/usr/bin/java -Xmx16000000000 -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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe027_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 19:56:32,847 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 19:56:32,848 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 19:56:32,875 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 19:56:32,875 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 19:56:32,880 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 19:56:32,882 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 19:56:32,886 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 19:56:32,888 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 19:56:32,891 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 19:56:32,891 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 19:56:32,892 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 19:56:32,892 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 19:56:32,894 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 19:56:32,895 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 19:56:32,896 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 19:56:32,896 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 19:56:32,897 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 19:56:32,900 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 19:56:32,907 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 19:56:32,908 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 19:56:32,909 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 19:56:32,909 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 19:56:32,911 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 19:56:32,915 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 19:56:32,917 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-24 19:56:32,918 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-24 19:56:32,918 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-24 19:56:32,918 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-24 19:56:32,919 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-24 19:56:32,919 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-24 19:56:32,919 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-24 19:56:32,920 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-24 19:56:32,920 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 19:56:32,920 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 19:56:32,921 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 19:56:32,921 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-SemanticLbe.epf [2021-03-24 19:56:32,947 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 19:56:32,947 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 19:56:32,950 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 19:56:32,950 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 19:56:32,950 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 19:56:32,950 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 19:56:32,950 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 19:56:32,950 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 19:56:32,950 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 19:56:32,951 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 19:56:32,951 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 19:56:32,951 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 19:56:32,951 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 19:56:32,951 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 19:56:32,952 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 19:56:32,952 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 19:56:32,952 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 19:56:32,952 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 19:56:32,952 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 19:56:32,952 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 19:56:32,952 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 19:56:32,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 19:56:32,952 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 19:56:32,953 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 19:56:32,953 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 19:56:32,953 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 19:56:32,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 19:56:32,953 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 19:56:32,953 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 19:56:33,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 19:56:33,174 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 19:56:33,176 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 19:56:33,177 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 19:56:33,177 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 19:56:33,178 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe027_tso.opt.i [2021-03-24 19:56:33,223 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79c64b128/07f8c7e87c8344098d615a2289ea469f/FLAG043390e6f [2021-03-24 19:56:33,569 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 19:56:33,569 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe027_tso.opt.i [2021-03-24 19:56:33,588 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79c64b128/07f8c7e87c8344098d615a2289ea469f/FLAG043390e6f [2021-03-24 19:56:33,955 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79c64b128/07f8c7e87c8344098d615a2289ea469f [2021-03-24 19:56:33,957 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 19:56:33,958 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 19:56:33,958 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 19:56:33,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 19:56:33,962 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 19:56:33,962 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 07:56:33" (1/1) ... [2021-03-24 19:56:33,963 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f14a45b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:56:33, skipping insertion in model container [2021-03-24 19:56:33,964 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 07:56:33" (1/1) ... [2021-03-24 19:56:33,967 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 19:56:33,997 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 19:56:34,074 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe027_tso.opt.i[949,962] [2021-03-24 19:56:34,224 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 19:56:34,231 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 19:56:34,241 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe027_tso.opt.i[949,962] [2021-03-24 19:56:34,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 19:56:34,320 INFO L208 MainTranslator]: Completed translation [2021-03-24 19:56:34,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:56:34 WrapperNode [2021-03-24 19:56:34,320 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 19:56:34,321 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 19:56:34,321 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 19:56:34,322 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 19:56:34,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:56:34" (1/1) ... [2021-03-24 19:56:34,349 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:56:34" (1/1) ... [2021-03-24 19:56:34,361 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 19:56:34,362 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 19:56:34,362 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 19:56:34,362 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 19:56:34,367 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:56:34" (1/1) ... [2021-03-24 19:56:34,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:56:34" (1/1) ... [2021-03-24 19:56:34,368 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:56:34" (1/1) ... [2021-03-24 19:56:34,368 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:56:34" (1/1) ... [2021-03-24 19:56:34,371 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:56:34" (1/1) ... [2021-03-24 19:56:34,373 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:56:34" (1/1) ... [2021-03-24 19:56:34,374 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:56:34" (1/1) ... [2021-03-24 19:56:34,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 19:56:34,376 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 19:56:34,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 19:56:34,376 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 19:56:34,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:56:34" (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 [2021-03-24 19:56:34,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 19:56:34,422 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-24 19:56:34,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 19:56:34,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 19:56:34,422 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-24 19:56:34,422 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-24 19:56:34,423 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-24 19:56:34,423 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-24 19:56:34,424 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-24 19:56:34,424 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-24 19:56:34,424 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-03-24 19:56:34,424 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-03-24 19:56:34,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 19:56:34,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-24 19:56:34,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 19:56:34,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 19:56:34,425 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 19:56:34,700 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 19:56:34,700 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-24 19:56:34,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 07:56:34 BoogieIcfgContainer [2021-03-24 19:56:34,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 19:56:34,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 19:56:34,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 19:56:34,704 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 19:56:34,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 07:56:33" (1/3) ... [2021-03-24 19:56:34,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2617aa9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 07:56:34, skipping insertion in model container [2021-03-24 19:56:34,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:56:34" (2/3) ... [2021-03-24 19:56:34,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2617aa9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 07:56:34, skipping insertion in model container [2021-03-24 19:56:34,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 07:56:34" (3/3) ... [2021-03-24 19:56:34,705 INFO L111 eAbstractionObserver]: Analyzing ICFG safe027_tso.opt.i [2021-03-24 19:56:34,714 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 19:56:34,717 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 19:56:34,718 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 19:56:34,738 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,738 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,738 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,738 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,738 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,738 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,738 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,738 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,739 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,739 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,739 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,739 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,739 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,739 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,739 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,739 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,740 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,740 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,740 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,740 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,743 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,743 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,744 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,744 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,744 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,744 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,744 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,744 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,744 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,744 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,744 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,745 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,745 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,745 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,745 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,745 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,745 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,745 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,745 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,745 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,746 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,746 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,746 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,746 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,746 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,746 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,746 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,746 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,747 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,747 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,747 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,748 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,753 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,753 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,753 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,753 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,755 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,755 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,755 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,755 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,757 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,757 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,757 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,757 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:56:34,758 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 19:56:34,769 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-24 19:56:34,782 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 19:56:34,782 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 19:56:34,782 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 19:56:34,782 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 19:56:34,782 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 19:56:34,782 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 19:56:34,782 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 19:56:34,783 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 19:56:34,789 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 98 places, 87 transitions, 194 flow [2021-03-24 19:56:34,817 INFO L129 PetriNetUnfolder]: 2/83 cut-off events. [2021-03-24 19:56:34,817 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:56:34,819 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 83 events. 2/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 64 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2021-03-24 19:56:34,820 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 87 transitions, 194 flow [2021-03-24 19:56:34,822 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 69 transitions, 150 flow [2021-03-24 19:56:34,823 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-24 19:56:34,831 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 69 transitions, 150 flow [2021-03-24 19:56:34,832 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 69 transitions, 150 flow [2021-03-24 19:56:34,833 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 69 transitions, 150 flow [2021-03-24 19:56:34,854 INFO L129 PetriNetUnfolder]: 1/69 cut-off events. [2021-03-24 19:56:34,855 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:56:34,855 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 69 events. 1/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2021-03-24 19:56:34,857 INFO L142 LiptonReduction]: Number of co-enabled transitions 1250 [2021-03-24 19:56:36,277 INFO L154 LiptonReduction]: Checked pairs total: 1387 [2021-03-24 19:56:36,278 INFO L156 LiptonReduction]: Total number of compositions: 44 [2021-03-24 19:56:36,279 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1457 [2021-03-24 19:56:36,287 INFO L129 PetriNetUnfolder]: 0/24 cut-off events. [2021-03-24 19:56:36,287 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:56:36,287 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:56:36,288 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:56:36,288 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:56:36,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:56:36,291 INFO L82 PathProgramCache]: Analyzing trace with hash 654156635, now seen corresponding path program 1 times [2021-03-24 19:56:36,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:56:36,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103679447] [2021-03-24 19:56:36,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:56:36,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:56:36,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:36,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:56:36,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:36,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:36,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:56:36,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103679447] [2021-03-24 19:56:36,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:56:36,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 19:56:36,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456770354] [2021-03-24 19:56:36,471 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 19:56:36,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:56:36,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 19:56:36,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 19:56:36,480 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 131 [2021-03-24 19:56:36,481 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 25 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 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) [2021-03-24 19:56:36,481 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:56:36,481 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 131 [2021-03-24 19:56:36,482 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:56:36,491 INFO L129 PetriNetUnfolder]: 0/25 cut-off events. [2021-03-24 19:56:36,491 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:56:36,492 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 25 events. 0/25 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 1/26 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-24 19:56:36,492 INFO L132 encePairwiseOnDemand]: 128/131 looper letters, 1 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2021-03-24 19:56:36,492 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 25 transitions, 68 flow [2021-03-24 19:56:36,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 19:56:36,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 19:56:36,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 361 transitions. [2021-03-24 19:56:36,501 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9185750636132316 [2021-03-24 19:56:36,501 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 361 transitions. [2021-03-24 19:56:36,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 361 transitions. [2021-03-24 19:56:36,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:56:36,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 361 transitions. [2021-03-24 19:56:36,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:36,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 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) [2021-03-24 19:56:36,509 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 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) [2021-03-24 19:56:36,510 INFO L185 Difference]: Start difference. First operand has 38 places, 25 transitions, 62 flow. Second operand 3 states and 361 transitions. [2021-03-24 19:56:36,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 25 transitions, 68 flow [2021-03-24 19:56:36,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 25 transitions, 64 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-24 19:56:36,512 INFO L241 Difference]: Finished difference. Result has 37 places, 25 transitions, 66 flow [2021-03-24 19:56:36,514 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=37, PETRI_TRANSITIONS=25} [2021-03-24 19:56:36,514 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, -1 predicate places. [2021-03-24 19:56:36,514 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 25 transitions, 66 flow [2021-03-24 19:56:36,514 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 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) [2021-03-24 19:56:36,514 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:56:36,514 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:56:36,515 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 19:56:36,515 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:56:36,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:56:36,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1195981847, now seen corresponding path program 1 times [2021-03-24 19:56:36,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:56:36,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667675] [2021-03-24 19:56:36,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:56:36,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:56:36,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:36,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:56:36,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:36,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:36,600 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 19:56:36,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 19:56:36,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:56:36,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667675] [2021-03-24 19:56:36,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:56:36,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:56:36,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867880542] [2021-03-24 19:56:36,619 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:56:36,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:56:36,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:56:36,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:56:36,627 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 131 [2021-03-24 19:56:36,628 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 25 transitions, 66 flow. Second operand has 4 states, 4 states have (on average 105.25) internal successors, (421), 4 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:36,628 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:56:36,628 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 131 [2021-03-24 19:56:36,628 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:56:36,704 INFO L129 PetriNetUnfolder]: 38/104 cut-off events. [2021-03-24 19:56:36,704 INFO L130 PetriNetUnfolder]: For 26/76 co-relation queries the response was YES. [2021-03-24 19:56:36,706 INFO L84 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 104 events. 38/104 cut-off events. For 26/76 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 356 event pairs, 3 based on Foata normal form. 4/98 useless extension candidates. Maximal degree in co-relation 198. Up to 43 conditions per place. [2021-03-24 19:56:36,707 INFO L132 encePairwiseOnDemand]: 123/131 looper letters, 11 selfloop transitions, 12 changer transitions 0/39 dead transitions. [2021-03-24 19:56:36,707 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 39 transitions, 151 flow [2021-03-24 19:56:36,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 19:56:36,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 19:56:36,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 545 transitions. [2021-03-24 19:56:36,712 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8320610687022901 [2021-03-24 19:56:36,712 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 545 transitions. [2021-03-24 19:56:36,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 545 transitions. [2021-03-24 19:56:36,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:56:36,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 545 transitions. [2021-03-24 19:56:36,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 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) [2021-03-24 19:56:36,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 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) [2021-03-24 19:56:36,717 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 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) [2021-03-24 19:56:36,717 INFO L185 Difference]: Start difference. First operand has 37 places, 25 transitions, 66 flow. Second operand 5 states and 545 transitions. [2021-03-24 19:56:36,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 39 transitions, 151 flow [2021-03-24 19:56:36,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 39 transitions, 141 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 19:56:36,719 INFO L241 Difference]: Finished difference. Result has 42 places, 34 transitions, 144 flow [2021-03-24 19:56:36,719 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=144, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2021-03-24 19:56:36,719 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 4 predicate places. [2021-03-24 19:56:36,720 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 144 flow [2021-03-24 19:56:36,720 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 105.25) internal successors, (421), 4 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:36,720 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:56:36,720 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:56:36,720 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 19:56:36,720 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:56:36,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:56:36,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1579266487, now seen corresponding path program 1 times [2021-03-24 19:56:36,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:56:36,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528607468] [2021-03-24 19:56:36,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:56:36,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:56:36,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:36,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:56:36,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:36,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:36,800 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 19:56:36,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 19:56:36,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:56:36,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528607468] [2021-03-24 19:56:36,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:56:36,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:56:36,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9253855] [2021-03-24 19:56:36,810 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:56:36,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:56:36,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:56:36,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:56:36,812 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 131 [2021-03-24 19:56:36,812 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 144 flow. Second operand has 4 states, 4 states have (on average 111.25) internal successors, (445), 4 states have internal predecessors, (445), 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) [2021-03-24 19:56:36,813 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:56:36,815 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 131 [2021-03-24 19:56:36,815 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:56:36,843 INFO L129 PetriNetUnfolder]: 20/79 cut-off events. [2021-03-24 19:56:36,843 INFO L130 PetriNetUnfolder]: For 91/237 co-relation queries the response was YES. [2021-03-24 19:56:36,844 INFO L84 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 79 events. 20/79 cut-off events. For 91/237 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 254 event pairs, 4 based on Foata normal form. 2/72 useless extension candidates. Maximal degree in co-relation 229. Up to 37 conditions per place. [2021-03-24 19:56:36,848 INFO L132 encePairwiseOnDemand]: 127/131 looper letters, 14 selfloop transitions, 5 changer transitions 0/38 dead transitions. [2021-03-24 19:56:36,848 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 38 transitions, 206 flow [2021-03-24 19:56:36,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 19:56:36,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 19:56:36,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 450 transitions. [2021-03-24 19:56:36,852 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8587786259541985 [2021-03-24 19:56:36,852 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 450 transitions. [2021-03-24 19:56:36,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 450 transitions. [2021-03-24 19:56:36,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:56:36,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 450 transitions. [2021-03-24 19:56:36,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 112.5) internal successors, (450), 4 states have internal predecessors, (450), 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) [2021-03-24 19:56:36,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 131.0) internal successors, (655), 5 states have internal predecessors, (655), 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) [2021-03-24 19:56:36,854 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 131.0) internal successors, (655), 5 states have internal predecessors, (655), 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) [2021-03-24 19:56:36,854 INFO L185 Difference]: Start difference. First operand has 42 places, 34 transitions, 144 flow. Second operand 4 states and 450 transitions. [2021-03-24 19:56:36,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 38 transitions, 206 flow [2021-03-24 19:56:36,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 38 transitions, 199 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 19:56:36,856 INFO L241 Difference]: Finished difference. Result has 45 places, 34 transitions, 154 flow [2021-03-24 19:56:36,856 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2021-03-24 19:56:36,856 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 7 predicate places. [2021-03-24 19:56:36,856 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 154 flow [2021-03-24 19:56:36,856 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 111.25) internal successors, (445), 4 states have internal predecessors, (445), 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) [2021-03-24 19:56:36,857 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:56:36,857 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:56:36,857 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 19:56:36,857 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:56:36,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:56:36,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1903389301, now seen corresponding path program 1 times [2021-03-24 19:56:36,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:56:36,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096484295] [2021-03-24 19:56:36,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:56:36,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:56:36,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:36,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:56:36,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:36,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:36,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:36,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:36,892 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 19:56:36,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 19:56:36,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:56:36,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096484295] [2021-03-24 19:56:36,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:56:36,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:56:36,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850706271] [2021-03-24 19:56:36,903 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:56:36,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:56:36,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:56:36,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:56:36,904 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 131 [2021-03-24 19:56:36,904 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 154 flow. Second operand has 5 states, 5 states have (on average 105.2) internal successors, (526), 5 states have internal predecessors, (526), 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) [2021-03-24 19:56:36,905 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:56:36,905 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 131 [2021-03-24 19:56:36,905 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:56:36,937 INFO L129 PetriNetUnfolder]: 25/90 cut-off events. [2021-03-24 19:56:36,937 INFO L130 PetriNetUnfolder]: For 195/380 co-relation queries the response was YES. [2021-03-24 19:56:36,938 INFO L84 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 90 events. 25/90 cut-off events. For 195/380 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 308 event pairs, 2 based on Foata normal form. 6/90 useless extension candidates. Maximal degree in co-relation 274. Up to 39 conditions per place. [2021-03-24 19:56:36,939 INFO L132 encePairwiseOnDemand]: 126/131 looper letters, 9 selfloop transitions, 6 changer transitions 10/41 dead transitions. [2021-03-24 19:56:36,939 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 41 transitions, 253 flow [2021-03-24 19:56:36,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 19:56:36,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 19:56:36,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 434 transitions. [2021-03-24 19:56:36,941 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8282442748091603 [2021-03-24 19:56:36,941 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 434 transitions. [2021-03-24 19:56:36,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 434 transitions. [2021-03-24 19:56:36,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:56:36,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 434 transitions. [2021-03-24 19:56:36,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 108.5) internal successors, (434), 4 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:56:36,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 131.0) internal successors, (655), 5 states have internal predecessors, (655), 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) [2021-03-24 19:56:36,943 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 131.0) internal successors, (655), 5 states have internal predecessors, (655), 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) [2021-03-24 19:56:36,943 INFO L185 Difference]: Start difference. First operand has 45 places, 34 transitions, 154 flow. Second operand 4 states and 434 transitions. [2021-03-24 19:56:36,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 41 transitions, 253 flow [2021-03-24 19:56:36,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 41 transitions, 239 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-24 19:56:36,948 INFO L241 Difference]: Finished difference. Result has 47 places, 29 transitions, 142 flow [2021-03-24 19:56:36,948 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=47, PETRI_TRANSITIONS=29} [2021-03-24 19:56:36,948 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 9 predicate places. [2021-03-24 19:56:36,948 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 29 transitions, 142 flow [2021-03-24 19:56:36,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 105.2) internal successors, (526), 5 states have internal predecessors, (526), 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) [2021-03-24 19:56:36,948 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:56:36,949 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:56:36,949 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 19:56:36,949 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:56:36,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:56:36,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1509026904, now seen corresponding path program 1 times [2021-03-24 19:56:36,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:56:36,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987410055] [2021-03-24 19:56:36,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:56:36,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:56:36,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:36,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:56:36,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:36,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:36,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:36,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:36,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:56:36,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987410055] [2021-03-24 19:56:36,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:56:36,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:56:36,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495996332] [2021-03-24 19:56:36,992 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:56:36,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:56:36,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:56:36,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:56:36,994 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 131 [2021-03-24 19:56:36,994 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 29 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 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) [2021-03-24 19:56:36,994 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:56:36,994 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 131 [2021-03-24 19:56:36,994 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:56:37,016 INFO L129 PetriNetUnfolder]: 18/77 cut-off events. [2021-03-24 19:56:37,016 INFO L130 PetriNetUnfolder]: For 191/192 co-relation queries the response was YES. [2021-03-24 19:56:37,016 INFO L84 FinitePrefix]: Finished finitePrefix Result has 248 conditions, 77 events. 18/77 cut-off events. For 191/192 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 230 event pairs, 9 based on Foata normal form. 8/82 useless extension candidates. Maximal degree in co-relation 222. Up to 36 conditions per place. [2021-03-24 19:56:37,017 INFO L132 encePairwiseOnDemand]: 126/131 looper letters, 4 selfloop transitions, 6 changer transitions 3/34 dead transitions. [2021-03-24 19:56:37,017 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 34 transitions, 199 flow [2021-03-24 19:56:37,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 19:56:37,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 19:56:37,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 459 transitions. [2021-03-24 19:56:37,018 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8759541984732825 [2021-03-24 19:56:37,018 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 459 transitions. [2021-03-24 19:56:37,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 459 transitions. [2021-03-24 19:56:37,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:56:37,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 459 transitions. [2021-03-24 19:56:37,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 114.75) internal successors, (459), 4 states have internal predecessors, (459), 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) [2021-03-24 19:56:37,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 131.0) internal successors, (655), 5 states have internal predecessors, (655), 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) [2021-03-24 19:56:37,021 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 131.0) internal successors, (655), 5 states have internal predecessors, (655), 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) [2021-03-24 19:56:37,021 INFO L185 Difference]: Start difference. First operand has 47 places, 29 transitions, 142 flow. Second operand 4 states and 459 transitions. [2021-03-24 19:56:37,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 34 transitions, 199 flow [2021-03-24 19:56:37,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 34 transitions, 175 flow, removed 3 selfloop flow, removed 5 redundant places. [2021-03-24 19:56:37,023 INFO L241 Difference]: Finished difference. Result has 47 places, 29 transitions, 143 flow [2021-03-24 19:56:37,024 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=143, PETRI_PLACES=47, PETRI_TRANSITIONS=29} [2021-03-24 19:56:37,024 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 9 predicate places. [2021-03-24 19:56:37,024 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 29 transitions, 143 flow [2021-03-24 19:56:37,024 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 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) [2021-03-24 19:56:37,024 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:56:37,024 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:56:37,024 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 19:56:37,024 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:56:37,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:56:37,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1425185742, now seen corresponding path program 1 times [2021-03-24 19:56:37,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:56:37,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629808798] [2021-03-24 19:56:37,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:56:37,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:56:37,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:37,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:56:37,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:37,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:37,050 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-24 19:56:37,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 19:56:37,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:37,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:56:37,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:56:37,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629808798] [2021-03-24 19:56:37,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:56:37,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:56:37,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472827454] [2021-03-24 19:56:37,056 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:56:37,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:56:37,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:56:37,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:56:37,057 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 131 [2021-03-24 19:56:37,057 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 29 transitions, 143 flow. Second operand has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 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) [2021-03-24 19:56:37,057 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:56:37,057 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 131 [2021-03-24 19:56:37,058 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:56:37,106 INFO L129 PetriNetUnfolder]: 199/371 cut-off events. [2021-03-24 19:56:37,106 INFO L130 PetriNetUnfolder]: For 561/606 co-relation queries the response was YES. [2021-03-24 19:56:37,107 INFO L84 FinitePrefix]: Finished finitePrefix Result has 951 conditions, 371 events. 199/371 cut-off events. For 561/606 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 1828 event pairs, 108 based on Foata normal form. 31/355 useless extension candidates. Maximal degree in co-relation 926. Up to 235 conditions per place. [2021-03-24 19:56:37,110 INFO L132 encePairwiseOnDemand]: 124/131 looper letters, 10 selfloop transitions, 10 changer transitions 0/42 dead transitions. [2021-03-24 19:56:37,110 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 42 transitions, 209 flow [2021-03-24 19:56:37,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 19:56:37,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 19:56:37,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 542 transitions. [2021-03-24 19:56:37,111 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274809160305343 [2021-03-24 19:56:37,111 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 542 transitions. [2021-03-24 19:56:37,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 542 transitions. [2021-03-24 19:56:37,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:56:37,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 542 transitions. [2021-03-24 19:56:37,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.4) internal successors, (542), 5 states have internal predecessors, (542), 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) [2021-03-24 19:56:37,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 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) [2021-03-24 19:56:37,115 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 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) [2021-03-24 19:56:37,115 INFO L185 Difference]: Start difference. First operand has 47 places, 29 transitions, 143 flow. Second operand 5 states and 542 transitions. [2021-03-24 19:56:37,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 42 transitions, 209 flow [2021-03-24 19:56:37,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 42 transitions, 191 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-03-24 19:56:37,116 INFO L241 Difference]: Finished difference. Result has 50 places, 38 transitions, 200 flow [2021-03-24 19:56:37,117 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=200, PETRI_PLACES=50, PETRI_TRANSITIONS=38} [2021-03-24 19:56:37,117 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 12 predicate places. [2021-03-24 19:56:37,117 INFO L480 AbstractCegarLoop]: Abstraction has has 50 places, 38 transitions, 200 flow [2021-03-24 19:56:37,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 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) [2021-03-24 19:56:37,117 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:56:37,117 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:56:37,117 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 19:56:37,117 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:56:37,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:56:37,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1231425513, now seen corresponding path program 1 times [2021-03-24 19:56:37,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:56:37,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083014094] [2021-03-24 19:56:37,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:56:37,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:56:37,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:37,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:56:37,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:37,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:37,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:37,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:37,168 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-24 19:56:37,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 19:56:37,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:37,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:56:37,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:56:37,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083014094] [2021-03-24 19:56:37,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:56:37,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 19:56:37,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37349141] [2021-03-24 19:56:37,175 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:56:37,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:56:37,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:56:37,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:56:37,176 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 131 [2021-03-24 19:56:37,176 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 38 transitions, 200 flow. Second operand has 5 states, 5 states have (on average 104.8) internal successors, (524), 5 states have internal predecessors, (524), 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) [2021-03-24 19:56:37,177 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:56:37,177 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 131 [2021-03-24 19:56:37,177 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:56:37,242 INFO L129 PetriNetUnfolder]: 163/336 cut-off events. [2021-03-24 19:56:37,242 INFO L130 PetriNetUnfolder]: For 513/938 co-relation queries the response was YES. [2021-03-24 19:56:37,243 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1300 conditions, 336 events. 163/336 cut-off events. For 513/938 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 1665 event pairs, 39 based on Foata normal form. 85/388 useless extension candidates. Maximal degree in co-relation 1275. Up to 250 conditions per place. [2021-03-24 19:56:37,245 INFO L132 encePairwiseOnDemand]: 124/131 looper letters, 10 selfloop transitions, 19 changer transitions 0/51 dead transitions. [2021-03-24 19:56:37,245 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 51 transitions, 334 flow [2021-03-24 19:56:37,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 19:56:37,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 19:56:37,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 759 transitions. [2021-03-24 19:56:37,246 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8276990185387132 [2021-03-24 19:56:37,247 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 759 transitions. [2021-03-24 19:56:37,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 759 transitions. [2021-03-24 19:56:37,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:56:37,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 759 transitions. [2021-03-24 19:56:37,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 108.42857142857143) internal successors, (759), 7 states have internal predecessors, (759), 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) [2021-03-24 19:56:37,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 131.0) internal successors, (1048), 8 states have internal predecessors, (1048), 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) [2021-03-24 19:56:37,250 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 131.0) internal successors, (1048), 8 states have internal predecessors, (1048), 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) [2021-03-24 19:56:37,250 INFO L185 Difference]: Start difference. First operand has 50 places, 38 transitions, 200 flow. Second operand 7 states and 759 transitions. [2021-03-24 19:56:37,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 51 transitions, 334 flow [2021-03-24 19:56:37,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 51 transitions, 329 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 19:56:37,252 INFO L241 Difference]: Finished difference. Result has 58 places, 47 transitions, 329 flow [2021-03-24 19:56:37,252 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=329, PETRI_PLACES=58, PETRI_TRANSITIONS=47} [2021-03-24 19:56:37,253 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 20 predicate places. [2021-03-24 19:56:37,253 INFO L480 AbstractCegarLoop]: Abstraction has has 58 places, 47 transitions, 329 flow [2021-03-24 19:56:37,253 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 104.8) internal successors, (524), 5 states have internal predecessors, (524), 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) [2021-03-24 19:56:37,253 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:56:37,253 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:56:37,253 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 19:56:37,253 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:56:37,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:56:37,254 INFO L82 PathProgramCache]: Analyzing trace with hash 480353036, now seen corresponding path program 1 times [2021-03-24 19:56:37,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:56:37,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972808566] [2021-03-24 19:56:37,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:56:37,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:56:37,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:37,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:56:37,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:37,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:37,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:37,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:37,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:37,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:37,304 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-24 19:56:37,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 19:56:37,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:37,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:56:37,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:56:37,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972808566] [2021-03-24 19:56:37,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:56:37,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 19:56:37,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458560797] [2021-03-24 19:56:37,314 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 19:56:37,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:56:37,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 19:56:37,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-24 19:56:37,315 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 131 [2021-03-24 19:56:37,316 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 47 transitions, 329 flow. Second operand has 6 states, 6 states have (on average 104.83333333333333) internal successors, (629), 6 states have internal predecessors, (629), 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) [2021-03-24 19:56:37,316 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:56:37,316 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 131 [2021-03-24 19:56:37,316 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:56:37,397 INFO L129 PetriNetUnfolder]: 123/278 cut-off events. [2021-03-24 19:56:37,397 INFO L130 PetriNetUnfolder]: For 1110/2040 co-relation queries the response was YES. [2021-03-24 19:56:37,398 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1503 conditions, 278 events. 123/278 cut-off events. For 1110/2040 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 1376 event pairs, 7 based on Foata normal form. 133/385 useless extension candidates. Maximal degree in co-relation 1474. Up to 226 conditions per place. [2021-03-24 19:56:37,399 INFO L132 encePairwiseOnDemand]: 124/131 looper letters, 6 selfloop transitions, 28 changer transitions 4/60 dead transitions. [2021-03-24 19:56:37,399 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 60 transitions, 531 flow [2021-03-24 19:56:37,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 19:56:37,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 19:56:37,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 976 transitions. [2021-03-24 19:56:37,401 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8278201865988125 [2021-03-24 19:56:37,401 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 976 transitions. [2021-03-24 19:56:37,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 976 transitions. [2021-03-24 19:56:37,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:56:37,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 976 transitions. [2021-03-24 19:56:37,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 108.44444444444444) internal successors, (976), 9 states have internal predecessors, (976), 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) [2021-03-24 19:56:37,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 131.0) internal successors, (1310), 10 states have internal predecessors, (1310), 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) [2021-03-24 19:56:37,405 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 131.0) internal successors, (1310), 10 states have internal predecessors, (1310), 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) [2021-03-24 19:56:37,405 INFO L185 Difference]: Start difference. First operand has 58 places, 47 transitions, 329 flow. Second operand 9 states and 976 transitions. [2021-03-24 19:56:37,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 60 transitions, 531 flow [2021-03-24 19:56:37,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 60 transitions, 481 flow, removed 17 selfloop flow, removed 3 redundant places. [2021-03-24 19:56:37,410 INFO L241 Difference]: Finished difference. Result has 66 places, 56 transitions, 457 flow [2021-03-24 19:56:37,410 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=457, PETRI_PLACES=66, PETRI_TRANSITIONS=56} [2021-03-24 19:56:37,410 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 28 predicate places. [2021-03-24 19:56:37,410 INFO L480 AbstractCegarLoop]: Abstraction has has 66 places, 56 transitions, 457 flow [2021-03-24 19:56:37,410 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 104.83333333333333) internal successors, (629), 6 states have internal predecessors, (629), 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) [2021-03-24 19:56:37,410 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:56:37,411 INFO L263 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] [2021-03-24 19:56:37,411 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-24 19:56:37,411 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:56:37,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:56:37,411 INFO L82 PathProgramCache]: Analyzing trace with hash 2138040277, now seen corresponding path program 1 times [2021-03-24 19:56:37,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:56:37,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490753964] [2021-03-24 19:56:37,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:56:37,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:56:37,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:37,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:56:37,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:37,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:37,443 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 19:56:37,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 19:56:37,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:56:37,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490753964] [2021-03-24 19:56:37,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:56:37,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:56:37,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77581254] [2021-03-24 19:56:37,453 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:56:37,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:56:37,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:56:37,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:56:37,454 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 131 [2021-03-24 19:56:37,454 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 56 transitions, 457 flow. Second operand has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 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) [2021-03-24 19:56:37,455 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:56:37,455 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 131 [2021-03-24 19:56:37,455 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:56:37,504 INFO L129 PetriNetUnfolder]: 173/391 cut-off events. [2021-03-24 19:56:37,504 INFO L130 PetriNetUnfolder]: For 2244/2600 co-relation queries the response was YES. [2021-03-24 19:56:37,505 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2053 conditions, 391 events. 173/391 cut-off events. For 2244/2600 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 2264 event pairs, 5 based on Foata normal form. 8/361 useless extension candidates. Maximal degree in co-relation 2019. Up to 248 conditions per place. [2021-03-24 19:56:37,507 INFO L132 encePairwiseOnDemand]: 124/131 looper letters, 7 selfloop transitions, 9 changer transitions 0/59 dead transitions. [2021-03-24 19:56:37,507 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 59 transitions, 507 flow [2021-03-24 19:56:37,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 19:56:37,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 19:56:37,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 536 transitions. [2021-03-24 19:56:37,508 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8183206106870229 [2021-03-24 19:56:37,508 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 536 transitions. [2021-03-24 19:56:37,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 536 transitions. [2021-03-24 19:56:37,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:56:37,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 536 transitions. [2021-03-24 19:56:37,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.2) internal successors, (536), 5 states have internal predecessors, (536), 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) [2021-03-24 19:56:37,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 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) [2021-03-24 19:56:37,510 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 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) [2021-03-24 19:56:37,510 INFO L185 Difference]: Start difference. First operand has 66 places, 56 transitions, 457 flow. Second operand 5 states and 536 transitions. [2021-03-24 19:56:37,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 59 transitions, 507 flow [2021-03-24 19:56:37,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 59 transitions, 410 flow, removed 34 selfloop flow, removed 4 redundant places. [2021-03-24 19:56:37,521 INFO L241 Difference]: Finished difference. Result has 68 places, 59 transitions, 416 flow [2021-03-24 19:56:37,522 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=416, PETRI_PLACES=68, PETRI_TRANSITIONS=59} [2021-03-24 19:56:37,522 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 30 predicate places. [2021-03-24 19:56:37,522 INFO L480 AbstractCegarLoop]: Abstraction has has 68 places, 59 transitions, 416 flow [2021-03-24 19:56:37,523 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 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) [2021-03-24 19:56:37,523 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:56:37,523 INFO L263 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] [2021-03-24 19:56:37,523 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-24 19:56:37,523 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:56:37,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:56:37,523 INFO L82 PathProgramCache]: Analyzing trace with hash -2046162101, now seen corresponding path program 2 times [2021-03-24 19:56:37,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:56:37,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10900011] [2021-03-24 19:56:37,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:56:37,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:56:37,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:37,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:56:37,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:37,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:37,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:37,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:37,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:37,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:37,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:37,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:37,572 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-24 19:56:37,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 19:56:37,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:37,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:56:37,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:56:37,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10900011] [2021-03-24 19:56:37,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:56:37,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 19:56:37,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344438081] [2021-03-24 19:56:37,579 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 19:56:37,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:56:37,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 19:56:37,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 19:56:37,580 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 131 [2021-03-24 19:56:37,581 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 59 transitions, 416 flow. Second operand has 7 states, 7 states have (on average 104.85714285714286) internal successors, (734), 7 states have internal predecessors, (734), 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) [2021-03-24 19:56:37,581 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:56:37,581 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 131 [2021-03-24 19:56:37,581 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:56:37,689 INFO L129 PetriNetUnfolder]: 162/363 cut-off events. [2021-03-24 19:56:37,689 INFO L130 PetriNetUnfolder]: For 1100/1797 co-relation queries the response was YES. [2021-03-24 19:56:37,690 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1614 conditions, 363 events. 162/363 cut-off events. For 1100/1797 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 2074 event pairs, 0 based on Foata normal form. 181/508 useless extension candidates. Maximal degree in co-relation 1579. Up to 110 conditions per place. [2021-03-24 19:56:37,691 INFO L132 encePairwiseOnDemand]: 124/131 looper letters, 2 selfloop transitions, 33 changer transitions 4/64 dead transitions. [2021-03-24 19:56:37,691 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 64 transitions, 550 flow [2021-03-24 19:56:37,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-24 19:56:37,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-24 19:56:37,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1185 transitions. [2021-03-24 19:56:37,693 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8223455933379598 [2021-03-24 19:56:37,694 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1185 transitions. [2021-03-24 19:56:37,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1185 transitions. [2021-03-24 19:56:37,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:56:37,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1185 transitions. [2021-03-24 19:56:37,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 107.72727272727273) internal successors, (1185), 11 states have internal predecessors, (1185), 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) [2021-03-24 19:56:37,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 131.0) internal successors, (1572), 12 states have internal predecessors, (1572), 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) [2021-03-24 19:56:37,698 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 131.0) internal successors, (1572), 12 states have internal predecessors, (1572), 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) [2021-03-24 19:56:37,698 INFO L185 Difference]: Start difference. First operand has 68 places, 59 transitions, 416 flow. Second operand 11 states and 1185 transitions. [2021-03-24 19:56:37,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 64 transitions, 550 flow [2021-03-24 19:56:37,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 64 transitions, 526 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-03-24 19:56:37,703 INFO L241 Difference]: Finished difference. Result has 77 places, 60 transitions, 486 flow [2021-03-24 19:56:37,703 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=486, PETRI_PLACES=77, PETRI_TRANSITIONS=60} [2021-03-24 19:56:37,703 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 39 predicate places. [2021-03-24 19:56:37,703 INFO L480 AbstractCegarLoop]: Abstraction has has 77 places, 60 transitions, 486 flow [2021-03-24 19:56:37,704 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 104.85714285714286) internal successors, (734), 7 states have internal predecessors, (734), 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) [2021-03-24 19:56:37,704 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:56:37,704 INFO L263 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] [2021-03-24 19:56:37,704 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-24 19:56:37,704 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:56:37,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:56:37,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1227522298, now seen corresponding path program 1 times [2021-03-24 19:56:37,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:56:37,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249974201] [2021-03-24 19:56:37,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:56:37,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:56:37,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:37,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:56:37,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:37,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:37,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:56:37,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:56:37,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:56:37,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249974201] [2021-03-24 19:56:37,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:56:37,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:56:37,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288206702] [2021-03-24 19:56:37,745 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:56:37,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:56:37,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:56:37,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:56:37,746 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 131 [2021-03-24 19:56:37,747 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 60 transitions, 486 flow. Second operand has 4 states, 4 states have (on average 113.5) internal successors, (454), 4 states have internal predecessors, (454), 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) [2021-03-24 19:56:37,747 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:56:37,747 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 131 [2021-03-24 19:56:37,747 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:56:37,781 INFO L129 PetriNetUnfolder]: 209/467 cut-off events. [2021-03-24 19:56:37,781 INFO L130 PetriNetUnfolder]: For 1531/1738 co-relation queries the response was YES. [2021-03-24 19:56:37,782 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2084 conditions, 467 events. 209/467 cut-off events. For 1531/1738 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 2945 event pairs, 0 based on Foata normal form. 5/424 useless extension candidates. Maximal degree in co-relation 2047. Up to 150 conditions per place. [2021-03-24 19:56:37,783 INFO L132 encePairwiseOnDemand]: 128/131 looper letters, 0 selfloop transitions, 0 changer transitions 61/61 dead transitions. [2021-03-24 19:56:37,783 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 61 transitions, 517 flow [2021-03-24 19:56:37,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 19:56:37,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 19:56:37,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 456 transitions. [2021-03-24 19:56:37,784 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8702290076335878 [2021-03-24 19:56:37,784 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 456 transitions. [2021-03-24 19:56:37,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 456 transitions. [2021-03-24 19:56:37,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:56:37,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 456 transitions. [2021-03-24 19:56:37,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 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) [2021-03-24 19:56:37,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 131.0) internal successors, (655), 5 states have internal predecessors, (655), 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) [2021-03-24 19:56:37,786 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 131.0) internal successors, (655), 5 states have internal predecessors, (655), 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) [2021-03-24 19:56:37,786 INFO L185 Difference]: Start difference. First operand has 77 places, 60 transitions, 486 flow. Second operand 4 states and 456 transitions. [2021-03-24 19:56:37,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 61 transitions, 517 flow [2021-03-24 19:56:37,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 61 transitions, 406 flow, removed 25 selfloop flow, removed 10 redundant places. [2021-03-24 19:56:37,793 INFO L241 Difference]: Finished difference. Result has 68 places, 0 transitions, 0 flow [2021-03-24 19:56:37,793 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=68, PETRI_TRANSITIONS=0} [2021-03-24 19:56:37,793 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 30 predicate places. [2021-03-24 19:56:37,793 INFO L480 AbstractCegarLoop]: Abstraction has has 68 places, 0 transitions, 0 flow [2021-03-24 19:56:37,794 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 113.5) internal successors, (454), 4 states have internal predecessors, (454), 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) [2021-03-24 19:56:37,794 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-24 19:56:37,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 07:56:37 BasicIcfg [2021-03-24 19:56:37,797 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 19:56:37,798 INFO L168 Benchmark]: Toolchain (without parser) took 3839.14 ms. Allocated memory was 255.9 MB in the beginning and 436.2 MB in the end (delta: 180.4 MB). Free memory was 235.7 MB in the beginning and 352.2 MB in the end (delta: -116.6 MB). Peak memory consumption was 63.2 MB. Max. memory is 16.0 GB. [2021-03-24 19:56:37,798 INFO L168 Benchmark]: CDTParser took 0.08 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 19:56:37,798 INFO L168 Benchmark]: CACSL2BoogieTranslator took 361.86 ms. Allocated memory was 255.9 MB in the beginning and 362.8 MB in the end (delta: 107.0 MB). Free memory was 235.1 MB in the beginning and 326.0 MB in the end (delta: -90.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-03-24 19:56:37,801 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.34 ms. Allocated memory is still 362.8 MB. Free memory was 326.0 MB in the beginning and 324.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 19:56:37,801 INFO L168 Benchmark]: Boogie Preprocessor took 13.53 ms. Allocated memory is still 362.8 MB. Free memory was 324.0 MB in the beginning and 322.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 19:56:37,801 INFO L168 Benchmark]: RCFGBuilder took 325.44 ms. Allocated memory is still 362.8 MB. Free memory was 322.7 MB in the beginning and 336.6 MB in the end (delta: -13.8 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.0 GB. [2021-03-24 19:56:37,801 INFO L168 Benchmark]: TraceAbstraction took 3094.76 ms. Allocated memory was 362.8 MB in the beginning and 436.2 MB in the end (delta: 73.4 MB). Free memory was 336.6 MB in the beginning and 352.2 MB in the end (delta: -15.7 MB). Peak memory consumption was 58.3 MB. Max. memory is 16.0 GB. [2021-03-24 19:56:37,808 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 361.86 ms. Allocated memory was 255.9 MB in the beginning and 362.8 MB in the end (delta: 107.0 MB). Free memory was 235.1 MB in the beginning and 326.0 MB in the end (delta: -90.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 40.34 ms. Allocated memory is still 362.8 MB. Free memory was 326.0 MB in the beginning and 324.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.53 ms. Allocated memory is still 362.8 MB. Free memory was 324.0 MB in the beginning and 322.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 325.44 ms. Allocated memory is still 362.8 MB. Free memory was 322.7 MB in the beginning and 336.6 MB in the end (delta: -13.8 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3094.76 ms. Allocated memory was 362.8 MB in the beginning and 436.2 MB in the end (delta: 73.4 MB). Free memory was 336.6 MB in the beginning and 352.2 MB in the end (delta: -15.7 MB). Peak memory consumption was 58.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1445.2ms, 81 PlacesBefore, 38 PlacesAfterwards, 69 TransitionsBefore, 25 TransitionsAfterwards, 1250 CoEnabledTransitionPairs, 4 FixpointIterations, 15 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 44 TotalNumberOfCompositions, 1387 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1029, positive: 995, positive conditional: 0, positive unconditional: 995, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 822, positive: 796, positive conditional: 0, positive unconditional: 796, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 822, positive: 796, positive conditional: 0, positive unconditional: 796, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 822, positive: 784, positive conditional: 0, positive unconditional: 784, negative: 38, negative conditional: 0, negative unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 38, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 123, positive: 42, positive conditional: 0, positive unconditional: 42, negative: 81, negative conditional: 0, negative unconditional: 81, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1029, positive: 199, positive conditional: 0, positive unconditional: 199, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 822, unknown conditional: 0, unknown unconditional: 822] , Statistics on independence cache: Total cache size (in pairs): 75, Positive cache size: 69, Positive conditional cache size: 0, Positive unconditional cache size: 69, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - 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 CFG has 5 procedures, 86 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3014.5ms, OverallIterations: 11, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 728.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1500.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 54 SDtfs, 58 SDslu, 42 SDs, 0 SdLazy, 224 SolverSat, 77 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 153.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 188.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=486occurred in iteration=10, InterpolantAutomatonStates: 61, 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: 19.6ms SsaConstructionTime, 160.3ms SatisfiabilityAnalysisTime, 462.4ms InterpolantComputationTime, 214 NumberOfCodeBlocks, 214 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 203 ConstructedInterpolants, 0 QuantifiedInterpolants, 731 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...