/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/safe008_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-13 07:29:23,835 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-13 07:29:23,840 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-13 07:29:23,884 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-13 07:29:23,910 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-13 07:29:23,912 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-13 07:29:23,913 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-13 07:29:23,914 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-13 07:29:23,918 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-13 07:29:23,919 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-13 07:29:23,921 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-13 07:29:23,925 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-13 07:29:23,927 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-13 07:29:23,928 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-13 07:29:23,929 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-13 07:29:23,952 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-13 07:29:23,954 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-13 07:29:23,957 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-13 07:29:23,957 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-13 07:29:23,958 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-13 07:29:23,958 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-13 07:29:23,959 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-13 07:29:23,960 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-13 07:29:23,960 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-13 07:29:23,966 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-13 07:29:23,966 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-13 07:29:23,967 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-13 07:29:23,968 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-13 07:29:23,969 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 07:29:24,005 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-13 07:29:24,005 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-13 07:29:24,008 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-13 07:29:24,009 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-13 07:29:24,009 INFO L138 SettingsManager]: * Use SBE=true [2021-06-13 07:29:24,009 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-13 07:29:24,009 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-13 07:29:24,009 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-13 07:29:24,009 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-13 07:29:24,009 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-13 07:29:24,010 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-13 07:29:24,010 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-13 07:29:24,011 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-13 07:29:24,011 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-13 07:29:24,011 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-13 07:29:24,011 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-13 07:29:24,011 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-13 07:29:24,011 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-13 07:29:24,012 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-13 07:29:24,012 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-13 07:29:24,012 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-13 07:29:24,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 07:29:24,012 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-13 07:29:24,012 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-13 07:29:24,012 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-13 07:29:24,013 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-13 07:29:24,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-13 07:29:24,013 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-13 07:29:24,013 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-13 07:29:24,013 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-13 07:29:24,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-13 07:29:24,317 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-13 07:29:24,319 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-13 07:29:24,320 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-13 07:29:24,320 INFO L275 PluginConnector]: CDTParser initialized [2021-06-13 07:29:24,321 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe008_tso.oepc.i [2021-06-13 07:29:24,374 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e619ad8ef/cbb22f67a5d041eb806e1d5ba76fc215/FLAGa9550af6e [2021-06-13 07:29:24,888 INFO L306 CDTParser]: Found 1 translation units. [2021-06-13 07:29:24,889 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe008_tso.oepc.i [2021-06-13 07:29:24,909 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e619ad8ef/cbb22f67a5d041eb806e1d5ba76fc215/FLAGa9550af6e [2021-06-13 07:29:25,394 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e619ad8ef/cbb22f67a5d041eb806e1d5ba76fc215 [2021-06-13 07:29:25,396 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-13 07:29:25,397 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-13 07:29:25,398 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-13 07:29:25,399 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-13 07:29:25,402 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-13 07:29:25,403 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 07:29:25" (1/1) ... [2021-06-13 07:29:25,404 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5054d789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:29:25, skipping insertion in model container [2021-06-13 07:29:25,404 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 07:29:25" (1/1) ... [2021-06-13 07:29:25,411 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-13 07:29:25,447 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-13 07:29:25,564 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/safe008_tso.oepc.i[950,963] [2021-06-13 07:29:25,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 07:29:25,721 INFO L203 MainTranslator]: Completed pre-run [2021-06-13 07:29:25,730 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/safe008_tso.oepc.i[950,963] [2021-06-13 07:29:25,762 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 07:29:25,833 INFO L208 MainTranslator]: Completed translation [2021-06-13 07:29:25,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:29:25 WrapperNode [2021-06-13 07:29:25,833 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-13 07:29:25,835 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-13 07:29:25,835 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-13 07:29:25,836 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-13 07:29:25,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:29:25" (1/1) ... [2021-06-13 07:29:25,859 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:29:25" (1/1) ... [2021-06-13 07:29:25,882 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-13 07:29:25,883 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-13 07:29:25,883 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-13 07:29:25,883 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-13 07:29:25,889 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:29:25" (1/1) ... [2021-06-13 07:29:25,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:29:25" (1/1) ... [2021-06-13 07:29:25,904 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:29:25" (1/1) ... [2021-06-13 07:29:25,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:29:25" (1/1) ... [2021-06-13 07:29:25,909 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:29:25" (1/1) ... [2021-06-13 07:29:25,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:29:25" (1/1) ... [2021-06-13 07:29:25,911 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:29:25" (1/1) ... [2021-06-13 07:29:25,913 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-13 07:29:25,914 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-13 07:29:25,914 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-13 07:29:25,914 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-13 07:29:25,915 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:29:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 07:29:25,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-13 07:29:25,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-13 07:29:25,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-13 07:29:25,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-13 07:29:25,999 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-13 07:29:25,999 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-13 07:29:25,999 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-13 07:29:26,000 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-13 07:29:26,000 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-13 07:29:26,001 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-13 07:29:26,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-13 07:29:26,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-13 07:29:26,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-13 07:29:26,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-13 07:29:26,002 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-13 07:29:26,381 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-13 07:29:26,382 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-13 07:29:26,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 07:29:26 BoogieIcfgContainer [2021-06-13 07:29:26,384 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-13 07:29:26,387 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-13 07:29:26,388 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-13 07:29:26,390 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-13 07:29:26,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.06 07:29:25" (1/3) ... [2021-06-13 07:29:26,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78c77c2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 07:29:26, skipping insertion in model container [2021-06-13 07:29:26,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:29:25" (2/3) ... [2021-06-13 07:29:26,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78c77c2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 07:29:26, skipping insertion in model container [2021-06-13 07:29:26,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 07:29:26" (3/3) ... [2021-06-13 07:29:26,393 INFO L111 eAbstractionObserver]: Analyzing ICFG safe008_tso.oepc.i [2021-06-13 07:29:26,400 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-13 07:29:26,401 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-13 07:29:26,401 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-13 07:29:26,432 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:26,433 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:26,433 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:26,433 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:26,433 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:26,433 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:26,433 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:26,434 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:26,434 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:26,434 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:26,434 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:26,434 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:26,435 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:26,435 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:26,435 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:26,435 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:26,436 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:26,436 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:26,439 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:26,439 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:26,443 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:26,443 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:26,444 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:26,444 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:26,445 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:26,445 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:26,445 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:26,445 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:26,445 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:26,446 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:26,446 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:26,446 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:26,446 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:26,446 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:26,447 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:26,447 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:26,449 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:26,449 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:26,449 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:26,450 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:26,454 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:26,454 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:26,454 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:26,454 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:26,456 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:26,456 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:26,457 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:26,457 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:26,461 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-13 07:29:26,480 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-13 07:29:26,511 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 07:29:26,511 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 07:29:26,511 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 07:29:26,511 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 07:29:26,512 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 07:29:26,512 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 07:29:26,512 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 07:29:26,512 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-13 07:29:26,528 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2021-06-13 07:29:26,567 INFO L129 PetriNetUnfolder]: 2/81 cut-off events. [2021-06-13 07:29:26,568 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:29:26,573 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 07:29:26,573 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 84 transitions, 183 flow [2021-06-13 07:29:26,577 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 69 transitions, 147 flow [2021-06-13 07:29:26,612 INFO L129 PetriNetUnfolder]: 1/68 cut-off events. [2021-06-13 07:29:26,612 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:29:26,612 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:29:26,613 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 07:29:26,613 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:29:26,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:29:26,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1432389661, now seen corresponding path program 1 times [2021-06-13 07:29:26,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:29:26,627 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303428570] [2021-06-13 07:29:26,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:29:26,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:29:26,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:26,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:29:26,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:26,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:29:26,982 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-13 07:29:26,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 07:29:26,997 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:29:26,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:29:27,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:27,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:29:27,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:27,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:29:27,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:27,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:29:27,048 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 07:29:27,048 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:29:27,048 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303428570] [2021-06-13 07:29:27,051 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303428570] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:29:27,051 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:29:27,051 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:29:27,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593311191] [2021-06-13 07:29:27,060 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:29:27,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:29:27,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:29:27,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:29:27,085 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 84 [2021-06-13 07:29:27,092 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 69 transitions, 147 flow. Second operand has 7 states, 7 states have (on average 68.28571428571429) internal successors, (478), 7 states have internal predecessors, (478), 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 07:29:27,092 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:29:27,092 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 84 [2021-06-13 07:29:27,098 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:29:27,396 INFO L129 PetriNetUnfolder]: 124/384 cut-off events. [2021-06-13 07:29:27,397 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:29:27,399 INFO L84 FinitePrefix]: Finished finitePrefix Result has 632 conditions, 384 events. 124/384 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1843 event pairs, 2 based on Foata normal form. 17/386 useless extension candidates. Maximal degree in co-relation 599. Up to 73 conditions per place. [2021-06-13 07:29:27,401 INFO L132 encePairwiseOnDemand]: 75/84 looper letters, 17 selfloop transitions, 4 changer transitions 35/111 dead transitions. [2021-06-13 07:29:27,401 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 111 transitions, 343 flow [2021-06-13 07:29:27,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 07:29:27,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-13 07:29:27,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 933 transitions. [2021-06-13 07:29:27,416 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8543956043956044 [2021-06-13 07:29:27,417 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 933 transitions. [2021-06-13 07:29:27,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 933 transitions. [2021-06-13 07:29:27,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:29:27,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 933 transitions. [2021-06-13 07:29:27,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 71.76923076923077) internal successors, (933), 13 states have internal predecessors, (933), 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 07:29:27,435 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 07:29:27,436 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 07:29:27,438 INFO L185 Difference]: Start difference. First operand has 78 places, 69 transitions, 147 flow. Second operand 13 states and 933 transitions. [2021-06-13 07:29:27,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 111 transitions, 343 flow [2021-06-13 07:29:27,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 111 transitions, 340 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-06-13 07:29:27,444 INFO L241 Difference]: Finished difference. Result has 99 places, 70 transitions, 200 flow [2021-06-13 07:29:27,446 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=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=200, PETRI_PLACES=99, PETRI_TRANSITIONS=70} [2021-06-13 07:29:27,447 INFO L335 CegarLoopForPetriNet]: 78 programPoint places, 21 predicate places. [2021-06-13 07:29:27,447 INFO L482 AbstractCegarLoop]: Abstraction has has 99 places, 70 transitions, 200 flow [2021-06-13 07:29:27,448 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 68.28571428571429) internal successors, (478), 7 states have internal predecessors, (478), 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 07:29:27,448 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:29:27,448 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 07:29:27,448 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-13 07:29:27,448 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:29:27,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:29:27,449 INFO L82 PathProgramCache]: Analyzing trace with hash -545670556, now seen corresponding path program 1 times [2021-06-13 07:29:27,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:29:27,449 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201924554] [2021-06-13 07:29:27,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:29:27,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:29:27,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:27,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:29:27,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:27,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:29:27,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:27,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:29:27,518 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:29:27,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:29:27,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:27,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:29:27,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:27,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:29:27,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:27,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:29:27,563 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 07:29:27,564 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:29:27,564 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201924554] [2021-06-13 07:29:27,564 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201924554] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:29:27,564 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:29:27,564 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:29:27,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372706665] [2021-06-13 07:29:27,566 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:29:27,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:29:27,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:29:27,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:29:27,570 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-06-13 07:29:27,570 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 70 transitions, 200 flow. Second operand has 7 states, 7 states have (on average 71.28571428571429) internal successors, (499), 7 states have internal predecessors, (499), 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 07:29:27,570 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:29:27,570 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-06-13 07:29:27,571 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:29:27,755 INFO L129 PetriNetUnfolder]: 17/167 cut-off events. [2021-06-13 07:29:27,756 INFO L130 PetriNetUnfolder]: For 189/226 co-relation queries the response was YES. [2021-06-13 07:29:27,758 INFO L84 FinitePrefix]: Finished finitePrefix Result has 373 conditions, 167 events. 17/167 cut-off events. For 189/226 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 592 event pairs, 6 based on Foata normal form. 11/171 useless extension candidates. Maximal degree in co-relation 347. Up to 19 conditions per place. [2021-06-13 07:29:27,759 INFO L132 encePairwiseOnDemand]: 76/84 looper letters, 6 selfloop transitions, 4 changer transitions 14/82 dead transitions. [2021-06-13 07:29:27,759 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 82 transitions, 304 flow [2021-06-13 07:29:27,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 07:29:27,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 07:29:27,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 724 transitions. [2021-06-13 07:29:27,762 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.861904761904762 [2021-06-13 07:29:27,762 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 724 transitions. [2021-06-13 07:29:27,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 724 transitions. [2021-06-13 07:29:27,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:29:27,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 724 transitions. [2021-06-13 07:29:27,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 72.4) internal successors, (724), 10 states have internal predecessors, (724), 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 07:29:27,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 84.0) internal successors, (924), 11 states have internal predecessors, (924), 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 07:29:27,766 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 84.0) internal successors, (924), 11 states have internal predecessors, (924), 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 07:29:27,767 INFO L185 Difference]: Start difference. First operand has 99 places, 70 transitions, 200 flow. Second operand 10 states and 724 transitions. [2021-06-13 07:29:27,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 82 transitions, 304 flow [2021-06-13 07:29:27,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 82 transitions, 271 flow, removed 15 selfloop flow, removed 4 redundant places. [2021-06-13 07:29:27,774 INFO L241 Difference]: Finished difference. Result has 103 places, 68 transitions, 206 flow [2021-06-13 07:29:27,774 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=206, PETRI_PLACES=103, PETRI_TRANSITIONS=68} [2021-06-13 07:29:27,775 INFO L335 CegarLoopForPetriNet]: 78 programPoint places, 25 predicate places. [2021-06-13 07:29:27,775 INFO L482 AbstractCegarLoop]: Abstraction has has 103 places, 68 transitions, 206 flow [2021-06-13 07:29:27,775 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 71.28571428571429) internal successors, (499), 7 states have internal predecessors, (499), 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 07:29:27,775 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:29:27,775 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 07:29:27,776 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-13 07:29:27,776 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:29:27,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:29:27,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1592541127, now seen corresponding path program 1 times [2021-06-13 07:29:27,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:29:27,780 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156284074] [2021-06-13 07:29:27,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:29:27,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:29:27,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:27,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:29:27,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:27,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:29:27,885 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:29:27,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:29:27,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:27,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:29:27,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:27,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:29:27,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:27,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:29:27,923 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 07:29:27,923 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:29:27,924 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156284074] [2021-06-13 07:29:27,924 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156284074] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:29:27,924 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:29:27,924 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 07:29:27,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674692937] [2021-06-13 07:29:27,924 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-13 07:29:27,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:29:27,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-13 07:29:27,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-13 07:29:27,926 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 84 [2021-06-13 07:29:27,945 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 68 transitions, 206 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 07:29:27,945 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:29:27,945 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 84 [2021-06-13 07:29:27,945 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:29:28,046 INFO L129 PetriNetUnfolder]: 3/109 cut-off events. [2021-06-13 07:29:28,046 INFO L130 PetriNetUnfolder]: For 96/101 co-relation queries the response was YES. [2021-06-13 07:29:28,047 INFO L84 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 109 events. 3/109 cut-off events. For 96/101 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 248 event pairs, 0 based on Foata normal form. 2/111 useless extension candidates. Maximal degree in co-relation 200. Up to 12 conditions per place. [2021-06-13 07:29:28,047 INFO L132 encePairwiseOnDemand]: 78/84 looper letters, 6 selfloop transitions, 2 changer transitions 10/78 dead transitions. [2021-06-13 07:29:28,048 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 78 transitions, 294 flow [2021-06-13 07:29:28,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 07:29:28,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 07:29:28,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 668 transitions. [2021-06-13 07:29:28,050 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8835978835978836 [2021-06-13 07:29:28,050 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 668 transitions. [2021-06-13 07:29:28,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 668 transitions. [2021-06-13 07:29:28,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:29:28,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 668 transitions. [2021-06-13 07:29:28,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.22222222222223) internal successors, (668), 9 states have internal predecessors, (668), 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 07:29:28,054 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 07:29:28,054 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 07:29:28,054 INFO L185 Difference]: Start difference. First operand has 103 places, 68 transitions, 206 flow. Second operand 9 states and 668 transitions. [2021-06-13 07:29:28,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 78 transitions, 294 flow [2021-06-13 07:29:28,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 78 transitions, 222 flow, removed 31 selfloop flow, removed 16 redundant places. [2021-06-13 07:29:28,057 INFO L241 Difference]: Finished difference. Result has 95 places, 68 transitions, 182 flow [2021-06-13 07:29:28,058 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=80, 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=182, PETRI_PLACES=95, PETRI_TRANSITIONS=68} [2021-06-13 07:29:28,058 INFO L335 CegarLoopForPetriNet]: 78 programPoint places, 17 predicate places. [2021-06-13 07:29:28,058 INFO L482 AbstractCegarLoop]: Abstraction has has 95 places, 68 transitions, 182 flow [2021-06-13 07:29:28,058 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 07:29:28,058 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:29:28,058 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] [2021-06-13 07:29:28,059 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-13 07:29:28,059 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:29:28,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:29:28,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1457069826, now seen corresponding path program 1 times [2021-06-13 07:29:28,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:29:28,059 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814508560] [2021-06-13 07:29:28,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:29:28,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:29:28,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:28,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:29:28,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:28,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:29:28,107 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-13 07:29:28,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 07:29:28,116 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:29:28,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:29:28,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:28,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:29:28,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:28,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:29:28,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:28,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:29:28,156 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 07:29:28,156 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:29:28,156 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814508560] [2021-06-13 07:29:28,156 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814508560] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:29:28,156 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:29:28,156 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:29:28,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663069418] [2021-06-13 07:29:28,157 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:29:28,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:29:28,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:29:28,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:29:28,159 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 84 [2021-06-13 07:29:28,159 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 68 transitions, 182 flow. Second operand has 7 states, 7 states have (on average 66.85714285714286) internal successors, (468), 7 states have internal predecessors, (468), 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 07:29:28,160 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:29:28,160 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 84 [2021-06-13 07:29:28,160 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:29:28,376 INFO L129 PetriNetUnfolder]: 44/257 cut-off events. [2021-06-13 07:29:28,376 INFO L130 PetriNetUnfolder]: For 183/214 co-relation queries the response was YES. [2021-06-13 07:29:28,377 INFO L84 FinitePrefix]: Finished finitePrefix Result has 529 conditions, 257 events. 44/257 cut-off events. For 183/214 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1147 event pairs, 0 based on Foata normal form. 6/262 useless extension candidates. Maximal degree in co-relation 484. Up to 28 conditions per place. [2021-06-13 07:29:28,378 INFO L132 encePairwiseOnDemand]: 73/84 looper letters, 25 selfloop transitions, 10 changer transitions 19/106 dead transitions. [2021-06-13 07:29:28,378 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 106 transitions, 484 flow [2021-06-13 07:29:28,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-13 07:29:28,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-13 07:29:28,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 769 transitions. [2021-06-13 07:29:28,381 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8322510822510822 [2021-06-13 07:29:28,381 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 769 transitions. [2021-06-13 07:29:28,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 769 transitions. [2021-06-13 07:29:28,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:29:28,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 769 transitions. [2021-06-13 07:29:28,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 69.9090909090909) internal successors, (769), 11 states have internal predecessors, (769), 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 07:29:28,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 84.0) internal successors, (1008), 12 states have internal predecessors, (1008), 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 07:29:28,386 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 84.0) internal successors, (1008), 12 states have internal predecessors, (1008), 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 07:29:28,386 INFO L185 Difference]: Start difference. First operand has 95 places, 68 transitions, 182 flow. Second operand 11 states and 769 transitions. [2021-06-13 07:29:28,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 106 transitions, 484 flow [2021-06-13 07:29:28,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 106 transitions, 412 flow, removed 32 selfloop flow, removed 8 redundant places. [2021-06-13 07:29:28,389 INFO L241 Difference]: Finished difference. Result has 100 places, 73 transitions, 246 flow [2021-06-13 07:29:28,389 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=246, PETRI_PLACES=100, PETRI_TRANSITIONS=73} [2021-06-13 07:29:28,389 INFO L335 CegarLoopForPetriNet]: 78 programPoint places, 22 predicate places. [2021-06-13 07:29:28,390 INFO L482 AbstractCegarLoop]: Abstraction has has 100 places, 73 transitions, 246 flow [2021-06-13 07:29:28,390 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 66.85714285714286) internal successors, (468), 7 states have internal predecessors, (468), 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 07:29:28,390 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:29:28,390 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] [2021-06-13 07:29:28,390 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-13 07:29:28,390 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:29:28,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:29:28,391 INFO L82 PathProgramCache]: Analyzing trace with hash -576131048, now seen corresponding path program 2 times [2021-06-13 07:29:28,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:29:28,391 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348216810] [2021-06-13 07:29:28,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:29:28,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:29:28,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:28,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:29:28,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:28,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:29:28,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:28,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:29:28,482 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:29:28,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:29:28,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:28,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:29:28,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:28,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:29:28,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:28,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:29:28,523 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 07:29:28,523 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:29:28,523 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348216810] [2021-06-13 07:29:28,523 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348216810] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:29:28,523 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:29:28,523 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:29:28,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120949904] [2021-06-13 07:29:28,525 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:29:28,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:29:28,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:29:28,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:29:28,526 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-06-13 07:29:28,527 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 73 transitions, 246 flow. Second operand has 7 states, 7 states have (on average 71.28571428571429) internal successors, (499), 7 states have internal predecessors, (499), 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 07:29:28,527 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:29:28,527 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-06-13 07:29:28,527 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:29:28,666 INFO L129 PetriNetUnfolder]: 15/162 cut-off events. [2021-06-13 07:29:28,666 INFO L130 PetriNetUnfolder]: For 203/244 co-relation queries the response was YES. [2021-06-13 07:29:28,667 INFO L84 FinitePrefix]: Finished finitePrefix Result has 382 conditions, 162 events. 15/162 cut-off events. For 203/244 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 544 event pairs, 0 based on Foata normal form. 8/169 useless extension candidates. Maximal degree in co-relation 361. Up to 21 conditions per place. [2021-06-13 07:29:28,668 INFO L132 encePairwiseOnDemand]: 76/84 looper letters, 6 selfloop transitions, 4 changer transitions 21/88 dead transitions. [2021-06-13 07:29:28,668 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 88 transitions, 390 flow [2021-06-13 07:29:28,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 07:29:28,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 07:29:28,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 724 transitions. [2021-06-13 07:29:28,670 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.861904761904762 [2021-06-13 07:29:28,670 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 724 transitions. [2021-06-13 07:29:28,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 724 transitions. [2021-06-13 07:29:28,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:29:28,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 724 transitions. [2021-06-13 07:29:28,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 72.4) internal successors, (724), 10 states have internal predecessors, (724), 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 07:29:28,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 84.0) internal successors, (924), 11 states have internal predecessors, (924), 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 07:29:28,676 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 84.0) internal successors, (924), 11 states have internal predecessors, (924), 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 07:29:28,676 INFO L185 Difference]: Start difference. First operand has 100 places, 73 transitions, 246 flow. Second operand 10 states and 724 transitions. [2021-06-13 07:29:28,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 88 transitions, 390 flow [2021-06-13 07:29:28,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 88 transitions, 355 flow, removed 14 selfloop flow, removed 7 redundant places. [2021-06-13 07:29:28,680 INFO L241 Difference]: Finished difference. Result has 104 places, 67 transitions, 214 flow [2021-06-13 07:29:28,681 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=214, PETRI_PLACES=104, PETRI_TRANSITIONS=67} [2021-06-13 07:29:28,681 INFO L335 CegarLoopForPetriNet]: 78 programPoint places, 26 predicate places. [2021-06-13 07:29:28,681 INFO L482 AbstractCegarLoop]: Abstraction has has 104 places, 67 transitions, 214 flow [2021-06-13 07:29:28,681 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 71.28571428571429) internal successors, (499), 7 states have internal predecessors, (499), 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 07:29:28,681 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:29:28,681 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 07:29:28,682 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-13 07:29:28,682 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:29:28,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:29:28,682 INFO L82 PathProgramCache]: Analyzing trace with hash -227798624, now seen corresponding path program 1 times [2021-06-13 07:29:28,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:29:28,682 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830624313] [2021-06-13 07:29:28,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:29:28,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:29:28,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:28,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:29:28,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:28,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:29:28,758 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-13 07:29:28,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 07:29:28,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:28,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:29:28,785 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 07:29:28,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:29:28,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:28,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:29:28,796 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 07:29:28,796 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:29:28,797 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830624313] [2021-06-13 07:29:28,797 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830624313] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:29:28,797 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:29:28,797 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 07:29:28,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000254963] [2021-06-13 07:29:28,798 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-13 07:29:28,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:29:28,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-13 07:29:28,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-13 07:29:28,812 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-06-13 07:29:28,813 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 67 transitions, 214 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 07:29:28,813 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:29:28,813 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-06-13 07:29:28,813 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:29:28,937 INFO L129 PetriNetUnfolder]: 93/302 cut-off events. [2021-06-13 07:29:28,937 INFO L130 PetriNetUnfolder]: For 108/111 co-relation queries the response was YES. [2021-06-13 07:29:28,938 INFO L84 FinitePrefix]: Finished finitePrefix Result has 567 conditions, 302 events. 93/302 cut-off events. For 108/111 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1429 event pairs, 12 based on Foata normal form. 8/300 useless extension candidates. Maximal degree in co-relation 536. Up to 86 conditions per place. [2021-06-13 07:29:28,939 INFO L132 encePairwiseOnDemand]: 75/84 looper letters, 9 selfloop transitions, 5 changer transitions 21/92 dead transitions. [2021-06-13 07:29:28,939 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 92 transitions, 334 flow [2021-06-13 07:29:28,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 07:29:28,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 07:29:28,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 667 transitions. [2021-06-13 07:29:28,941 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8822751322751323 [2021-06-13 07:29:28,941 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 667 transitions. [2021-06-13 07:29:28,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 667 transitions. [2021-06-13 07:29:28,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:29:28,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 667 transitions. [2021-06-13 07:29:28,944 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 07:29:28,946 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 07:29:28,946 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 07:29:28,946 INFO L185 Difference]: Start difference. First operand has 104 places, 67 transitions, 214 flow. Second operand 9 states and 667 transitions. [2021-06-13 07:29:28,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 92 transitions, 334 flow [2021-06-13 07:29:28,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 92 transitions, 282 flow, removed 12 selfloop flow, removed 18 redundant places. [2021-06-13 07:29:28,949 INFO L241 Difference]: Finished difference. Result has 94 places, 69 transitions, 212 flow [2021-06-13 07:29:28,949 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=212, PETRI_PLACES=94, PETRI_TRANSITIONS=69} [2021-06-13 07:29:28,949 INFO L335 CegarLoopForPetriNet]: 78 programPoint places, 16 predicate places. [2021-06-13 07:29:28,949 INFO L482 AbstractCegarLoop]: Abstraction has has 94 places, 69 transitions, 212 flow [2021-06-13 07:29:28,950 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 07:29:28,950 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:29:28,950 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] [2021-06-13 07:29:28,950 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-13 07:29:28,950 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:29:28,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:29:28,950 INFO L82 PathProgramCache]: Analyzing trace with hash 773463361, now seen corresponding path program 1 times [2021-06-13 07:29:28,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:29:28,951 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595093087] [2021-06-13 07:29:28,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:29:28,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:29:28,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:28,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:29:28,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:28,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:29:28,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:28,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:29:29,005 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-13 07:29:29,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 07:29:29,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:29,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:29:29,031 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 07:29:29,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:29:29,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:29,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:29:29,043 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 07:29:29,044 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:29:29,044 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595093087] [2021-06-13 07:29:29,045 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595093087] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:29:29,045 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:29:29,045 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:29:29,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269806299] [2021-06-13 07:29:29,045 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:29:29,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:29:29,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:29:29,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:29:29,048 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-06-13 07:29:29,048 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 69 transitions, 212 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 07:29:29,048 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:29:29,048 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-06-13 07:29:29,048 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:29:29,179 INFO L129 PetriNetUnfolder]: 42/181 cut-off events. [2021-06-13 07:29:29,179 INFO L130 PetriNetUnfolder]: For 229/271 co-relation queries the response was YES. [2021-06-13 07:29:29,180 INFO L84 FinitePrefix]: Finished finitePrefix Result has 525 conditions, 181 events. 42/181 cut-off events. For 229/271 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 648 event pairs, 0 based on Foata normal form. 10/187 useless extension candidates. Maximal degree in co-relation 482. Up to 64 conditions per place. [2021-06-13 07:29:29,180 INFO L132 encePairwiseOnDemand]: 75/84 looper letters, 5 selfloop transitions, 7 changer transitions 25/94 dead transitions. [2021-06-13 07:29:29,181 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 94 transitions, 463 flow [2021-06-13 07:29:29,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 07:29:29,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 07:29:29,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 739 transitions. [2021-06-13 07:29:29,183 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8797619047619047 [2021-06-13 07:29:29,183 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 739 transitions. [2021-06-13 07:29:29,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 739 transitions. [2021-06-13 07:29:29,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:29:29,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 739 transitions. [2021-06-13 07:29:29,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 73.9) internal successors, (739), 10 states have internal predecessors, (739), 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 07:29:29,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 84.0) internal successors, (924), 11 states have internal predecessors, (924), 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 07:29:29,187 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 84.0) internal successors, (924), 11 states have internal predecessors, (924), 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 07:29:29,187 INFO L185 Difference]: Start difference. First operand has 94 places, 69 transitions, 212 flow. Second operand 10 states and 739 transitions. [2021-06-13 07:29:29,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 94 transitions, 463 flow [2021-06-13 07:29:29,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 94 transitions, 436 flow, removed 8 selfloop flow, removed 6 redundant places. [2021-06-13 07:29:29,190 INFO L241 Difference]: Finished difference. Result has 99 places, 69 transitions, 234 flow [2021-06-13 07:29:29,190 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=234, PETRI_PLACES=99, PETRI_TRANSITIONS=69} [2021-06-13 07:29:29,190 INFO L335 CegarLoopForPetriNet]: 78 programPoint places, 21 predicate places. [2021-06-13 07:29:29,190 INFO L482 AbstractCegarLoop]: Abstraction has has 99 places, 69 transitions, 234 flow [2021-06-13 07:29:29,191 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 07:29:29,191 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:29:29,191 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:29:29,191 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-13 07:29:29,191 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:29:29,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:29:29,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1992647716, now seen corresponding path program 1 times [2021-06-13 07:29:29,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:29:29,192 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730051565] [2021-06-13 07:29:29,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:29:29,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:29:29,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:29,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:29:29,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:29,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:29:29,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:29,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:29:29,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:29,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:29:29,235 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-13 07:29:29,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 07:29:29,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:29,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:29:29,263 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 07:29:29,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:29:29,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:29,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:29:29,273 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 07:29:29,273 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:29:29,273 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730051565] [2021-06-13 07:29:29,273 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730051565] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:29:29,273 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:29:29,274 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 07:29:29,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413019603] [2021-06-13 07:29:29,274 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 07:29:29,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:29:29,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 07:29:29,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-13 07:29:29,276 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-06-13 07:29:29,276 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 69 transitions, 234 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 07:29:29,276 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:29:29,277 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-06-13 07:29:29,277 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:29:29,401 INFO L129 PetriNetUnfolder]: 4/78 cut-off events. [2021-06-13 07:29:29,402 INFO L130 PetriNetUnfolder]: For 181/211 co-relation queries the response was YES. [2021-06-13 07:29:29,402 INFO L84 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 78 events. 4/78 cut-off events. For 181/211 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 112 event pairs, 0 based on Foata normal form. 8/86 useless extension candidates. Maximal degree in co-relation 183. Up to 13 conditions per place. [2021-06-13 07:29:29,402 INFO L132 encePairwiseOnDemand]: 75/84 looper letters, 0 selfloop transitions, 0 changer transitions 72/72 dead transitions. [2021-06-13 07:29:29,402 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 72 transitions, 330 flow [2021-06-13 07:29:29,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-13 07:29:29,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-13 07:29:29,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 793 transitions. [2021-06-13 07:29:29,405 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8582251082251082 [2021-06-13 07:29:29,405 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 793 transitions. [2021-06-13 07:29:29,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 793 transitions. [2021-06-13 07:29:29,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:29:29,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 793 transitions. [2021-06-13 07:29:29,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 72.0909090909091) internal successors, (793), 11 states have internal predecessors, (793), 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 07:29:29,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 84.0) internal successors, (1008), 12 states have internal predecessors, (1008), 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 07:29:29,409 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 84.0) internal successors, (1008), 12 states have internal predecessors, (1008), 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 07:29:29,409 INFO L185 Difference]: Start difference. First operand has 99 places, 69 transitions, 234 flow. Second operand 11 states and 793 transitions. [2021-06-13 07:29:29,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 72 transitions, 330 flow [2021-06-13 07:29:29,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 72 transitions, 263 flow, removed 23 selfloop flow, removed 11 redundant places. [2021-06-13 07:29:29,412 INFO L241 Difference]: Finished difference. Result has 88 places, 0 transitions, 0 flow [2021-06-13 07:29:29,412 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=88, PETRI_TRANSITIONS=0} [2021-06-13 07:29:29,413 INFO L335 CegarLoopForPetriNet]: 78 programPoint places, 10 predicate places. [2021-06-13 07:29:29,413 INFO L482 AbstractCegarLoop]: Abstraction has has 88 places, 0 transitions, 0 flow [2021-06-13 07:29:29,413 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 07:29:29,413 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-13 07:29:29,415 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-13 07:29:29,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.06 07:29:29 BasicIcfg [2021-06-13 07:29:29,418 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-13 07:29:29,421 INFO L168 Benchmark]: Toolchain (without parser) took 4021.31 ms. Allocated memory was 185.6 MB in the beginning and 268.4 MB in the end (delta: 82.8 MB). Free memory was 148.2 MB in the beginning and 120.0 MB in the end (delta: 28.2 MB). Peak memory consumption was 112.6 MB. Max. memory is 8.0 GB. [2021-06-13 07:29:29,421 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 185.6 MB. Free memory is still 166.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-13 07:29:29,422 INFO L168 Benchmark]: CACSL2BoogieTranslator took 436.24 ms. Allocated memory is still 185.6 MB. Free memory was 148.0 MB in the beginning and 147.4 MB in the end (delta: 566.5 kB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-06-13 07:29:29,423 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.53 ms. Allocated memory is still 185.6 MB. Free memory was 147.4 MB in the beginning and 145.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-13 07:29:29,424 INFO L168 Benchmark]: Boogie Preprocessor took 30.79 ms. Allocated memory is still 185.6 MB. Free memory was 145.6 MB in the beginning and 144.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-13 07:29:29,425 INFO L168 Benchmark]: RCFGBuilder took 469.77 ms. Allocated memory is still 185.6 MB. Free memory was 144.0 MB in the beginning and 121.0 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2021-06-13 07:29:29,425 INFO L168 Benchmark]: TraceAbstraction took 3030.64 ms. Allocated memory was 185.6 MB in the beginning and 268.4 MB in the end (delta: 82.8 MB). Free memory was 120.4 MB in the beginning and 120.0 MB in the end (delta: 408.0 kB). Peak memory consumption was 84.3 MB. Max. memory is 8.0 GB. [2021-06-13 07:29:29,432 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 185.6 MB. Free memory is still 166.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 436.24 ms. Allocated memory is still 185.6 MB. Free memory was 148.0 MB in the beginning and 147.4 MB in the end (delta: 566.5 kB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 46.53 ms. Allocated memory is still 185.6 MB. Free memory was 147.4 MB in the beginning and 145.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 30.79 ms. Allocated memory is still 185.6 MB. Free memory was 145.6 MB in the beginning and 144.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 469.77 ms. Allocated memory is still 185.6 MB. Free memory was 144.0 MB in the beginning and 121.0 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3030.64 ms. Allocated memory was 185.6 MB in the beginning and 268.4 MB in the end (delta: 82.8 MB). Free memory was 120.4 MB in the beginning and 120.0 MB in the end (delta: 408.0 kB). Peak memory consumption was 84.3 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: 34.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2909.1ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1527.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 65.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 92 SDtfs, 212 SDslu, 292 SDs, 0 SdLazy, 305 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 228.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 107 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1026.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=246occurred in iteration=4, InterpolantAutomatonStates: 83, 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: 28.9ms SsaConstructionTime, 207.9ms SatisfiabilityAnalysisTime, 859.5ms InterpolantComputationTime, 440 NumberOfCodeBlocks, 440 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 432 ConstructedInterpolants, 0 QuantifiedInterpolants, 1570 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...