,149 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-13 07:37:45,149 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:37:45,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:37:45,150 INFO L82 PathProgramCache]: Analyzing trace with hash -777799262, now seen corresponding path program 1 times [2021-06-13 07:37:45,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:37:45,150 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386316621] [2021-06-13 07:37:45,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:37:45,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:37:45,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:45,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:45,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:45,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:37:45,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:45,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:37:45,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:45,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:37:45,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:45,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:45,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:37:45,199 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:37:45,199 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386316621] [2021-06-13 07:37:45,200 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386316621] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:37:45,200 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:37:45,200 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-13 07:37:45,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176718477] [2021-06-13 07:37:45,200 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-13 07:37:45,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:37:45,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-13 07:37:45,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-13 07:37:45,202 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 94 [2021-06-13 07:37:45,202 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 96 transitions, 237 flow. Second operand has 5 states, 5 states have (on average 82.4) internal successors, (412), 5 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:45,202 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:37:45,202 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 94 [2021-06-13 07:37:45,202 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:37:45,297 INFO L129 PetriNetUnfolder]: 69/596 cut-off events. [2021-06-13 07:37:45,297 INFO L130 PetriNetUnfolder]: For 17/18 co-relation queries the response was YES. [2021-06-13 07:37:45,298 INFO L84 FinitePrefix]: Finished finitePrefix Result has 790 conditions, 596 events. 69/596 cut-off events. For 17/18 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3993 event pairs, 0 based on Foata normal form. 0/541 useless extension candidates. Maximal degree in co-relation 753. Up to 75 conditions per place. [2021-06-13 07:37:45,299 INFO L132 encePairwiseOnDemand]: 87/94 looper letters, 6 selfloop transitions, 2 changer transitions 42/108 dead transitions. [2021-06-13 07:37:45,299 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 108 transitions, 305 flow [2021-06-13 07:37:45,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 07:37:45,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-13 07:37:45,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 672 transitions. [2021-06-13 07:37:45,301 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8936170212765957 [2021-06-13 07:37:45,301 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 672 transitions. [2021-06-13 07:37:45,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 672 transitions. [2021-06-13 07:37:45,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:37:45,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 672 transitions. [2021-06-13 07:37:45,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 84.0) internal successors, (672), 8 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:45,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 94.0) internal successors, (846), 9 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:45,326 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 94.0) internal successors, (846), 9 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:45,326 INFO L185 Difference]: Start difference. First operand has 102 places, 96 transitions, 237 flow. Second operand 8 states and 672 transitions. [2021-06-13 07:37:45,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 108 transitions, 305 flow [2021-06-13 07:37:45,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 108 transitions, 305 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-06-13 07:37:45,329 INFO L241 Difference]: Finished difference. Result has 113 places, 66 transitions, 176 flow [2021-06-13 07:37:45,329 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=176, PETRI_PLACES=113, PETRI_TRANSITIONS=66} [2021-06-13 07:37:45,330 INFO L335 CegarLoopForPetriNet]: 91 programPoint places, 22 predicate places. [2021-06-13 07:37:45,330 INFO L482 AbstractCegarLoop]: Abstraction has has 113 places, 66 transitions, 176 flow [2021-06-13 07:37:45,330 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 82.4) internal successors, (412), 5 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:45,330 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:37:45,330 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:37:45,330 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-13 07:37:45,330 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:37:45,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:37:45,331 INFO L82 PathProgramCache]: Analyzing trace with hash 115110906, now seen corresponding path program 1 times [2021-06-13 07:37:45,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:37:45,331 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508829378] [2021-06-13 07:37:45,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:37:45,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:37:45,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:45,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:45,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:45,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 07:37:45,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:45,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 07:37:45,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:45,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 07:37:45,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:45,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:45,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:37:45,388 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:37:45,388 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508829378] [2021-06-13 07:37:45,389 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508829378] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:37:45,389 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:37:45,389 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-13 07:37:45,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58313387] [2021-06-13 07:37:45,389 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-13 07:37:45,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:37:45,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-13 07:37:45,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-13 07:37:45,391 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 94 [2021-06-13 07:37:45,391 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 66 transitions, 176 flow. Second operand has 5 states, 5 states have (on average 81.8) internal successors, (409), 5 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:45,391 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:37:45,391 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 94 [2021-06-13 07:37:45,391 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:37:45,463 INFO L129 PetriNetUnfolder]: 0/101 cut-off events. [2021-06-13 07:37:45,463 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2021-06-13 07:37:45,463 INFO L84 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 101 events. 0/101 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 173 event pairs, 0 based on Foata normal form. 1/101 useless extension candidates. Maximal degree in co-relation 0. Up to 16 conditions per place. [2021-06-13 07:37:45,463 INFO L132 encePairwiseOnDemand]: 89/94 looper letters, 9 selfloop transitions, 0 changer transitions 6/70 dead transitions. [2021-06-13 07:37:45,464 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 70 transitions, 212 flow [2021-06-13 07:37:45,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-13 07:37:45,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-06-13 07:37:45,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 495 transitions. [2021-06-13 07:37:45,465 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8776595744680851 [2021-06-13 07:37:45,465 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 495 transitions. [2021-06-13 07:37:45,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 495 transitions. [2021-06-13 07:37:45,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:37:45,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 495 transitions. [2021-06-13 07:37:45,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 82.5) internal successors, (495), 6 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:45,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 94.0) internal successors, (658), 7 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:45,467 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 94.0) internal successors, (658), 7 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:45,468 INFO L185 Difference]: Start difference. First operand has 113 places, 66 transitions, 176 flow. Second operand 6 states and 495 transitions. [2021-06-13 07:37:45,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 70 transitions, 212 flow [2021-06-13 07:37:45,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 70 transitions, 184 flow, removed 8 selfloop flow, removed 12 redundant places. [2021-06-13 07:37:45,470 INFO L241 Difference]: Finished difference. Result has 79 places, 64 transitions, 150 flow [2021-06-13 07:37:45,470 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=150, PETRI_PLACES=79, PETRI_TRANSITIONS=64} [2021-06-13 07:37:45,470 INFO L335 CegarLoopForPetriNet]: 91 programPoint places, -12 predicate places. [2021-06-13 07:37:45,470 INFO L482 AbstractCegarLoop]: Abstraction has has 79 places, 64 transitions, 150 flow [2021-06-13 07:37:45,471 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 81.8) internal successors, (409), 5 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:45,471 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:37:45,471 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:37:45,471 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-13 07:37:45,471 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:37:45,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:37:45,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1692871462, now seen corresponding path program 1 times [2021-06-13 07:37:45,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:37:45,472 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565229922] [2021-06-13 07:37:45,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:37:45,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:37:45,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:45,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:45,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:45,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:37:45,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:45,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:37:45,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:45,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:37:45,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:45,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:37:45,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:45,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-06-13 07:37:45,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:45,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:45,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:37:45,550 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:37:45,550 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565229922] [2021-06-13 07:37:45,551 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565229922] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:37:45,553 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:37:45,553 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:37:45,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741001755] [2021-06-13 07:37:45,554 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:37:45,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:37:45,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:37:45,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:37:45,558 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 94 [2021-06-13 07:37:45,560 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 64 transitions, 150 flow. Second operand has 7 states, 7 states have (on average 77.71428571428571) internal successors, (544), 7 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:45,560 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:37:45,560 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 94 [2021-06-13 07:37:45,560 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:37:45,627 INFO L129 PetriNetUnfolder]: 0/83 cut-off events. [2021-06-13 07:37:45,627 INFO L130 PetriNetUnfolder]: For 9/11 co-relation queries the response was YES. [2021-06-13 07:37:45,627 INFO L84 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 83 events. 0/83 cut-off events. For 9/11 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 8/91 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2021-06-13 07:37:45,628 INFO L132 encePairwiseOnDemand]: 89/94 looper letters, 8 selfloop transitions, 4 changer transitions 0/63 dead transitions. [2021-06-13 07:37:45,628 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 63 transitions, 170 flow [2021-06-13 07:37:45,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-13 07:37:45,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-06-13 07:37:45,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 472 transitions. [2021-06-13 07:37:45,629 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8368794326241135 [2021-06-13 07:37:45,630 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 472 transitions. [2021-06-13 07:37:45,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 472 transitions. [2021-06-13 07:37:45,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:37:45,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 472 transitions. [2021-06-13 07:37:45,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:45,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 94.0) internal successors, (658), 7 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:45,632 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 94.0) internal successors, (658), 7 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:45,632 INFO L185 Difference]: Start difference. First operand has 79 places, 64 transitions, 150 flow. Second operand 6 states and 472 transitions. [2021-06-13 07:37:45,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 63 transitions, 170 flow [2021-06-13 07:37:45,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 63 transitions, 160 flow, removed 4 selfloop flow, removed 5 redundant places. [2021-06-13 07:37:45,633 INFO L241 Difference]: Finished difference. Result has 74 places, 63 transitions, 144 flow [2021-06-13 07:37:45,633 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=144, PETRI_PLACES=74, PETRI_TRANSITIONS=63} [2021-06-13 07:37:45,634 INFO L335 CegarLoopForPetriNet]: 91 programPoint places, -17 predicate places. [2021-06-13 07:37:45,634 INFO L482 AbstractCegarLoop]: Abstraction has has 74 places, 63 transitions, 144 flow [2021-06-13 07:37:45,634 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 77.71428571428571) internal successors, (544), 7 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:45,634 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:37:45,634 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:37:45,636 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-13 07:37:45,636 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:37:45,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:37:45,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1577052678, now seen corresponding path program 2 times [2021-06-13 07:37:45,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:37:45,637 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325764852] [2021-06-13 07:37:45,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:37:45,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:37:45,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:45,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:45,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:45,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 07:37:45,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:45,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:37:45,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:45,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-06-13 07:37:45,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:45,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-06-13 07:37:45,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:45,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-06-13 07:37:45,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:45,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-06-13 07:37:45,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:45,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:45,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:37:45,742 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:37:45,742 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325764852] [2021-06-13 07:37:45,742 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325764852] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:37:45,742 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:37:45,742 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 07:37:45,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892462571] [2021-06-13 07:37:45,743 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 07:37:45,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:37:45,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 07:37:45,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-13 07:37:45,748 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 94 [2021-06-13 07:37:45,749 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 63 transitions, 144 flow. Second operand has 8 states, 8 states have (on average 75.875) internal successors, (607), 8 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:45,749 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:37:45,749 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 94 [2021-06-13 07:37:45,750 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:37:45,857 INFO L129 PetriNetUnfolder]: 0/69 cut-off events. [2021-06-13 07:37:45,857 INFO L130 PetriNetUnfolder]: For 3/9 co-relation queries the response was YES. [2021-06-13 07:37:45,857 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 69 events. 0/69 cut-off events. For 3/9 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 63 event pairs, 0 based on Foata normal form. 2/71 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2021-06-13 07:37:45,857 INFO L132 encePairwiseOnDemand]: 86/94 looper letters, 0 selfloop transitions, 0 changer transitions 68/68 dead transitions. [2021-06-13 07:37:45,857 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 68 transitions, 202 flow [2021-06-13 07:37:45,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 07:37:45,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 07:37:45,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 692 transitions. [2021-06-13 07:37:45,859 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.817966903073286 [2021-06-13 07:37:45,859 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 692 transitions. [2021-06-13 07:37:45,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 692 transitions. [2021-06-13 07:37:45,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:37:45,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 692 transitions. [2021-06-13 07:37:45,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 76.88888888888889) internal successors, (692), 9 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:45,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 94.0) internal successors, (940), 10 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:45,863 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 94.0) internal successors, (940), 10 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:45,863 INFO L185 Difference]: Start difference. First operand has 74 places, 63 transitions, 144 flow. Second operand 9 states and 692 transitions. [2021-06-13 07:37:45,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 68 transitions, 202 flow [2021-06-13 07:37:45,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 68 transitions, 193 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-06-13 07:37:45,865 INFO L241 Difference]: Finished difference. Result has 72 places, 0 transitions, 0 flow [2021-06-13 07:37:45,865 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=72, PETRI_TRANSITIONS=0} [2021-06-13 07:37:45,865 INFO L335 CegarLoopForPetriNet]: 91 programPoint places, -19 predicate places. [2021-06-13 07:37:45,865 INFO L482 AbstractCegarLoop]: Abstraction has has 72 places, 0 transitions, 0 flow [2021-06-13 07:37:45,865 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 75.875) internal successors, (607), 8 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:45,865 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-13 07:37:45,867 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-13 07:37:45,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.06 07:37:45 BasicIcfg [2021-06-13 07:37:45,869 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-13 07:37:45,870 INFO L168 Benchmark]: Toolchain (without parser) took 2087.86 ms. Allocated memory was 197.1 MB in the beginning and 237.0 MB in the end (delta: 39.8 MB). Free memory was 160.3 MB in the beginning and 128.9 MB in the end (delta: 31.4 MB). Peak memory consumption was 72.4 MB. Max. memory is 8.0 GB. [2021-06-13 07:37:45,870 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 197.1 MB. Free memory is still 178.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-13 07:37:45,872 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.24 ms. Allocated memory is still 197.1 MB. Free memory was 160.1 MB in the beginning and 158.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-06-13 07:37:45,872 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.45 ms. Allocated memory is still 197.1 MB. Free memory was 158.6 MB in the beginning and 156.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-13 07:37:45,873 INFO L168 Benchmark]: Boogie Preprocessor took 13.28 ms. Allocated memory is still 197.1 MB. Free memory was 156.6 MB in the beginning and 155.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-13 07:37:45,874 INFO L168 Benchmark]: RCFGBuilder took 362.10 ms. Allocated memory is still 197.1 MB. Free memory was 155.3 MB in the beginning and 128.7 MB in the end (delta: 26.6 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. [2021-06-13 07:37:45,875 INFO L168 Benchmark]: TraceAbstraction took 1389.52 ms. Allocated memory was 197.1 MB in the beginning and 237.0 MB in the end (delta: 39.8 MB). Free memory was 128.3 MB in the beginning and 128.9 MB in the end (delta: -648.1 kB). Peak memory consumption was 40.5 MB. Max. memory is 8.0 GB. [2021-06-13 07:37:45,878 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 197.1 MB. Free memory is still 178.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 293.24 ms. Allocated memory is still 197.1 MB. Free memory was 160.1 MB in the beginning and 158.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 25.45 ms. Allocated memory is still 197.1 MB. Free memory was 158.6 MB in the beginning and 156.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 13.28 ms. Allocated memory is still 197.1 MB. Free memory was 156.6 MB in the beginning and 155.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 362.10 ms. Allocated memory is still 197.1 MB. Free memory was 155.3 MB in the beginning and 128.7 MB in the end (delta: 26.6 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1389.52 ms. Allocated memory was 197.1 MB in the beginning and 237.0 MB in the end (delta: 39.8 MB). Free memory was 128.3 MB in the beginning and 128.9 MB in the end (delta: -648.1 kB). Peak memory consumption was 40.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 690]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 3 procedures, 113 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 20.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1280.4ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 579.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 68.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 59 SDtfs, 56 SDslu, 130 SDs, 0 SdLazy, 144 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 122.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 252.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=237occurred in iteration=2, InterpolantAutomatonStates: 40, 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: 15.5ms SsaConstructionTime, 82.5ms SatisfiabilityAnalysisTime, 371.4ms InterpolantComputationTime, 327 NumberOfCodeBlocks, 327 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 321 ConstructedInterpolants, 0 QuantifiedInterpolants, 590 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...