/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe025_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-13 07:33:41,786 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-13 07:33:41,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-13 07:33:41,809 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-13 07:33:41,816 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-13 07:33:41,817 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-13 07:33:41,818 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-13 07:33:41,818 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-13 07:33:41,819 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-13 07:33:41,820 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-13 07:33:41,821 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-13 07:33:41,822 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-13 07:33:41,823 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-13 07:33:41,824 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-13 07:33:41,824 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-13 07:33:41,825 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-13 07:33:41,827 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-13 07:33:41,854 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-13 07:33:41,855 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-13 07:33:41,855 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-13 07:33:41,858 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 07:33:41,889 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-13 07:33:41,890 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-13 07:33:41,890 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-13 07:33:41,891 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-13 07:33:41,891 INFO L138 SettingsManager]: * Use SBE=true [2021-06-13 07:33:41,891 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-13 07:33:41,891 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-13 07:33:41,891 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-13 07:33:41,891 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-13 07:33:41,891 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-13 07:33:41,891 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-13 07:33:41,891 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-13 07:33:41,891 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-13 07:33:41,892 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-13 07:33:41,892 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-13 07:33:41,892 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-13 07:33:41,892 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-13 07:33:41,892 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-13 07:33:41,892 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-13 07:33:41,892 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-13 07:33:41,892 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-13 07:33:41,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 07:33:41,892 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-13 07:33:41,893 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-13 07:33:41,893 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-13 07:33:41,893 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-13 07:33:41,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-13 07:33:41,893 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-13 07:33:41,893 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-13 07:33:41,893 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-13 07:33:42,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-13 07:33:42,127 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-13 07:33:42,129 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-13 07:33:42,129 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-13 07:33:42,131 INFO L275 PluginConnector]: CDTParser initialized [2021-06-13 07:33:42,132 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_tso.opt.i [2021-06-13 07:33:42,174 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ae446750/7c6c58a1b111477f846b6f23b931912a/FLAGca17a0244 [2021-06-13 07:33:42,532 INFO L306 CDTParser]: Found 1 translation units. [2021-06-13 07:33:42,533 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_tso.opt.i [2021-06-13 07:33:42,545 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ae446750/7c6c58a1b111477f846b6f23b931912a/FLAGca17a0244 [2021-06-13 07:33:42,906 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ae446750/7c6c58a1b111477f846b6f23b931912a [2021-06-13 07:33:42,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-13 07:33:42,908 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-13 07:33:42,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-13 07:33:42,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-13 07:33:42,915 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-13 07:33:42,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 07:33:42" (1/1) ... [2021-06-13 07:33:42,916 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33b5a559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:33:42, skipping insertion in model container [2021-06-13 07:33:42,916 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 07:33:42" (1/1) ... [2021-06-13 07:33:42,922 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-13 07:33:42,959 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-13 07:33:43,065 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_tso.opt.i[949,962] [2021-06-13 07:33:43,147 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 07:33:43,151 INFO L203 MainTranslator]: Completed pre-run [2021-06-13 07:33:43,158 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_tso.opt.i[949,962] [2021-06-13 07:33:43,175 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 07:33:43,236 INFO L208 MainTranslator]: Completed translation [2021-06-13 07:33:43,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:33:43 WrapperNode [2021-06-13 07:33:43,236 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-13 07:33:43,238 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-13 07:33:43,238 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-13 07:33:43,238 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-13 07:33:43,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:33:43" (1/1) ... [2021-06-13 07:33:43,264 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:33:43" (1/1) ... [2021-06-13 07:33:43,281 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-13 07:33:43,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-13 07:33:43,282 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-13 07:33:43,282 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-13 07:33:43,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:33:43" (1/1) ... [2021-06-13 07:33:43,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:33:43" (1/1) ... [2021-06-13 07:33:43,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:33:43" (1/1) ... [2021-06-13 07:33:43,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:33:43" (1/1) ... [2021-06-13 07:33:43,303 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:33:43" (1/1) ... [2021-06-13 07:33:43,304 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:33:43" (1/1) ... [2021-06-13 07:33:43,305 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:33:43" (1/1) ... [2021-06-13 07:33:43,306 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-13 07:33:43,307 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-13 07:33:43,307 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-13 07:33:43,307 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-13 07:33:43,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:33:43" (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) [2021-06-13 07:33:43,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-13 07:33:43,352 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-13 07:33:43,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-13 07:33:43,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-13 07:33:43,353 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-13 07:33:43,353 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-13 07:33:43,353 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-13 07:33:43,354 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-13 07:33:43,354 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-13 07:33:43,354 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-13 07:33:43,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-13 07:33:43,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-13 07:33:43,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-13 07:33:43,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-13 07:33:43,355 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 07:33:43,654 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-13 07:33:43,654 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-13 07:33:43,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 07:33:43 BoogieIcfgContainer [2021-06-13 07:33:43,655 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-13 07:33:43,656 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-13 07:33:43,656 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-13 07:33:43,658 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-13 07:33:43,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.06 07:33:42" (1/3) ... [2021-06-13 07:33:43,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a610a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 07:33:43, skipping insertion in model container [2021-06-13 07:33:43,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:33:43" (2/3) ... [2021-06-13 07:33:43,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a610a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 07:33:43, skipping insertion in model container [2021-06-13 07:33:43,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 07:33:43" (3/3) ... [2021-06-13 07:33:43,660 INFO L111 eAbstractionObserver]: Analyzing ICFG safe025_tso.opt.i [2021-06-13 07:33:43,664 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-13 07:33:43,664 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-13 07:33:43,664 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-13 07:33:43,685 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:43,686 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:43,686 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:43,686 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:43,686 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:43,686 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:43,686 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:43,686 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:43,687 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:43,687 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:43,687 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:43,687 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:43,687 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:43,687 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:43,687 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:43,688 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:43,688 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:43,688 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:43,688 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:43,688 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:43,688 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:43,688 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:43,688 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:43,689 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:43,689 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:43,689 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:43,689 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:43,689 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:43,689 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:43,689 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:43,689 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:43,689 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:43,690 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:43,690 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:43,690 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:43,690 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:43,691 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:43,691 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:43,692 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:43,692 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:43,695 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:43,695 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:43,695 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:43,696 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:43,697 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:43,697 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:43,697 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:43,698 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:43,699 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-13 07:33:43,713 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-13 07:33:43,726 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 07:33:43,726 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 07:33:43,726 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 07:33:43,726 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 07:33:43,726 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 07:33:43,726 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 07:33:43,726 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 07:33:43,726 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-13 07:33:43,733 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2021-06-13 07:33:43,757 INFO L129 PetriNetUnfolder]: 2/81 cut-off events. [2021-06-13 07:33:43,757 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:33:43,760 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-06-13 07:33:43,760 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 84 transitions, 183 flow [2021-06-13 07:33:43,763 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 69 transitions, 147 flow [2021-06-13 07:33:43,781 INFO L129 PetriNetUnfolder]: 1/68 cut-off events. [2021-06-13 07:33:43,781 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:33:43,781 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:33:43,782 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] [2021-06-13 07:33:43,782 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:33:43,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:33:43,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1943773822, now seen corresponding path program 1 times [2021-06-13 07:33:43,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:33:43,794 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762842564] [2021-06-13 07:33:43,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:33:43,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:33:43,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:43,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:33:43,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:43,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:33:44,010 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:33:44,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:33:44,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:44,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:33:44,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:44,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:33:44,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:44,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:33:44,073 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 07:33:44,074 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:33:44,074 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762842564] [2021-06-13 07:33:44,074 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762842564] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:33:44,074 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:33:44,075 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 07:33:44,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293889051] [2021-06-13 07:33:44,080 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-13 07:33:44,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:33:44,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-13 07:33:44,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-13 07:33:44,091 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 84 [2021-06-13 07:33:44,094 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 69 transitions, 147 flow. Second operand has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 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 07:33:44,094 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:33:44,094 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 84 [2021-06-13 07:33:44,095 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:33:44,211 INFO L129 PetriNetUnfolder]: 3/91 cut-off events. [2021-06-13 07:33:44,211 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:33:44,212 INFO L84 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 91 events. 3/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 114 event pairs, 0 based on Foata normal form. 4/94 useless extension candidates. Maximal degree in co-relation 90. Up to 7 conditions per place. [2021-06-13 07:33:44,213 INFO L132 encePairwiseOnDemand]: 77/84 looper letters, 6 selfloop transitions, 2 changer transitions 11/78 dead transitions. [2021-06-13 07:33:44,213 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 78 transitions, 201 flow [2021-06-13 07:33:44,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 07:33:44,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 07:33:44,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 670 transitions. [2021-06-13 07:33:44,228 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8862433862433863 [2021-06-13 07:33:44,229 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 670 transitions. [2021-06-13 07:33:44,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 670 transitions. [2021-06-13 07:33:44,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:33:44,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 670 transitions. [2021-06-13 07:33:44,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.44444444444444) internal successors, (670), 9 states have internal predecessors, (670), 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 07:33:44,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 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 07:33:44,244 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 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 07:33:44,245 INFO L185 Difference]: Start difference. First operand has 78 places, 69 transitions, 147 flow. Second operand 9 states and 670 transitions. [2021-06-13 07:33:44,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 78 transitions, 201 flow [2021-06-13 07:33:44,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 78 transitions, 198 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-06-13 07:33:44,250 INFO L241 Difference]: Finished difference. Result has 90 places, 67 transitions, 160 flow [2021-06-13 07:33:44,251 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=160, PETRI_PLACES=90, PETRI_TRANSITIONS=67} [2021-06-13 07:33:44,252 INFO L335 CegarLoopForPetriNet]: 78 programPoint places, 12 predicate places. [2021-06-13 07:33:44,252 INFO L482 AbstractCegarLoop]: Abstraction has has 90 places, 67 transitions, 160 flow [2021-06-13 07:33:44,252 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 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 07:33:44,252 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:33:44,252 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] [2021-06-13 07:33:44,253 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-13 07:33:44,253 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:33:44,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:33:44,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1169777821, now seen corresponding path program 1 times [2021-06-13 07:33:44,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:33:44,254 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817627968] [2021-06-13 07:33:44,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:33:44,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:33:44,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:44,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:33:44,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:44,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:33:44,388 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-13 07:33:44,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 07:33:44,400 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:33:44,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:33:44,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:44,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:33:44,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:44,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:33:44,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:44,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:33:44,431 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 07:33:44,431 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:33:44,431 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817627968] [2021-06-13 07:33:44,431 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817627968] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:33:44,431 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:33:44,431 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:33:44,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48629865] [2021-06-13 07:33:44,433 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:33:44,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:33:44,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:33:44,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:33:44,435 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 84 [2021-06-13 07:33:44,436 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 67 transitions, 160 flow. Second operand has 7 states, 7 states have (on average 66.57142857142857) internal successors, (466), 7 states have internal predecessors, (466), 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 07:33:44,436 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:33:44,436 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 84 [2021-06-13 07:33:44,436 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:33:44,728 INFO L129 PetriNetUnfolder]: 185/511 cut-off events. [2021-06-13 07:33:44,728 INFO L130 PetriNetUnfolder]: For 149/213 co-relation queries the response was YES. [2021-06-13 07:33:44,734 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1034 conditions, 511 events. 185/511 cut-off events. For 149/213 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2612 event pairs, 12 based on Foata normal form. 16/513 useless extension candidates. Maximal degree in co-relation 994. Up to 126 conditions per place. [2021-06-13 07:33:44,736 INFO L132 encePairwiseOnDemand]: 72/84 looper letters, 18 selfloop transitions, 8 changer transitions 38/116 dead transitions. [2021-06-13 07:33:44,736 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 116 transitions, 432 flow [2021-06-13 07:33:44,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 07:33:44,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-13 07:33:44,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 912 transitions. [2021-06-13 07:33:44,741 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8351648351648352 [2021-06-13 07:33:44,741 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 912 transitions. [2021-06-13 07:33:44,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 912 transitions. [2021-06-13 07:33:44,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:33:44,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 912 transitions. [2021-06-13 07:33:44,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 70.15384615384616) internal successors, (912), 13 states have internal predecessors, (912), 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 07:33:44,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 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 07:33:44,747 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 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 07:33:44,748 INFO L185 Difference]: Start difference. First operand has 90 places, 67 transitions, 160 flow. Second operand 13 states and 912 transitions. [2021-06-13 07:33:44,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 116 transitions, 432 flow [2021-06-13 07:33:44,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 116 transitions, 376 flow, removed 24 selfloop flow, removed 8 redundant places. [2021-06-13 07:33:44,753 INFO L241 Difference]: Finished difference. Result has 99 places, 71 transitions, 233 flow [2021-06-13 07:33:44,754 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=233, PETRI_PLACES=99, PETRI_TRANSITIONS=71} [2021-06-13 07:33:44,754 INFO L335 CegarLoopForPetriNet]: 78 programPoint places, 21 predicate places. [2021-06-13 07:33:44,754 INFO L482 AbstractCegarLoop]: Abstraction has has 99 places, 71 transitions, 233 flow [2021-06-13 07:33:44,754 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 66.57142857142857) internal successors, (466), 7 states have internal predecessors, (466), 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 07:33:44,754 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:33:44,755 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] [2021-06-13 07:33:44,755 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-13 07:33:44,755 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:33:44,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:33:44,755 INFO L82 PathProgramCache]: Analyzing trace with hash 719910558, now seen corresponding path program 1 times [2021-06-13 07:33:44,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:33:44,756 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729597968] [2021-06-13 07:33:44,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:33:44,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:33:44,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:44,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:33:44,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:44,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:33:44,794 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-13 07:33:44,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 07:33:44,802 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:33:44,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:33:44,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:44,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:33:44,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:44,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:33:44,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:44,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:33:44,837 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 07:33:44,837 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:33:44,838 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729597968] [2021-06-13 07:33:44,838 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729597968] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:33:44,838 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:33:44,838 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:33:44,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607753891] [2021-06-13 07:33:44,839 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:33:44,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:33:44,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:33:44,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:33:44,842 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 84 [2021-06-13 07:33:44,843 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 71 transitions, 233 flow. Second operand has 7 states, 7 states have (on average 66.71428571428571) internal successors, (467), 7 states have internal predecessors, (467), 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 07:33:44,845 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:33:44,845 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 84 [2021-06-13 07:33:44,845 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:33:45,079 INFO L129 PetriNetUnfolder]: 99/356 cut-off events. [2021-06-13 07:33:45,083 INFO L130 PetriNetUnfolder]: For 763/1139 co-relation queries the response was YES. [2021-06-13 07:33:45,085 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1132 conditions, 356 events. 99/356 cut-off events. For 763/1139 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1678 event pairs, 10 based on Foata normal form. 15/364 useless extension candidates. Maximal degree in co-relation 1082. Up to 100 conditions per place. [2021-06-13 07:33:45,086 INFO L132 encePairwiseOnDemand]: 72/84 looper letters, 19 selfloop transitions, 13 changer transitions 34/118 dead transitions. [2021-06-13 07:33:45,086 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 118 transitions, 703 flow [2021-06-13 07:33:45,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 07:33:45,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-13 07:33:45,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 902 transitions. [2021-06-13 07:33:45,089 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.826007326007326 [2021-06-13 07:33:45,089 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 902 transitions. [2021-06-13 07:33:45,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 902 transitions. [2021-06-13 07:33:45,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:33:45,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 902 transitions. [2021-06-13 07:33:45,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 69.38461538461539) internal successors, (902), 13 states have internal predecessors, (902), 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 07:33:45,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 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 07:33:45,093 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 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 07:33:45,093 INFO L185 Difference]: Start difference. First operand has 99 places, 71 transitions, 233 flow. Second operand 13 states and 902 transitions. [2021-06-13 07:33:45,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 118 transitions, 703 flow [2021-06-13 07:33:45,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 118 transitions, 652 flow, removed 24 selfloop flow, removed 4 redundant places. [2021-06-13 07:33:45,099 INFO L241 Difference]: Finished difference. Result has 110 places, 78 transitions, 364 flow [2021-06-13 07:33:45,100 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=364, PETRI_PLACES=110, PETRI_TRANSITIONS=78} [2021-06-13 07:33:45,100 INFO L335 CegarLoopForPetriNet]: 78 programPoint places, 32 predicate places. [2021-06-13 07:33:45,100 INFO L482 AbstractCegarLoop]: Abstraction has has 110 places, 78 transitions, 364 flow [2021-06-13 07:33:45,100 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 66.71428571428571) internal successors, (467), 7 states have internal predecessors, (467), 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 07:33:45,100 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:33:45,100 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] [2021-06-13 07:33:45,100 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-13 07:33:45,101 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:33:45,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:33:45,102 INFO L82 PathProgramCache]: Analyzing trace with hash -695367556, now seen corresponding path program 1 times [2021-06-13 07:33:45,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:33:45,102 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017131099] [2021-06-13 07:33:45,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:33:45,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:33:45,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:45,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:33:45,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:45,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:33:45,164 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-13 07:33:45,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 07:33:45,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:45,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:33:45,184 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 07:33:45,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:33:45,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:45,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:33:45,194 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 07:33:45,194 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:33:45,194 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017131099] [2021-06-13 07:33:45,194 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017131099] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:33:45,194 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:33:45,194 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 07:33:45,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801512004] [2021-06-13 07:33:45,195 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-13 07:33:45,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:33:45,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-13 07:33:45,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-13 07:33:45,196 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-06-13 07:33:45,196 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 78 transitions, 364 flow. Second operand has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 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 07:33:45,196 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:33:45,196 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-06-13 07:33:45,196 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:33:45,364 INFO L129 PetriNetUnfolder]: 362/977 cut-off events. [2021-06-13 07:33:45,364 INFO L130 PetriNetUnfolder]: For 818/876 co-relation queries the response was YES. [2021-06-13 07:33:45,369 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2184 conditions, 977 events. 362/977 cut-off events. For 818/876 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 7454 event pairs, 22 based on Foata normal form. 44/931 useless extension candidates. Maximal degree in co-relation 2123. Up to 311 conditions per place. [2021-06-13 07:33:45,373 INFO L132 encePairwiseOnDemand]: 75/84 looper letters, 19 selfloop transitions, 16 changer transitions 0/103 dead transitions. [2021-06-13 07:33:45,373 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 103 transitions, 484 flow [2021-06-13 07:33:45,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 07:33:45,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 07:33:45,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 667 transitions. [2021-06-13 07:33:45,378 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8822751322751323 [2021-06-13 07:33:45,378 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 667 transitions. [2021-06-13 07:33:45,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 667 transitions. [2021-06-13 07:33:45,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:33:45,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 667 transitions. [2021-06-13 07:33:45,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.11111111111111) internal successors, (667), 9 states have internal predecessors, (667), 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 07:33:45,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 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 07:33:45,381 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 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 07:33:45,381 INFO L185 Difference]: Start difference. First operand has 110 places, 78 transitions, 364 flow. Second operand 9 states and 667 transitions. [2021-06-13 07:33:45,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 103 transitions, 484 flow [2021-06-13 07:33:45,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 103 transitions, 450 flow, removed 15 selfloop flow, removed 7 redundant places. [2021-06-13 07:33:45,388 INFO L241 Difference]: Finished difference. Result has 107 places, 92 transitions, 441 flow [2021-06-13 07:33:45,388 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=441, PETRI_PLACES=107, PETRI_TRANSITIONS=92} [2021-06-13 07:33:45,389 INFO L335 CegarLoopForPetriNet]: 78 programPoint places, 29 predicate places. [2021-06-13 07:33:45,389 INFO L482 AbstractCegarLoop]: Abstraction has has 107 places, 92 transitions, 441 flow [2021-06-13 07:33:45,389 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 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 07:33:45,389 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:33:45,389 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] [2021-06-13 07:33:45,390 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-13 07:33:45,390 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:33:45,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:33:45,390 INFO L82 PathProgramCache]: Analyzing trace with hash -649257177, now seen corresponding path program 1 times [2021-06-13 07:33:45,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:33:45,390 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951842213] [2021-06-13 07:33:45,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:33:45,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:33:45,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:45,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:33:45,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:45,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:33:45,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:45,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:33:45,442 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-13 07:33:45,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 07:33:45,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:45,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:33:45,462 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 07:33:45,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:33:45,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:45,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:33:45,472 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 07:33:45,472 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:33:45,472 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951842213] [2021-06-13 07:33:45,472 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951842213] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:33:45,472 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:33:45,472 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:33:45,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678276279] [2021-06-13 07:33:45,473 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:33:45,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:33:45,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:33:45,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:33:45,474 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-06-13 07:33:45,474 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 92 transitions, 441 flow. Second operand has 7 states, 7 states have (on average 71.14285714285714) internal successors, (498), 7 states have internal predecessors, (498), 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 07:33:45,474 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:33:45,474 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-06-13 07:33:45,474 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:33:45,686 INFO L129 PetriNetUnfolder]: 330/953 cut-off events. [2021-06-13 07:33:45,686 INFO L130 PetriNetUnfolder]: For 2181/2713 co-relation queries the response was YES. [2021-06-13 07:33:45,692 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3237 conditions, 953 events. 330/953 cut-off events. For 2181/2713 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 7632 event pairs, 6 based on Foata normal form. 147/1016 useless extension candidates. Maximal degree in co-relation 3199. Up to 336 conditions per place. [2021-06-13 07:33:45,695 INFO L132 encePairwiseOnDemand]: 75/84 looper letters, 15 selfloop transitions, 31 changer transitions 6/120 dead transitions. [2021-06-13 07:33:45,695 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 120 transitions, 726 flow [2021-06-13 07:33:45,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-13 07:33:45,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-06-13 07:33:45,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 890 transitions. [2021-06-13 07:33:45,698 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8829365079365079 [2021-06-13 07:33:45,698 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 890 transitions. [2021-06-13 07:33:45,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 890 transitions. [2021-06-13 07:33:45,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:33:45,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 890 transitions. [2021-06-13 07:33:45,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 74.16666666666667) internal successors, (890), 12 states have internal predecessors, (890), 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 07:33:45,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 84.0) internal successors, (1092), 13 states have internal predecessors, (1092), 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 07:33:45,703 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 84.0) internal successors, (1092), 13 states have internal predecessors, (1092), 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 07:33:45,703 INFO L185 Difference]: Start difference. First operand has 107 places, 92 transitions, 441 flow. Second operand 12 states and 890 transitions. [2021-06-13 07:33:45,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 120 transitions, 726 flow [2021-06-13 07:33:45,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 120 transitions, 712 flow, removed 6 selfloop flow, removed 7 redundant places. [2021-06-13 07:33:45,709 INFO L241 Difference]: Finished difference. Result has 114 places, 111 transitions, 657 flow [2021-06-13 07:33:45,709 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=657, PETRI_PLACES=114, PETRI_TRANSITIONS=111} [2021-06-13 07:33:45,709 INFO L335 CegarLoopForPetriNet]: 78 programPoint places, 36 predicate places. [2021-06-13 07:33:45,709 INFO L482 AbstractCegarLoop]: Abstraction has has 114 places, 111 transitions, 657 flow [2021-06-13 07:33:45,709 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 71.14285714285714) internal successors, (498), 7 states have internal predecessors, (498), 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 07:33:45,710 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:33:45,710 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] [2021-06-13 07:33:45,710 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-13 07:33:45,710 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:33:45,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:33:45,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1811758650, now seen corresponding path program 1 times [2021-06-13 07:33:45,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:33:45,710 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975676798] [2021-06-13 07:33:45,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:33:45,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:33:45,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:45,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:33:45,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:45,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:33:45,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:45,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:33:45,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:45,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:33:45,782 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-13 07:33:45,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 07:33:45,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:45,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:33:45,806 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 07:33:45,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:33:45,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:45,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:33:45,814 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 07:33:45,814 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:33:45,814 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975676798] [2021-06-13 07:33:45,814 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975676798] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:33:45,815 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:33:45,815 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 07:33:45,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007273966] [2021-06-13 07:33:45,815 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 07:33:45,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:33:45,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 07:33:45,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-13 07:33:45,816 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-06-13 07:33:45,816 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 111 transitions, 657 flow. Second operand has 8 states, 8 states have (on average 71.125) internal successors, (569), 8 states have internal predecessors, (569), 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 07:33:45,817 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:33:45,817 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-06-13 07:33:45,817 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:33:46,079 INFO L129 PetriNetUnfolder]: 281/878 cut-off events. [2021-06-13 07:33:46,079 INFO L130 PetriNetUnfolder]: For 3098/3766 co-relation queries the response was YES. [2021-06-13 07:33:46,083 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3504 conditions, 878 events. 281/878 cut-off events. For 3098/3766 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 7285 event pairs, 2 based on Foata normal form. 156/951 useless extension candidates. Maximal degree in co-relation 3442. Up to 292 conditions per place. [2021-06-13 07:33:46,085 INFO L132 encePairwiseOnDemand]: 75/84 looper letters, 10 selfloop transitions, 36 changer transitions 16/130 dead transitions. [2021-06-13 07:33:46,085 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 130 transitions, 911 flow [2021-06-13 07:33:46,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-13 07:33:46,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-06-13 07:33:46,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1101 transitions. [2021-06-13 07:33:46,088 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8738095238095238 [2021-06-13 07:33:46,088 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1101 transitions. [2021-06-13 07:33:46,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1101 transitions. [2021-06-13 07:33:46,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:33:46,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1101 transitions. [2021-06-13 07:33:46,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 73.4) internal successors, (1101), 15 states have internal predecessors, (1101), 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 07:33:46,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 84.0) internal successors, (1344), 16 states have internal predecessors, (1344), 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 07:33:46,092 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 84.0) internal successors, (1344), 16 states have internal predecessors, (1344), 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 07:33:46,092 INFO L185 Difference]: Start difference. First operand has 114 places, 111 transitions, 657 flow. Second operand 15 states and 1101 transitions. [2021-06-13 07:33:46,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 130 transitions, 911 flow [2021-06-13 07:33:46,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 130 transitions, 735 flow, removed 69 selfloop flow, removed 9 redundant places. [2021-06-13 07:33:46,108 INFO L241 Difference]: Finished difference. Result has 125 places, 111 transitions, 625 flow [2021-06-13 07:33:46,108 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=625, PETRI_PLACES=125, PETRI_TRANSITIONS=111} [2021-06-13 07:33:46,108 INFO L335 CegarLoopForPetriNet]: 78 programPoint places, 47 predicate places. [2021-06-13 07:33:46,108 INFO L482 AbstractCegarLoop]: Abstraction has has 125 places, 111 transitions, 625 flow [2021-06-13 07:33:46,109 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 71.125) internal successors, (569), 8 states have internal predecessors, (569), 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 07:33:46,109 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:33:46,109 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 07:33:46,109 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-13 07:33:46,109 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:33:46,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:33:46,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1870169686, now seen corresponding path program 1 times [2021-06-13 07:33:46,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:33:46,110 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247760302] [2021-06-13 07:33:46,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:33:46,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:33:46,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:46,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:33:46,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:46,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:33:46,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:46,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:33:46,148 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:33:46,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:33:46,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:46,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:33:46,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:46,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:33:46,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:46,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:33:46,176 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 07:33:46,176 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:33:46,176 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247760302] [2021-06-13 07:33:46,176 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247760302] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:33:46,176 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:33:46,176 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:33:46,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404695072] [2021-06-13 07:33:46,176 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:33:46,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:33:46,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:33:46,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:33:46,177 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-06-13 07:33:46,178 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 111 transitions, 625 flow. Second operand has 7 states, 7 states have (on average 71.42857142857143) internal successors, (500), 7 states have internal predecessors, (500), 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 07:33:46,178 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:33:46,178 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-06-13 07:33:46,178 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:33:46,299 INFO L129 PetriNetUnfolder]: 303/1120 cut-off events. [2021-06-13 07:33:46,299 INFO L130 PetriNetUnfolder]: For 2466/2566 co-relation queries the response was YES. [2021-06-13 07:33:46,304 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3416 conditions, 1120 events. 303/1120 cut-off events. For 2466/2566 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 10562 event pairs, 2 based on Foata normal form. 1/1031 useless extension candidates. Maximal degree in co-relation 3351. Up to 161 conditions per place. [2021-06-13 07:33:46,306 INFO L132 encePairwiseOnDemand]: 78/84 looper letters, 10 selfloop transitions, 1 changer transitions 15/117 dead transitions. [2021-06-13 07:33:46,306 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 117 transitions, 693 flow [2021-06-13 07:33:46,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-13 07:33:46,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-13 07:33:46,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 506 transitions. [2021-06-13 07:33:46,308 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8605442176870748 [2021-06-13 07:33:46,308 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 506 transitions. [2021-06-13 07:33:46,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 506 transitions. [2021-06-13 07:33:46,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:33:46,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 506 transitions. [2021-06-13 07:33:46,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 72.28571428571429) internal successors, (506), 7 states have internal predecessors, (506), 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 07:33:46,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 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 07:33:46,310 INFO L81 ComplementDD]: Finished complementDD. Result has 8 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 07:33:46,310 INFO L185 Difference]: Start difference. First operand has 125 places, 111 transitions, 625 flow. Second operand 7 states and 506 transitions. [2021-06-13 07:33:46,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 117 transitions, 693 flow [2021-06-13 07:33:46,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 117 transitions, 618 flow, removed 13 selfloop flow, removed 14 redundant places. [2021-06-13 07:33:46,324 INFO L241 Difference]: Finished difference. Result has 120 places, 102 transitions, 501 flow [2021-06-13 07:33:46,325 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=501, PETRI_PLACES=120, PETRI_TRANSITIONS=102} [2021-06-13 07:33:46,325 INFO L335 CegarLoopForPetriNet]: 78 programPoint places, 42 predicate places. [2021-06-13 07:33:46,325 INFO L482 AbstractCegarLoop]: Abstraction has has 120 places, 102 transitions, 501 flow [2021-06-13 07:33:46,325 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 71.42857142857143) internal successors, (500), 7 states have internal predecessors, (500), 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 07:33:46,325 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:33:46,325 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 07:33:46,325 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-13 07:33:46,325 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:33:46,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:33:46,326 INFO L82 PathProgramCache]: Analyzing trace with hash 173547328, now seen corresponding path program 2 times [2021-06-13 07:33:46,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:33:46,326 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822108071] [2021-06-13 07:33:46,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:33:46,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:33:46,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:46,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:33:46,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:46,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:33:46,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:46,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:33:46,378 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-13 07:33:46,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 07:33:46,386 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:33:46,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:33:46,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:46,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:33:46,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:46,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:33:46,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:46,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:33:46,414 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 07:33:46,414 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:33:46,414 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822108071] [2021-06-13 07:33:46,415 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822108071] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:33:46,415 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:33:46,415 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 07:33:46,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295732411] [2021-06-13 07:33:46,415 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 07:33:46,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:33:46,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 07:33:46,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-13 07:33:46,416 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 84 [2021-06-13 07:33:46,416 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 102 transitions, 501 flow. Second operand has 8 states, 8 states have (on average 66.875) internal successors, (535), 8 states have internal predecessors, (535), 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 07:33:46,417 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:33:46,417 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 84 [2021-06-13 07:33:46,417 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:33:46,539 INFO L129 PetriNetUnfolder]: 124/672 cut-off events. [2021-06-13 07:33:46,540 INFO L130 PetriNetUnfolder]: For 937/992 co-relation queries the response was YES. [2021-06-13 07:33:46,541 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1866 conditions, 672 events. 124/672 cut-off events. For 937/992 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5535 event pairs, 0 based on Foata normal form. 8/643 useless extension candidates. Maximal degree in co-relation 1839. Up to 87 conditions per place. [2021-06-13 07:33:46,542 INFO L132 encePairwiseOnDemand]: 73/84 looper letters, 8 selfloop transitions, 7 changer transitions 38/111 dead transitions. [2021-06-13 07:33:46,542 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 111 transitions, 613 flow [2021-06-13 07:33:46,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 07:33:46,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 07:33:46,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 612 transitions. [2021-06-13 07:33:46,543 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8095238095238095 [2021-06-13 07:33:46,544 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 612 transitions. [2021-06-13 07:33:46,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 612 transitions. [2021-06-13 07:33:46,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:33:46,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 612 transitions. [2021-06-13 07:33:46,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 68.0) internal successors, (612), 9 states have internal predecessors, (612), 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 07:33:46,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 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 07:33:46,546 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 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 07:33:46,546 INFO L185 Difference]: Start difference. First operand has 120 places, 102 transitions, 501 flow. Second operand 9 states and 612 transitions. [2021-06-13 07:33:46,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 111 transitions, 613 flow [2021-06-13 07:33:46,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 111 transitions, 594 flow, removed 9 selfloop flow, removed 5 redundant places. [2021-06-13 07:33:46,551 INFO L241 Difference]: Finished difference. Result has 123 places, 73 transitions, 298 flow [2021-06-13 07:33:46,552 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=298, PETRI_PLACES=123, PETRI_TRANSITIONS=73} [2021-06-13 07:33:46,552 INFO L335 CegarLoopForPetriNet]: 78 programPoint places, 45 predicate places. [2021-06-13 07:33:46,552 INFO L482 AbstractCegarLoop]: Abstraction has has 123 places, 73 transitions, 298 flow [2021-06-13 07:33:46,552 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 66.875) internal successors, (535), 8 states have internal predecessors, (535), 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 07:33:46,552 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:33:46,552 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 07:33:46,552 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-13 07:33:46,552 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:33:46,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:33:46,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1665803234, now seen corresponding path program 3 times [2021-06-13 07:33:46,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:33:46,553 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127801021] [2021-06-13 07:33:46,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:33:46,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:33:46,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:46,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:33:46,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:46,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:33:46,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:46,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:33:46,603 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-13 07:33:46,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 07:33:46,611 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:33:46,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:33:46,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:46,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:33:46,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:46,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:33:46,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:46,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:33:46,641 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 07:33:46,641 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:33:46,641 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127801021] [2021-06-13 07:33:46,641 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127801021] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:33:46,641 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:33:46,641 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 07:33:46,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659974865] [2021-06-13 07:33:46,642 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 07:33:46,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:33:46,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 07:33:46,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-13 07:33:46,643 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 84 [2021-06-13 07:33:46,643 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 73 transitions, 298 flow. Second operand has 8 states, 8 states have (on average 66.875) internal successors, (535), 8 states have internal predecessors, (535), 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 07:33:46,643 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:33:46,643 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 84 [2021-06-13 07:33:46,643 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:33:46,691 INFO L129 PetriNetUnfolder]: 6/101 cut-off events. [2021-06-13 07:33:46,691 INFO L130 PetriNetUnfolder]: For 93/96 co-relation queries the response was YES. [2021-06-13 07:33:46,692 INFO L84 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 101 events. 6/101 cut-off events. For 93/96 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 164 event pairs, 0 based on Foata normal form. 2/102 useless extension candidates. Maximal degree in co-relation 232. Up to 11 conditions per place. [2021-06-13 07:33:46,692 INFO L132 encePairwiseOnDemand]: 77/84 looper letters, 0 selfloop transitions, 0 changer transitions 71/71 dead transitions. [2021-06-13 07:33:46,692 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 71 transitions, 320 flow [2021-06-13 07:33:46,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-13 07:33:46,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-13 07:33:46,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 470 transitions. [2021-06-13 07:33:46,693 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7993197278911565 [2021-06-13 07:33:46,693 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 470 transitions. [2021-06-13 07:33:46,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 470 transitions. [2021-06-13 07:33:46,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:33:46,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 470 transitions. [2021-06-13 07:33:46,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 67.14285714285714) internal successors, (470), 7 states have internal predecessors, (470), 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 07:33:46,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 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 07:33:46,695 INFO L81 ComplementDD]: Finished complementDD. Result has 8 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 07:33:46,695 INFO L185 Difference]: Start difference. First operand has 123 places, 73 transitions, 298 flow. Second operand 7 states and 470 transitions. [2021-06-13 07:33:46,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 71 transitions, 320 flow [2021-06-13 07:33:46,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 71 transitions, 234 flow, removed 14 selfloop flow, removed 22 redundant places. [2021-06-13 07:33:46,697 INFO L241 Difference]: Finished difference. Result has 90 places, 0 transitions, 0 flow [2021-06-13 07:33:46,697 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=90, PETRI_TRANSITIONS=0} [2021-06-13 07:33:46,697 INFO L335 CegarLoopForPetriNet]: 78 programPoint places, 12 predicate places. [2021-06-13 07:33:46,697 INFO L482 AbstractCegarLoop]: Abstraction has has 90 places, 0 transitions, 0 flow [2021-06-13 07:33:46,697 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 66.875) internal successors, (535), 8 states have internal predecessors, (535), 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 07:33:46,697 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-13 07:33:46,699 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-13 07:33:46,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.06 07:33:46 BasicIcfg [2021-06-13 07:33:46,701 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-13 07:33:46,701 INFO L168 Benchmark]: Toolchain (without parser) took 3793.08 ms. Allocated memory was 202.4 MB in the beginning and 274.7 MB in the end (delta: 72.4 MB). Free memory was 165.6 MB in the beginning and 190.2 MB in the end (delta: -24.6 MB). Peak memory consumption was 47.5 MB. Max. memory is 8.0 GB. [2021-06-13 07:33:46,702 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 202.4 MB. Free memory is still 183.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-13 07:33:46,702 INFO L168 Benchmark]: CACSL2BoogieTranslator took 327.89 ms. Allocated memory is still 202.4 MB. Free memory was 165.4 MB in the beginning and 163.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-06-13 07:33:46,702 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.55 ms. Allocated memory is still 202.4 MB. Free memory was 163.1 MB in the beginning and 161.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-13 07:33:46,702 INFO L168 Benchmark]: Boogie Preprocessor took 24.91 ms. Allocated memory is still 202.4 MB. Free memory was 161.0 MB in the beginning and 160.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-13 07:33:46,702 INFO L168 Benchmark]: RCFGBuilder took 348.23 ms. Allocated memory is still 202.4 MB. Free memory was 160.0 MB in the beginning and 135.8 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2021-06-13 07:33:46,703 INFO L168 Benchmark]: TraceAbstraction took 3044.75 ms. Allocated memory was 202.4 MB in the beginning and 274.7 MB in the end (delta: 72.4 MB). Free memory was 135.8 MB in the beginning and 190.2 MB in the end (delta: -54.3 MB). Peak memory consumption was 18.5 MB. Max. memory is 8.0 GB. [2021-06-13 07:33:46,703 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 202.4 MB. Free memory is still 183.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 327.89 ms. Allocated memory is still 202.4 MB. Free memory was 165.4 MB in the beginning and 163.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 43.55 ms. Allocated memory is still 202.4 MB. Free memory was 163.1 MB in the beginning and 161.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 24.91 ms. Allocated memory is still 202.4 MB. Free memory was 161.0 MB in the beginning and 160.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 348.23 ms. Allocated memory is still 202.4 MB. Free memory was 160.0 MB in the beginning and 135.8 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3044.75 ms. Allocated memory was 202.4 MB in the beginning and 274.7 MB in the end (delta: 72.4 MB). Free memory was 135.8 MB in the beginning and 190.2 MB in the end (delta: -54.3 MB). Peak memory consumption was 18.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 17.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2974.6ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1809.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 36.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 95 SDtfs, 220 SDslu, 334 SDs, 0 SdLazy, 423 SolverSat, 95 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 271.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 122 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 918.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=657occurred in iteration=5, InterpolantAutomatonStates: 94, 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: 38.7ms SsaConstructionTime, 195.0ms SatisfiabilityAnalysisTime, 728.0ms InterpolantComputationTime, 502 NumberOfCodeBlocks, 502 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 493 ConstructedInterpolants, 0 QuantifiedInterpolants, 1807 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...