/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/safe002_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-13 07:28:04,885 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-13 07:28:04,887 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-13 07:28:04,920 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-13 07:28:04,920 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-13 07:28:04,922 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-13 07:28:04,924 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-13 07:28:04,928 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-13 07:28:04,930 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-13 07:28:04,933 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-13 07:28:04,934 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-13 07:28:04,935 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-13 07:28:04,935 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-13 07:28:04,936 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-13 07:28:04,937 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-13 07:28:04,938 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-13 07:28:04,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-13 07:28:04,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-13 07:28:04,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-13 07:28:04,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-13 07:28:04,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-13 07:28:04,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-13 07:28:04,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-13 07:28:04,967 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-13 07:28:04,971 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-13 07:28:04,974 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-13 07:28:04,974 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-13 07:28:04,975 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-13 07:28:04,976 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-13 07:28:04,976 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-13 07:28:04,976 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-13 07:28:04,977 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-13 07:28:04,977 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-13 07:28:04,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-13 07:28:04,978 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-13 07:28:04,978 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-13 07:28:04,981 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 07:28:05,013 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-13 07:28:05,013 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-13 07:28:05,015 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-13 07:28:05,015 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-13 07:28:05,015 INFO L138 SettingsManager]: * Use SBE=true [2021-06-13 07:28:05,016 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-13 07:28:05,016 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-13 07:28:05,016 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-13 07:28:05,016 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-13 07:28:05,016 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-13 07:28:05,017 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-13 07:28:05,017 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-13 07:28:05,017 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-13 07:28:05,017 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-13 07:28:05,017 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-13 07:28:05,017 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-13 07:28:05,017 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-13 07:28:05,017 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-13 07:28:05,018 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-13 07:28:05,018 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-13 07:28:05,018 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-13 07:28:05,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 07:28:05,018 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-13 07:28:05,018 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-13 07:28:05,018 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-13 07:28:05,018 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-13 07:28:05,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-13 07:28:05,019 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-13 07:28:05,019 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-13 07:28:05,019 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-13 07:28:05,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-13 07:28:05,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-13 07:28:05,248 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-13 07:28:05,249 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-13 07:28:05,249 INFO L275 PluginConnector]: CDTParser initialized [2021-06-13 07:28:05,250 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.opt.i [2021-06-13 07:28:05,301 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd237725b/742ac069addc48749171cf23c7abfcfc/FLAGb02ed732a [2021-06-13 07:28:05,612 INFO L306 CDTParser]: Found 1 translation units. [2021-06-13 07:28:05,613 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.opt.i [2021-06-13 07:28:05,620 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd237725b/742ac069addc48749171cf23c7abfcfc/FLAGb02ed732a [2021-06-13 07:28:06,018 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd237725b/742ac069addc48749171cf23c7abfcfc [2021-06-13 07:28:06,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-13 07:28:06,021 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-13 07:28:06,025 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-13 07:28:06,025 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-13 07:28:06,027 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-13 07:28:06,028 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 07:28:06" (1/1) ... [2021-06-13 07:28:06,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f6ada05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:28:06, skipping insertion in model container [2021-06-13 07:28:06,029 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 07:28:06" (1/1) ... [2021-06-13 07:28:06,036 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-13 07:28:06,075 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-13 07:28:06,160 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/safe002_tso.opt.i[949,962] [2021-06-13 07:28:06,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 07:28:06,309 INFO L203 MainTranslator]: Completed pre-run [2021-06-13 07:28:06,356 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/safe002_tso.opt.i[949,962] [2021-06-13 07:28:06,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 07:28:06,435 INFO L208 MainTranslator]: Completed translation [2021-06-13 07:28:06,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:28:06 WrapperNode [2021-06-13 07:28:06,435 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-13 07:28:06,437 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-13 07:28:06,437 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-13 07:28:06,437 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-13 07:28:06,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:28:06" (1/1) ... [2021-06-13 07:28:06,465 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:28:06" (1/1) ... [2021-06-13 07:28:06,483 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-13 07:28:06,484 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-13 07:28:06,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-13 07:28:06,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-13 07:28:06,489 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:28:06" (1/1) ... [2021-06-13 07:28:06,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:28:06" (1/1) ... [2021-06-13 07:28:06,498 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:28:06" (1/1) ... [2021-06-13 07:28:06,498 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:28:06" (1/1) ... [2021-06-13 07:28:06,511 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:28:06" (1/1) ... [2021-06-13 07:28:06,512 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:28:06" (1/1) ... [2021-06-13 07:28:06,513 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:28:06" (1/1) ... [2021-06-13 07:28:06,514 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-13 07:28:06,515 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-13 07:28:06,515 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-13 07:28:06,515 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-13 07:28:06,515 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:28:06" (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 07:28:06,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-13 07:28:06,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-13 07:28:06,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-13 07:28:06,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-13 07:28:06,608 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-13 07:28:06,608 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-13 07:28:06,609 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-13 07:28:06,609 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-13 07:28:06,609 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-13 07:28:06,609 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-13 07:28:06,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-13 07:28:06,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-13 07:28:06,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-13 07:28:06,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-13 07:28:06,610 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 07:28:06,889 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-13 07:28:06,890 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-13 07:28:06,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 07:28:06 BoogieIcfgContainer [2021-06-13 07:28:06,891 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-13 07:28:06,892 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-13 07:28:06,892 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-13 07:28:06,894 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-13 07:28:06,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.06 07:28:06" (1/3) ... [2021-06-13 07:28:06,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17653f1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 07:28:06, skipping insertion in model container [2021-06-13 07:28:06,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:28:06" (2/3) ... [2021-06-13 07:28:06,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17653f1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 07:28:06, skipping insertion in model container [2021-06-13 07:28:06,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 07:28:06" (3/3) ... [2021-06-13 07:28:06,896 INFO L111 eAbstractionObserver]: Analyzing ICFG safe002_tso.opt.i [2021-06-13 07:28:06,900 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-13 07:28:06,900 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-13 07:28:06,900 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-13 07:28:06,918 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:06,918 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:06,918 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:06,919 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:06,919 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:06,919 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:06,919 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:06,919 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:06,919 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:06,919 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:06,919 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:06,920 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:06,920 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:06,920 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:06,920 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:06,920 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:06,920 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:06,920 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:06,920 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:06,921 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:06,921 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:06,921 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:06,921 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:06,921 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:06,921 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:06,921 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:06,922 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:06,922 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:06,922 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:06,922 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:06,922 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:06,922 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:06,922 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:06,922 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:06,922 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:06,923 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:06,924 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:06,924 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:06,924 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:06,924 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:06,927 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:06,928 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:06,928 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:06,928 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:06,929 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:06,929 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:06,929 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:06,930 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:06,931 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-13 07:28:06,945 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-13 07:28:06,958 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 07:28:06,958 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 07:28:06,958 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 07:28:06,958 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 07:28:06,958 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 07:28:06,958 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 07:28:06,959 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 07:28:06,959 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-13 07:28:06,966 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2021-06-13 07:28:06,990 INFO L129 PetriNetUnfolder]: 2/81 cut-off events. [2021-06-13 07:28:06,991 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:28:06,993 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 07:28:06,993 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 84 transitions, 183 flow [2021-06-13 07:28:06,996 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 69 transitions, 147 flow [2021-06-13 07:28:07,024 INFO L129 PetriNetUnfolder]: 1/68 cut-off events. [2021-06-13 07:28:07,025 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:28:07,025 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:28:07,025 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 07:28:07,026 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:28:07,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:28:07,031 INFO L82 PathProgramCache]: Analyzing trace with hash 663437649, now seen corresponding path program 1 times [2021-06-13 07:28:07,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:28:07,037 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713606957] [2021-06-13 07:28:07,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:28:07,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:28:07,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:07,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:28:07,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:07,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:28:07,304 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:28:07,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:28:07,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:07,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:28:07,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:07,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:28:07,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:07,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:28:07,349 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 07:28:07,350 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:28:07,350 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713606957] [2021-06-13 07:28:07,350 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713606957] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:28:07,351 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:28:07,351 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 07:28:07,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420278364] [2021-06-13 07:28:07,357 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-13 07:28:07,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:28:07,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-13 07:28:07,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-13 07:28:07,372 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 84 [2021-06-13 07:28:07,376 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 69 transitions, 147 flow. Second operand has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:07,379 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:28:07,380 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 84 [2021-06-13 07:28:07,381 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:28:07,515 INFO L129 PetriNetUnfolder]: 3/83 cut-off events. [2021-06-13 07:28:07,520 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:28:07,520 INFO L84 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 83 events. 3/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 90 event pairs, 0 based on Foata normal form. 4/86 useless extension candidates. Maximal degree in co-relation 82. Up to 7 conditions per place. [2021-06-13 07:28:07,521 INFO L132 encePairwiseOnDemand]: 77/84 looper letters, 6 selfloop transitions, 2 changer transitions 11/78 dead transitions. [2021-06-13 07:28:07,521 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 78 transitions, 201 flow [2021-06-13 07:28:07,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 07:28:07,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 07:28:07,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 670 transitions. [2021-06-13 07:28:07,540 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8862433862433863 [2021-06-13 07:28:07,541 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 670 transitions. [2021-06-13 07:28:07,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 670 transitions. [2021-06-13 07:28:07,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:28:07,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 670 transitions. [2021-06-13 07:28:07,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.44444444444444) internal successors, (670), 9 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:07,559 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 07:28:07,559 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 07:28:07,561 INFO L185 Difference]: Start difference. First operand has 78 places, 69 transitions, 147 flow. Second operand 9 states and 670 transitions. [2021-06-13 07:28:07,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 78 transitions, 201 flow [2021-06-13 07:28:07,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 78 transitions, 198 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-06-13 07:28:07,565 INFO L241 Difference]: Finished difference. Result has 90 places, 67 transitions, 160 flow [2021-06-13 07:28:07,567 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=160, PETRI_PLACES=90, PETRI_TRANSITIONS=67} [2021-06-13 07:28:07,567 INFO L335 CegarLoopForPetriNet]: 78 programPoint places, 12 predicate places. [2021-06-13 07:28:07,567 INFO L482 AbstractCegarLoop]: Abstraction has has 90 places, 67 transitions, 160 flow [2021-06-13 07:28:07,568 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 07:28:07,568 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:28:07,568 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 07:28:07,568 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-13 07:28:07,568 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:28:07,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:28:07,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1304909936, now seen corresponding path program 1 times [2021-06-13 07:28:07,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:28:07,569 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268270027] [2021-06-13 07:28:07,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:28:07,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:28:07,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:07,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:28:07,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:07,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:28:07,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:07,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:28:07,677 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:28:07,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:28:07,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:07,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:28:07,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:07,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:28:07,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:07,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:28:07,716 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 07:28:07,716 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:28:07,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268270027] [2021-06-13 07:28:07,717 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268270027] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:28:07,717 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:28:07,717 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:28:07,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167644736] [2021-06-13 07:28:07,718 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:28:07,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:28:07,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:28:07,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:28:07,720 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 84 [2021-06-13 07:28:07,720 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 67 transitions, 160 flow. Second operand has 7 states, 7 states have (on average 69.28571428571429) internal successors, (485), 7 states have internal predecessors, (485), 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 07:28:07,720 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:28:07,720 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 84 [2021-06-13 07:28:07,720 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:28:07,901 INFO L129 PetriNetUnfolder]: 51/201 cut-off events. [2021-06-13 07:28:07,901 INFO L130 PetriNetUnfolder]: For 53/101 co-relation queries the response was YES. [2021-06-13 07:28:07,902 INFO L84 FinitePrefix]: Finished finitePrefix Result has 401 conditions, 201 events. 51/201 cut-off events. For 53/101 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 712 event pairs, 11 based on Foata normal form. 6/199 useless extension candidates. Maximal degree in co-relation 365. Up to 43 conditions per place. [2021-06-13 07:28:07,903 INFO L132 encePairwiseOnDemand]: 75/84 looper letters, 13 selfloop transitions, 5 changer transitions 27/100 dead transitions. [2021-06-13 07:28:07,903 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 100 transitions, 339 flow [2021-06-13 07:28:07,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 07:28:07,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 07:28:07,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 727 transitions. [2021-06-13 07:28:07,905 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8654761904761905 [2021-06-13 07:28:07,905 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 727 transitions. [2021-06-13 07:28:07,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 727 transitions. [2021-06-13 07:28:07,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:28:07,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 727 transitions. [2021-06-13 07:28:07,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 72.7) internal successors, (727), 10 states have internal predecessors, (727), 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 07:28:07,908 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 07:28:07,908 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 07:28:07,908 INFO L185 Difference]: Start difference. First operand has 90 places, 67 transitions, 160 flow. Second operand 10 states and 727 transitions. [2021-06-13 07:28:07,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 100 transitions, 339 flow [2021-06-13 07:28:07,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 100 transitions, 305 flow, removed 14 selfloop flow, removed 8 redundant places. [2021-06-13 07:28:07,911 INFO L241 Difference]: Finished difference. Result has 92 places, 69 transitions, 198 flow [2021-06-13 07:28:07,911 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=198, PETRI_PLACES=92, PETRI_TRANSITIONS=69} [2021-06-13 07:28:07,912 INFO L335 CegarLoopForPetriNet]: 78 programPoint places, 14 predicate places. [2021-06-13 07:28:07,912 INFO L482 AbstractCegarLoop]: Abstraction has has 92 places, 69 transitions, 198 flow [2021-06-13 07:28:07,912 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 69.28571428571429) internal successors, (485), 7 states have internal predecessors, (485), 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 07:28:07,912 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:28:07,912 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 07:28:07,913 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-13 07:28:07,913 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:28:07,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:28:07,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1175247813, now seen corresponding path program 1 times [2021-06-13 07:28:07,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:28:07,913 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451611240] [2021-06-13 07:28:07,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:28:07,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:28:07,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:07,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:28:07,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:07,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:28:07,946 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:28:07,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:28:07,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:07,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:28:07,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:07,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:28:07,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:07,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:28:07,976 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 07:28:07,976 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:28:07,977 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451611240] [2021-06-13 07:28:07,977 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451611240] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:28:07,977 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:28:07,977 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 07:28:07,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014934436] [2021-06-13 07:28:07,977 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-13 07:28:07,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:28:07,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-13 07:28:07,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-13 07:28:07,978 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 84 [2021-06-13 07:28:07,979 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 69 transitions, 198 flow. Second operand has 6 states, 6 states have (on average 70.5) internal successors, (423), 6 states have internal predecessors, (423), 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 07:28:07,979 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:28:07,979 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 84 [2021-06-13 07:28:07,979 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:28:08,084 INFO L129 PetriNetUnfolder]: 15/167 cut-off events. [2021-06-13 07:28:08,084 INFO L130 PetriNetUnfolder]: For 157/234 co-relation queries the response was YES. [2021-06-13 07:28:08,085 INFO L84 FinitePrefix]: Finished finitePrefix Result has 369 conditions, 167 events. 15/167 cut-off events. For 157/234 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 586 event pairs, 0 based on Foata normal form. 4/169 useless extension candidates. Maximal degree in co-relation 334. Up to 22 conditions per place. [2021-06-13 07:28:08,085 INFO L132 encePairwiseOnDemand]: 78/84 looper letters, 16 selfloop transitions, 3 changer transitions 13/88 dead transitions. [2021-06-13 07:28:08,085 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 88 transitions, 362 flow [2021-06-13 07:28:08,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 07:28:08,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 07:28:08,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 654 transitions. [2021-06-13 07:28:08,087 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8650793650793651 [2021-06-13 07:28:08,087 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 654 transitions. [2021-06-13 07:28:08,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 654 transitions. [2021-06-13 07:28:08,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:28:08,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 654 transitions. [2021-06-13 07:28:08,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 72.66666666666667) internal successors, (654), 9 states have internal predecessors, (654), 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 07:28:08,090 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 07:28:08,090 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 07:28:08,090 INFO L185 Difference]: Start difference. First operand has 92 places, 69 transitions, 198 flow. Second operand 9 states and 654 transitions. [2021-06-13 07:28:08,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 88 transitions, 362 flow [2021-06-13 07:28:08,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 88 transitions, 321 flow, removed 16 selfloop flow, removed 5 redundant places. [2021-06-13 07:28:08,093 INFO L241 Difference]: Finished difference. Result has 96 places, 69 transitions, 204 flow [2021-06-13 07:28:08,093 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=204, PETRI_PLACES=96, PETRI_TRANSITIONS=69} [2021-06-13 07:28:08,093 INFO L335 CegarLoopForPetriNet]: 78 programPoint places, 18 predicate places. [2021-06-13 07:28:08,093 INFO L482 AbstractCegarLoop]: Abstraction has has 96 places, 69 transitions, 204 flow [2021-06-13 07:28:08,094 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 70.5) internal successors, (423), 6 states have internal predecessors, (423), 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 07:28:08,094 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:28:08,094 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 07:28:08,094 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-13 07:28:08,094 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:28:08,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:28:08,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1113786695, now seen corresponding path program 1 times [2021-06-13 07:28:08,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:28:08,094 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955847303] [2021-06-13 07:28:08,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:28:08,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:28:08,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:08,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:28:08,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:08,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:28:08,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:08,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:28:08,131 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:28:08,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:28:08,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:08,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:28:08,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:08,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:28:08,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:08,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:28:08,170 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 07:28:08,170 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:28:08,170 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955847303] [2021-06-13 07:28:08,170 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955847303] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:28:08,170 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:28:08,170 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:28:08,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301781127] [2021-06-13 07:28:08,171 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:28:08,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:28:08,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:28:08,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:28:08,172 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 84 [2021-06-13 07:28:08,173 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 69 transitions, 204 flow. Second operand has 7 states, 7 states have (on average 69.57142857142857) internal successors, (487), 7 states have internal predecessors, (487), 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 07:28:08,173 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:28:08,173 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 84 [2021-06-13 07:28:08,173 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:28:08,246 INFO L129 PetriNetUnfolder]: 7/129 cut-off events. [2021-06-13 07:28:08,246 INFO L130 PetriNetUnfolder]: For 196/272 co-relation queries the response was YES. [2021-06-13 07:28:08,247 INFO L84 FinitePrefix]: Finished finitePrefix Result has 295 conditions, 129 events. 7/129 cut-off events. For 196/272 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 400 event pairs, 2 based on Foata normal form. 5/133 useless extension candidates. Maximal degree in co-relation 274. Up to 17 conditions per place. [2021-06-13 07:28:08,248 INFO L132 encePairwiseOnDemand]: 75/84 looper letters, 9 selfloop transitions, 4 changer transitions 11/79 dead transitions. [2021-06-13 07:28:08,248 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 79 transitions, 334 flow [2021-06-13 07:28:08,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-13 07:28:08,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-13 07:28:08,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 501 transitions. [2021-06-13 07:28:08,249 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8520408163265306 [2021-06-13 07:28:08,250 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 501 transitions. [2021-06-13 07:28:08,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 501 transitions. [2021-06-13 07:28:08,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:28:08,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 501 transitions. [2021-06-13 07:28:08,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 71.57142857142857) internal successors, (501), 7 states have internal predecessors, (501), 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 07:28:08,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 84.0) internal successors, (672), 8 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:08,252 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 84.0) internal successors, (672), 8 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:08,252 INFO L185 Difference]: Start difference. First operand has 96 places, 69 transitions, 204 flow. Second operand 7 states and 501 transitions. [2021-06-13 07:28:08,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 79 transitions, 334 flow [2021-06-13 07:28:08,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 79 transitions, 287 flow, removed 20 selfloop flow, removed 7 redundant places. [2021-06-13 07:28:08,254 INFO L241 Difference]: Finished difference. Result has 93 places, 67 transitions, 186 flow [2021-06-13 07:28:08,254 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=186, PETRI_PLACES=93, PETRI_TRANSITIONS=67} [2021-06-13 07:28:08,254 INFO L335 CegarLoopForPetriNet]: 78 programPoint places, 15 predicate places. [2021-06-13 07:28:08,255 INFO L482 AbstractCegarLoop]: Abstraction has has 93 places, 67 transitions, 186 flow [2021-06-13 07:28:08,255 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 69.57142857142857) internal successors, (487), 7 states have internal predecessors, (487), 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 07:28:08,255 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:28:08,255 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 07:28:08,255 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-13 07:28:08,255 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:28:08,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:28:08,255 INFO L82 PathProgramCache]: Analyzing trace with hash -629988978, now seen corresponding path program 1 times [2021-06-13 07:28:08,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:28:08,256 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819367013] [2021-06-13 07:28:08,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:28:08,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:28:08,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:08,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:28:08,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:08,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:28:08,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:08,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:28:08,290 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:28:08,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:28:08,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:08,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:28:08,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:08,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:28:08,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:08,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:28:08,335 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 07:28:08,336 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:28:08,336 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819367013] [2021-06-13 07:28:08,336 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819367013] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:28:08,336 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:28:08,336 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:28:08,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056511512] [2021-06-13 07:28:08,337 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:28:08,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:28:08,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:28:08,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:28:08,338 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 84 [2021-06-13 07:28:08,338 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 67 transitions, 186 flow. Second operand has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 07:28:08,338 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:28:08,338 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 84 [2021-06-13 07:28:08,338 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:28:08,414 INFO L129 PetriNetUnfolder]: 1/86 cut-off events. [2021-06-13 07:28:08,414 INFO L130 PetriNetUnfolder]: For 52/70 co-relation queries the response was YES. [2021-06-13 07:28:08,415 INFO L84 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 86 events. 1/86 cut-off events. For 52/70 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 123 event pairs, 0 based on Foata normal form. 5/91 useless extension candidates. Maximal degree in co-relation 143. Up to 11 conditions per place. [2021-06-13 07:28:08,415 INFO L132 encePairwiseOnDemand]: 77/84 looper letters, 10 selfloop transitions, 2 changer transitions 7/74 dead transitions. [2021-06-13 07:28:08,415 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 74 transitions, 261 flow [2021-06-13 07:28:08,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 07:28:08,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-13 07:28:08,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 564 transitions. [2021-06-13 07:28:08,417 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8392857142857143 [2021-06-13 07:28:08,417 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 564 transitions. [2021-06-13 07:28:08,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 564 transitions. [2021-06-13 07:28:08,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:28:08,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 564 transitions. [2021-06-13 07:28:08,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 70.5) internal successors, (564), 8 states have internal predecessors, (564), 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 07:28:08,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 84.0) internal successors, (756), 9 states have internal predecessors, (756), 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 07:28:08,419 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 84.0) internal successors, (756), 9 states have internal predecessors, (756), 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 07:28:08,420 INFO L185 Difference]: Start difference. First operand has 93 places, 67 transitions, 186 flow. Second operand 8 states and 564 transitions. [2021-06-13 07:28:08,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 74 transitions, 261 flow [2021-06-13 07:28:08,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 74 transitions, 225 flow, removed 12 selfloop flow, removed 11 redundant places. [2021-06-13 07:28:08,422 INFO L241 Difference]: Finished difference. Result has 91 places, 67 transitions, 178 flow [2021-06-13 07:28:08,422 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=178, PETRI_PLACES=91, PETRI_TRANSITIONS=67} [2021-06-13 07:28:08,422 INFO L335 CegarLoopForPetriNet]: 78 programPoint places, 13 predicate places. [2021-06-13 07:28:08,422 INFO L482 AbstractCegarLoop]: Abstraction has has 91 places, 67 transitions, 178 flow [2021-06-13 07:28:08,422 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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 07:28:08,422 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:28:08,422 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 07:28:08,422 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-13 07:28:08,423 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:28:08,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:28:08,423 INFO L82 PathProgramCache]: Analyzing trace with hash -994518912, now seen corresponding path program 2 times [2021-06-13 07:28:08,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:28:08,423 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701330225] [2021-06-13 07:28:08,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:28:08,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:28:08,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:08,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:28:08,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:08,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:28:08,489 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-13 07:28:08,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 07:28:08,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:08,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:28:08,514 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 07:28:08,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:28:08,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:08,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:28:08,521 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 07:28:08,521 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:28:08,521 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701330225] [2021-06-13 07:28:08,522 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701330225] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:28:08,522 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:28:08,522 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 07:28:08,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655724371] [2021-06-13 07:28:08,522 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-13 07:28:08,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:28:08,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-13 07:28:08,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-13 07:28:08,523 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-06-13 07:28:08,524 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 67 transitions, 178 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 07:28:08,524 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:28:08,524 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-06-13 07:28:08,524 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:28:08,621 INFO L129 PetriNetUnfolder]: 91/316 cut-off events. [2021-06-13 07:28:08,621 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2021-06-13 07:28:08,622 INFO L84 FinitePrefix]: Finished finitePrefix Result has 561 conditions, 316 events. 91/316 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1542 event pairs, 12 based on Foata normal form. 8/316 useless extension candidates. Maximal degree in co-relation 529. Up to 81 conditions per place. [2021-06-13 07:28:08,623 INFO L132 encePairwiseOnDemand]: 75/84 looper letters, 10 selfloop transitions, 6 changer transitions 19/92 dead transitions. [2021-06-13 07:28:08,623 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 92 transitions, 298 flow [2021-06-13 07:28:08,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 07:28:08,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 07:28:08,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 667 transitions. [2021-06-13 07:28:08,624 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8822751322751323 [2021-06-13 07:28:08,624 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 667 transitions. [2021-06-13 07:28:08,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 667 transitions. [2021-06-13 07:28:08,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:28:08,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 667 transitions. [2021-06-13 07:28:08,626 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 07:28:08,627 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 07:28:08,627 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 07:28:08,627 INFO L185 Difference]: Start difference. First operand has 91 places, 67 transitions, 178 flow. Second operand 9 states and 667 transitions. [2021-06-13 07:28:08,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 92 transitions, 298 flow [2021-06-13 07:28:08,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 92 transitions, 276 flow, removed 6 selfloop flow, removed 8 redundant places. [2021-06-13 07:28:08,629 INFO L241 Difference]: Finished difference. Result has 92 places, 70 transitions, 212 flow [2021-06-13 07:28:08,629 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=212, PETRI_PLACES=92, PETRI_TRANSITIONS=70} [2021-06-13 07:28:08,629 INFO L335 CegarLoopForPetriNet]: 78 programPoint places, 14 predicate places. [2021-06-13 07:28:08,629 INFO L482 AbstractCegarLoop]: Abstraction has has 92 places, 70 transitions, 212 flow [2021-06-13 07:28:08,629 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 07:28:08,629 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:28:08,629 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 07:28:08,630 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-13 07:28:08,630 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:28:08,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:28:08,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1990162757, now seen corresponding path program 1 times [2021-06-13 07:28:08,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:28:08,630 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286746599] [2021-06-13 07:28:08,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:28:08,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:28:08,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:08,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:28:08,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:08,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:28:08,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:08,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:28:08,661 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-13 07:28:08,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 07:28:08,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:08,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:28:08,683 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 07:28:08,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:28:08,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:08,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:28:08,696 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 07:28:08,696 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:28:08,696 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286746599] [2021-06-13 07:28:08,696 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286746599] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:28:08,696 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:28:08,697 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:28:08,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198380960] [2021-06-13 07:28:08,697 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:28:08,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:28:08,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:28:08,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:28:08,698 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-06-13 07:28:08,699 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 70 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 07:28:08,699 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:28:08,699 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-06-13 07:28:08,699 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:28:08,817 INFO L129 PetriNetUnfolder]: 52/208 cut-off events. [2021-06-13 07:28:08,817 INFO L130 PetriNetUnfolder]: For 273/313 co-relation queries the response was YES. [2021-06-13 07:28:08,817 INFO L84 FinitePrefix]: Finished finitePrefix Result has 599 conditions, 208 events. 52/208 cut-off events. For 273/313 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 756 event pairs, 0 based on Foata normal form. 14/220 useless extension candidates. Maximal degree in co-relation 558. Up to 75 conditions per place. [2021-06-13 07:28:08,818 INFO L132 encePairwiseOnDemand]: 75/84 looper letters, 10 selfloop transitions, 9 changer transitions 19/95 dead transitions. [2021-06-13 07:28:08,818 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 95 transitions, 465 flow [2021-06-13 07:28:08,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 07:28:08,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 07:28:08,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 740 transitions. [2021-06-13 07:28:08,820 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8809523809523809 [2021-06-13 07:28:08,820 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 740 transitions. [2021-06-13 07:28:08,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 740 transitions. [2021-06-13 07:28:08,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:28:08,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 740 transitions. [2021-06-13 07:28:08,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 74.0) internal successors, (740), 10 states have internal predecessors, (740), 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 07:28:08,822 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 07:28:08,822 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 07:28:08,822 INFO L185 Difference]: Start difference. First operand has 92 places, 70 transitions, 212 flow. Second operand 10 states and 740 transitions. [2021-06-13 07:28:08,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 95 transitions, 465 flow [2021-06-13 07:28:08,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 95 transitions, 441 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-06-13 07:28:08,824 INFO L241 Difference]: Finished difference. Result has 98 places, 73 transitions, 280 flow [2021-06-13 07:28:08,825 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=280, PETRI_PLACES=98, PETRI_TRANSITIONS=73} [2021-06-13 07:28:08,825 INFO L335 CegarLoopForPetriNet]: 78 programPoint places, 20 predicate places. [2021-06-13 07:28:08,825 INFO L482 AbstractCegarLoop]: Abstraction has has 98 places, 73 transitions, 280 flow [2021-06-13 07:28:08,825 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 07:28:08,825 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:28:08,825 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 07:28:08,825 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-13 07:28:08,825 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:28:08,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:28:08,826 INFO L82 PathProgramCache]: Analyzing trace with hash 386324720, now seen corresponding path program 1 times [2021-06-13 07:28:08,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:28:08,826 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645123299] [2021-06-13 07:28:08,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:28:08,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:28:08,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:08,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:28:08,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:08,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:28:08,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:08,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:28:08,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:08,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:28:08,889 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-13 07:28:08,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 07:28:08,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:08,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:28:08,912 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 07:28:08,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:28:08,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:08,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:28:08,920 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 07:28:08,920 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:28:08,920 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645123299] [2021-06-13 07:28:08,920 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645123299] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:28:08,920 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:28:08,920 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 07:28:08,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851699816] [2021-06-13 07:28:08,921 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 07:28:08,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:28:08,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 07:28:08,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-13 07:28:08,922 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-06-13 07:28:08,923 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 73 transitions, 280 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 07:28:08,923 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:28:08,923 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-06-13 07:28:08,923 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:28:09,040 INFO L129 PetriNetUnfolder]: 16/113 cut-off events. [2021-06-13 07:28:09,040 INFO L130 PetriNetUnfolder]: For 396/445 co-relation queries the response was YES. [2021-06-13 07:28:09,040 INFO L84 FinitePrefix]: Finished finitePrefix Result has 360 conditions, 113 events. 16/113 cut-off events. For 396/445 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 215 event pairs, 0 based on Foata normal form. 14/126 useless extension candidates. Maximal degree in co-relation 334. Up to 30 conditions per place. [2021-06-13 07:28:09,041 INFO L132 encePairwiseOnDemand]: 75/84 looper letters, 4 selfloop transitions, 12 changer transitions 13/86 dead transitions. [2021-06-13 07:28:09,041 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 86 transitions, 464 flow [2021-06-13 07:28:09,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-13 07:28:09,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-13 07:28:09,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 801 transitions. [2021-06-13 07:28:09,043 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8668831168831169 [2021-06-13 07:28:09,043 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 801 transitions. [2021-06-13 07:28:09,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 801 transitions. [2021-06-13 07:28:09,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:28:09,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 801 transitions. [2021-06-13 07:28:09,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 72.81818181818181) internal successors, (801), 11 states have internal predecessors, (801), 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 07:28:09,046 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 07:28:09,046 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 07:28:09,046 INFO L185 Difference]: Start difference. First operand has 98 places, 73 transitions, 280 flow. Second operand 11 states and 801 transitions. [2021-06-13 07:28:09,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 86 transitions, 464 flow [2021-06-13 07:28:09,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 86 transitions, 365 flow, removed 39 selfloop flow, removed 10 redundant places. [2021-06-13 07:28:09,048 INFO L241 Difference]: Finished difference. Result has 100 places, 73 transitions, 266 flow [2021-06-13 07:28:09,048 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=266, PETRI_PLACES=100, PETRI_TRANSITIONS=73} [2021-06-13 07:28:09,049 INFO L335 CegarLoopForPetriNet]: 78 programPoint places, 22 predicate places. [2021-06-13 07:28:09,049 INFO L482 AbstractCegarLoop]: Abstraction has has 100 places, 73 transitions, 266 flow [2021-06-13 07:28:09,049 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 07:28:09,049 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:28:09,049 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:28:09,049 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-13 07:28:09,049 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:28:09,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:28:09,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1643255353, now seen corresponding path program 1 times [2021-06-13 07:28:09,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:28:09,050 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649470009] [2021-06-13 07:28:09,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:28:09,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:28:09,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:09,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:28:09,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:09,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:28:09,104 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-13 07:28:09,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 07:28:09,111 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:28:09,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:28:09,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:09,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:28:09,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:09,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:28:09,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:09,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:28:09,138 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 07:28:09,138 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:28:09,138 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649470009] [2021-06-13 07:28:09,140 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649470009] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:28:09,140 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:28:09,140 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:28:09,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640620801] [2021-06-13 07:28:09,140 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:28:09,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:28:09,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:28:09,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:28:09,141 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 84 [2021-06-13 07:28:09,142 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 73 transitions, 266 flow. Second operand has 7 states, 7 states have (on average 65.42857142857143) internal successors, (458), 7 states have internal predecessors, (458), 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 07:28:09,142 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:28:09,142 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 84 [2021-06-13 07:28:09,142 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:28:09,212 INFO L129 PetriNetUnfolder]: 5/82 cut-off events. [2021-06-13 07:28:09,212 INFO L130 PetriNetUnfolder]: For 77/84 co-relation queries the response was YES. [2021-06-13 07:28:09,213 INFO L84 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 82 events. 5/82 cut-off events. For 77/84 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 82 event pairs, 0 based on Foata normal form. 2/83 useless extension candidates. Maximal degree in co-relation 158. Up to 11 conditions per place. [2021-06-13 07:28:09,213 INFO L132 encePairwiseOnDemand]: 74/84 looper letters, 0 selfloop transitions, 0 changer transitions 71/71 dead transitions. [2021-06-13 07:28:09,213 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 71 transitions, 294 flow [2021-06-13 07:28:09,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 07:28:09,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-13 07:28:09,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 521 transitions. [2021-06-13 07:28:09,214 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7752976190476191 [2021-06-13 07:28:09,214 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 521 transitions. [2021-06-13 07:28:09,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 521 transitions. [2021-06-13 07:28:09,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:28:09,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 521 transitions. [2021-06-13 07:28:09,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 65.125) internal successors, (521), 8 states have internal predecessors, (521), 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 07:28:09,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 84.0) internal successors, (756), 9 states have internal predecessors, (756), 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 07:28:09,216 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 84.0) internal successors, (756), 9 states have internal predecessors, (756), 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 07:28:09,216 INFO L185 Difference]: Start difference. First operand has 100 places, 73 transitions, 266 flow. Second operand 8 states and 521 transitions. [2021-06-13 07:28:09,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 71 transitions, 294 flow [2021-06-13 07:28:09,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 71 transitions, 212 flow, removed 22 selfloop flow, removed 15 redundant places. [2021-06-13 07:28:09,218 INFO L241 Difference]: Finished difference. Result has 86 places, 0 transitions, 0 flow [2021-06-13 07:28:09,218 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=86, PETRI_TRANSITIONS=0} [2021-06-13 07:28:09,218 INFO L335 CegarLoopForPetriNet]: 78 programPoint places, 8 predicate places. [2021-06-13 07:28:09,218 INFO L482 AbstractCegarLoop]: Abstraction has has 86 places, 0 transitions, 0 flow [2021-06-13 07:28:09,218 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 65.42857142857143) internal successors, (458), 7 states have internal predecessors, (458), 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 07:28:09,218 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-13 07:28:09,220 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-13 07:28:09,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.06 07:28:09 BasicIcfg [2021-06-13 07:28:09,222 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-13 07:28:09,224 INFO L168 Benchmark]: Toolchain (without parser) took 3201.45 ms. Allocated memory was 199.2 MB in the beginning and 290.5 MB in the end (delta: 91.2 MB). Free memory was 162.6 MB in the beginning and 178.6 MB in the end (delta: -16.0 MB). Peak memory consumption was 76.3 MB. Max. memory is 8.0 GB. [2021-06-13 07:28:09,225 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 199.2 MB. Free memory is still 180.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-13 07:28:09,225 INFO L168 Benchmark]: CACSL2BoogieTranslator took 411.37 ms. Allocated memory is still 199.2 MB. Free memory was 162.4 MB in the beginning and 162.1 MB in the end (delta: 311.4 kB). Peak memory consumption was 16.3 MB. Max. memory is 8.0 GB. [2021-06-13 07:28:09,227 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.01 ms. Allocated memory is still 199.2 MB. Free memory was 162.1 MB in the beginning and 160.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-13 07:28:09,227 INFO L168 Benchmark]: Boogie Preprocessor took 30.76 ms. Allocated memory is still 199.2 MB. Free memory was 160.6 MB in the beginning and 159.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-13 07:28:09,227 INFO L168 Benchmark]: RCFGBuilder took 376.40 ms. Allocated memory is still 199.2 MB. Free memory was 159.0 MB in the beginning and 135.4 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2021-06-13 07:28:09,227 INFO L168 Benchmark]: TraceAbstraction took 2329.77 ms. Allocated memory was 199.2 MB in the beginning and 290.5 MB in the end (delta: 91.2 MB). Free memory was 134.9 MB in the beginning and 178.6 MB in the end (delta: -43.7 MB). Peak memory consumption was 47.5 MB. Max. memory is 8.0 GB. [2021-06-13 07:28:09,230 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 199.2 MB. Free memory is still 180.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 411.37 ms. Allocated memory is still 199.2 MB. Free memory was 162.4 MB in the beginning and 162.1 MB in the end (delta: 311.4 kB). Peak memory consumption was 16.3 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 46.01 ms. Allocated memory is still 199.2 MB. Free memory was 162.1 MB in the beginning and 160.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 30.76 ms. Allocated memory is still 199.2 MB. Free memory was 160.6 MB in the beginning and 159.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 376.40 ms. Allocated memory is still 199.2 MB. Free memory was 159.0 MB in the beginning and 135.4 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2329.77 ms. Allocated memory was 199.2 MB in the beginning and 290.5 MB in the end (delta: 91.2 MB). Free memory was 134.9 MB in the beginning and 178.6 MB in the end (delta: -43.7 MB). Peak memory consumption was 47.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 25.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2263.5ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1120.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 37.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 83 SDtfs, 178 SDslu, 266 SDs, 0 SdLazy, 361 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 224.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 108 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 768.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=280occurred in iteration=7, InterpolantAutomatonStates: 81, 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: 18.1ms SsaConstructionTime, 190.2ms SatisfiabilityAnalysisTime, 729.5ms InterpolantComputationTime, 500 NumberOfCodeBlocks, 500 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 491 ConstructedInterpolants, 0 QuantifiedInterpolants, 1421 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...