/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/safe013_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 21:14:21,648 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 21:14:21,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 21:14:21,674 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 21:14:21,675 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 21:14:21,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 21:14:21,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 21:14:21,685 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 21:14:21,686 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 21:14:21,690 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 21:14:21,691 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 21:14:21,692 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 21:14:21,692 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 21:14:21,693 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 21:14:21,695 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 21:14:21,695 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 21:14:21,696 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 21:14:21,697 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 21:14:21,701 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 21:14:21,704 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 21:14:21,705 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 21:14:21,706 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 21:14:21,707 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 21:14:21,708 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 21:14:21,711 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-10 21:14:21,717 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 21:14:21,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 21:14:21,717 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 21:14:21,720 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 [2021-06-10 21:14:21,744 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 21:14:21,744 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 21:14:21,745 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 21:14:21,745 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 21:14:21,745 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 21:14:21,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 21:14:21,745 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 21:14:21,745 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 21:14:21,746 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 21:14:21,746 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 21:14:21,746 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 21:14:21,746 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 21:14:21,746 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 21:14:21,746 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 21:14:21,746 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 21:14:21,746 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 21:14:21,746 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 21:14:21,746 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 21:14:21,746 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 21:14:21,747 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 21:14:21,747 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 21:14:21,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 21:14:21,747 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 21:14:21,747 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 21:14:21,747 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 21:14:21,747 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 21:14:21,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 21:14:21,747 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 21:14:21,747 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 21:14:21,966 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 21:14:21,982 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 21:14:21,984 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 21:14:21,985 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-10 21:14:21,985 INFO L275 PluginConnector]: CDTParser initialized [2021-06-10 21:14:21,986 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.opt.i [2021-06-10 21:14:22,039 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c27645cd3/61026a5d78984f0fb388958cab7ae344/FLAGd394c3b3b [2021-06-10 21:14:22,410 INFO L306 CDTParser]: Found 1 translation units. [2021-06-10 21:14:22,411 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe013_tso.opt.i [2021-06-10 21:14:22,423 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c27645cd3/61026a5d78984f0fb388958cab7ae344/FLAGd394c3b3b [2021-06-10 21:14:22,432 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c27645cd3/61026a5d78984f0fb388958cab7ae344 [2021-06-10 21:14:22,434 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 21:14:22,435 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-10 21:14:22,437 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-10 21:14:22,437 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-10 21:14:22,439 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-10 21:14:22,440 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 09:14:22" (1/1) ... [2021-06-10 21:14:22,441 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45c346 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:14:22, skipping insertion in model container [2021-06-10 21:14:22,441 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 09:14:22" (1/1) ... [2021-06-10 21:14:22,446 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-10 21:14:22,484 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-10 21:14:22,648 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/safe013_tso.opt.i[949,962] [2021-06-10 21:14:22,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 21:14:22,769 INFO L203 MainTranslator]: Completed pre-run [2021-06-10 21:14:22,777 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/safe013_tso.opt.i[949,962] [2021-06-10 21:14:22,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 21:14:22,847 INFO L208 MainTranslator]: Completed translation [2021-06-10 21:14:22,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:14:22 WrapperNode [2021-06-10 21:14:22,847 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-10 21:14:22,848 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 21:14:22,848 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 21:14:22,848 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 21:14:22,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:14:22" (1/1) ... [2021-06-10 21:14:22,860 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:14:22" (1/1) ... [2021-06-10 21:14:22,871 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 21:14:22,871 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 21:14:22,871 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 21:14:22,871 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 21:14:22,875 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:14:22" (1/1) ... [2021-06-10 21:14:22,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:14:22" (1/1) ... [2021-06-10 21:14:22,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:14:22" (1/1) ... [2021-06-10 21:14:22,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:14:22" (1/1) ... [2021-06-10 21:14:22,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:14:22" (1/1) ... [2021-06-10 21:14:22,890 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:14:22" (1/1) ... [2021-06-10 21:14:22,891 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:14:22" (1/1) ... [2021-06-10 21:14:22,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 21:14:22,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 21:14:22,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 21:14:22,894 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 21:14:22,894 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:14:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 21:14:23,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-10 21:14:23,015 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-10 21:14:23,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-10 21:14:23,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-10 21:14:23,015 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-10 21:14:23,016 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-10 21:14:23,016 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-10 21:14:23,016 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-10 21:14:23,016 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-10 21:14:23,016 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-10 21:14:23,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-10 21:14:23,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-10 21:14:23,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 21:14:23,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 21:14:23,017 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 21:14:23,279 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 21:14:23,280 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-10 21:14:23,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 09:14:23 BoogieIcfgContainer [2021-06-10 21:14:23,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 21:14:23,282 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 21:14:23,282 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 21:14:23,284 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 21:14:23,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.06 09:14:22" (1/3) ... [2021-06-10 21:14:23,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66705c93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 09:14:23, skipping insertion in model container [2021-06-10 21:14:23,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:14:22" (2/3) ... [2021-06-10 21:14:23,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66705c93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 09:14:23, skipping insertion in model container [2021-06-10 21:14:23,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 09:14:23" (3/3) ... [2021-06-10 21:14:23,286 INFO L111 eAbstractionObserver]: Analyzing ICFG safe013_tso.opt.i [2021-06-10 21:14:23,289 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 21:14:23,292 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-10 21:14:23,292 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 21:14:23,308 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:23,309 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:23,309 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:23,309 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:23,309 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:23,309 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:23,309 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:23,309 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:23,310 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:23,310 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:23,310 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:23,310 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:23,310 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:23,310 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:23,310 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:23,310 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:23,311 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:23,311 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:23,311 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:23,311 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:23,311 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:23,311 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:23,311 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:23,312 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:23,312 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:23,312 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:23,312 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:23,312 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:23,312 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:23,312 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:23,312 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:23,312 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:23,313 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:23,313 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:23,313 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:23,313 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:23,317 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:23,318 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:23,318 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:23,318 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:23,322 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:23,322 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:23,322 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:23,323 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:23,326 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:23,327 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:23,327 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:23,327 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:23,328 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-10 21:14:23,340 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-10 21:14:23,353 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 21:14:23,353 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 21:14:23,353 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 21:14:23,353 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 21:14:23,353 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 21:14:23,353 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 21:14:23,353 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 21:14:23,353 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 21:14:23,360 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-06-10 21:14:23,386 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-06-10 21:14:23,386 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:14:23,392 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-06-10 21:14:23,392 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-06-10 21:14:23,396 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-06-10 21:14:23,397 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-10 21:14:23,405 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 60 transitions, 129 flow [2021-06-10 21:14:23,409 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 60 transitions, 129 flow [2021-06-10 21:14:23,411 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 129 flow [2021-06-10 21:14:23,436 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-06-10 21:14:23,436 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:14:23,437 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 60 events. 1/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-06-10 21:14:23,439 INFO L151 LiptonReduction]: Number of co-enabled transitions 864 [2021-06-10 21:14:23,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:23,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:14:23,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:23,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:14:23,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:23,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:14:23,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:14:23,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:23,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:14:23,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:23,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:14:23,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:23,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:14:23,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:23,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:14:23,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:23,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:14:23,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:23,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:14:23,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:23,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:14:23,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:23,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:14:23,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:23,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:14:23,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:23,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:14:23,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:23,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:14:23,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:23,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:14:23,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:23,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:14:23,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:14:23,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:23,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:14:23,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:23,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:14:23,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:23,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:14:23,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:14:24,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:24,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:14:24,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:24,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:14:24,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:14:24,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:24,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:14:24,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:24,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:14:24,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:24,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:14:24,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:24,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 21:14:24,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:14:24,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:24,256 INFO L147 QuantifierPusher]: treesize reduction 22, result has 4.3 percent of original size 1 [2021-06-10 21:14:24,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:24,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:14:24,320 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-06-10 21:14:24,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:14:24,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:24,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:14:24,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:24,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:14:24,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:14:24,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:24,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:14:24,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:24,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:14:24,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:24,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:14:24,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:24,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:14:24,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:24,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:14:24,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:24,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:14:25,224 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2021-06-10 21:14:25,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:25,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:14:25,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:25,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:14:25,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 21:14:25,423 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-06-10 21:14:25,604 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-06-10 21:14:25,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:25,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:14:25,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:25,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:14:25,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:14:25,680 INFO L163 LiptonReduction]: Checked pairs total: 1594 [2021-06-10 21:14:25,680 INFO L165 LiptonReduction]: Total number of compositions: 46 [2021-06-10 21:14:25,681 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2284 [2021-06-10 21:14:25,687 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2021-06-10 21:14:25,687 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:14:25,687 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:14:25,687 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:14:25,687 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:14:25,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:14:25,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1978481777, now seen corresponding path program 1 times [2021-06-10 21:14:25,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:14:25,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232804917] [2021-06-10 21:14:25,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:14:25,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:14:25,813 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 21:14:25,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:14:25,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:14:25,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232804917] [2021-06-10 21:14:25,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:14:25,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-10 21:14:25,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231026006] [2021-06-10 21:14:25,831 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 21:14:25,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:14:25,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 21:14:25,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 21:14:25,840 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 121 [2021-06-10 21:14:25,843 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:14:25,843 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:14:25,843 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 121 [2021-06-10 21:14:25,844 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:14:25,865 INFO L129 PetriNetUnfolder]: 11/52 cut-off events. [2021-06-10 21:14:25,866 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:14:25,866 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 52 events. 11/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 166 event pairs, 7 based on Foata normal form. 4/54 useless extension candidates. Maximal degree in co-relation 85. Up to 26 conditions per place. [2021-06-10 21:14:25,867 INFO L132 encePairwiseOnDemand]: 115/121 looper letters, 4 selfloop transitions, 5 changer transitions 0/20 dead transitions. [2021-06-10 21:14:25,867 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 20 transitions, 67 flow [2021-06-10 21:14:25,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 21:14:25,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 21:14:25,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 286 transitions. [2021-06-10 21:14:25,880 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7878787878787878 [2021-06-10 21:14:25,880 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 286 transitions. [2021-06-10 21:14:25,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 286 transitions. [2021-06-10 21:14:25,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:14:25,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 286 transitions. [2021-06-10 21:14:25,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:14:25,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:14:25,893 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:14:25,895 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 286 transitions. [2021-06-10 21:14:25,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 20 transitions, 67 flow [2021-06-10 21:14:25,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 20 transitions, 64 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-06-10 21:14:25,897 INFO L241 Difference]: Finished difference. Result has 27 places, 20 transitions, 69 flow [2021-06-10 21:14:25,899 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=27, PETRI_TRANSITIONS=20} [2021-06-10 21:14:25,899 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2021-06-10 21:14:25,899 INFO L480 AbstractCegarLoop]: Abstraction has has 27 places, 20 transitions, 69 flow [2021-06-10 21:14:25,899 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:14:25,899 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:14:25,900 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:14:25,900 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 21:14:25,900 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:14:25,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:14:25,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1203392391, now seen corresponding path program 1 times [2021-06-10 21:14:25,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:14:25,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75688674] [2021-06-10 21:14:25,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:14:25,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:14:25,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:25,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:14:25,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:14:25,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75688674] [2021-06-10 21:14:25,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:14:25,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-10 21:14:25,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148601671] [2021-06-10 21:14:25,956 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 21:14:25,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:14:25,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 21:14:25,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 21:14:25,957 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 121 [2021-06-10 21:14:25,958 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 69 flow. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:14:25,958 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:14:25,958 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 121 [2021-06-10 21:14:25,958 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:14:25,965 INFO L129 PetriNetUnfolder]: 8/45 cut-off events. [2021-06-10 21:14:25,965 INFO L130 PetriNetUnfolder]: For 13/16 co-relation queries the response was YES. [2021-06-10 21:14:25,965 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 45 events. 8/45 cut-off events. For 13/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 121 event pairs, 4 based on Foata normal form. 1/45 useless extension candidates. Maximal degree in co-relation 87. Up to 21 conditions per place. [2021-06-10 21:14:25,965 INFO L132 encePairwiseOnDemand]: 118/121 looper letters, 1 selfloop transitions, 3 changer transitions 0/20 dead transitions. [2021-06-10 21:14:25,965 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 20 transitions, 77 flow [2021-06-10 21:14:25,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 21:14:25,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 21:14:25,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 307 transitions. [2021-06-10 21:14:25,969 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8457300275482094 [2021-06-10 21:14:25,969 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 307 transitions. [2021-06-10 21:14:25,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 307 transitions. [2021-06-10 21:14:25,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:14:25,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 307 transitions. [2021-06-10 21:14:25,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:14:25,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:14:25,971 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:14:25,971 INFO L185 Difference]: Start difference. First operand has 27 places, 20 transitions, 69 flow. Second operand 3 states and 307 transitions. [2021-06-10 21:14:25,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 20 transitions, 77 flow [2021-06-10 21:14:25,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 20 transitions, 72 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 21:14:25,972 INFO L241 Difference]: Finished difference. Result has 29 places, 20 transitions, 75 flow [2021-06-10 21:14:25,972 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=29, PETRI_TRANSITIONS=20} [2021-06-10 21:14:25,972 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2021-06-10 21:14:25,972 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 20 transitions, 75 flow [2021-06-10 21:14:25,972 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:14:25,973 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:14:25,973 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:14:25,973 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 21:14:25,973 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:14:25,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:14:25,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1203392267, now seen corresponding path program 1 times [2021-06-10 21:14:25,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:14:25,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986666458] [2021-06-10 21:14:25,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:14:25,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:14:26,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:26,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:14:26,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:14:26,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986666458] [2021-06-10 21:14:26,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:14:26,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-10 21:14:26,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072712382] [2021-06-10 21:14:26,034 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 21:14:26,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:14:26,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 21:14:26,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 21:14:26,035 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 121 [2021-06-10 21:14:26,036 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 20 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:14:26,036 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:14:26,036 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 121 [2021-06-10 21:14:26,036 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:14:26,046 INFO L129 PetriNetUnfolder]: 6/40 cut-off events. [2021-06-10 21:14:26,046 INFO L130 PetriNetUnfolder]: For 19/24 co-relation queries the response was YES. [2021-06-10 21:14:26,046 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 40 events. 6/40 cut-off events. For 19/24 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 96 event pairs, 3 based on Foata normal form. 2/41 useless extension candidates. Maximal degree in co-relation 86. Up to 18 conditions per place. [2021-06-10 21:14:26,047 INFO L132 encePairwiseOnDemand]: 117/121 looper letters, 3 selfloop transitions, 4 changer transitions 0/22 dead transitions. [2021-06-10 21:14:26,047 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 22 transitions, 97 flow [2021-06-10 21:14:26,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 21:14:26,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 21:14:26,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 304 transitions. [2021-06-10 21:14:26,051 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.837465564738292 [2021-06-10 21:14:26,051 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 304 transitions. [2021-06-10 21:14:26,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 304 transitions. [2021-06-10 21:14:26,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:14:26,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 304 transitions. [2021-06-10 21:14:26,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:14:26,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:14:26,053 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:14:26,053 INFO L185 Difference]: Start difference. First operand has 29 places, 20 transitions, 75 flow. Second operand 3 states and 304 transitions. [2021-06-10 21:14:26,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 22 transitions, 97 flow [2021-06-10 21:14:26,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 22 transitions, 91 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-10 21:14:26,054 INFO L241 Difference]: Finished difference. Result has 30 places, 22 transitions, 95 flow [2021-06-10 21:14:26,055 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2021-06-10 21:14:26,055 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2021-06-10 21:14:26,055 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 95 flow [2021-06-10 21:14:26,055 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:14:26,055 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:14:26,055 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:14:26,055 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 21:14:26,055 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:14:26,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:14:26,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1349218579, now seen corresponding path program 1 times [2021-06-10 21:14:26,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:14:26,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059393428] [2021-06-10 21:14:26,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:14:26,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:14:26,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:26,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:14:26,092 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 21:14:26,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:14:26,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:14:26,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059393428] [2021-06-10 21:14:26,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:14:26,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 21:14:26,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041835582] [2021-06-10 21:14:26,098 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:14:26,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:14:26,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:14:26,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:14:26,099 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 121 [2021-06-10 21:14:26,099 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:14:26,099 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:14:26,099 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 121 [2021-06-10 21:14:26,099 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:14:26,128 INFO L129 PetriNetUnfolder]: 33/102 cut-off events. [2021-06-10 21:14:26,128 INFO L130 PetriNetUnfolder]: For 77/103 co-relation queries the response was YES. [2021-06-10 21:14:26,129 INFO L84 FinitePrefix]: Finished finitePrefix Result has 292 conditions, 102 events. 33/102 cut-off events. For 77/103 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 404 event pairs, 0 based on Foata normal form. 11/111 useless extension candidates. Maximal degree in co-relation 279. Up to 38 conditions per place. [2021-06-10 21:14:26,129 INFO L132 encePairwiseOnDemand]: 114/121 looper letters, 11 selfloop transitions, 18 changer transitions 0/39 dead transitions. [2021-06-10 21:14:26,129 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 39 transitions, 248 flow [2021-06-10 21:14:26,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-10 21:14:26,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-10 21:14:26,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 472 transitions. [2021-06-10 21:14:26,131 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7801652892561983 [2021-06-10 21:14:26,131 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 472 transitions. [2021-06-10 21:14:26,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 472 transitions. [2021-06-10 21:14:26,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:14:26,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 472 transitions. [2021-06-10 21:14:26,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.4) internal successors, (472), 5 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:14:26,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 121.0) internal successors, (726), 6 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:14:26,133 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 121.0) internal successors, (726), 6 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:14:26,133 INFO L185 Difference]: Start difference. First operand has 30 places, 22 transitions, 95 flow. Second operand 5 states and 472 transitions. [2021-06-10 21:14:26,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 39 transitions, 248 flow [2021-06-10 21:14:26,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 39 transitions, 239 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 21:14:26,135 INFO L241 Difference]: Finished difference. Result has 37 places, 35 transitions, 249 flow [2021-06-10 21:14:26,135 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=249, PETRI_PLACES=37, PETRI_TRANSITIONS=35} [2021-06-10 21:14:26,135 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2021-06-10 21:14:26,135 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 35 transitions, 249 flow [2021-06-10 21:14:26,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:14:26,135 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:14:26,135 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:14:26,136 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 21:14:26,136 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:14:26,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:14:26,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1349545939, now seen corresponding path program 2 times [2021-06-10 21:14:26,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:14:26,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422828768] [2021-06-10 21:14:26,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:14:26,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:14:26,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:26,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:14:26,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:26,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:14:26,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:14:26,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422828768] [2021-06-10 21:14:26,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:14:26,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 21:14:26,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863806657] [2021-06-10 21:14:26,160 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:14:26,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:14:26,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:14:26,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:14:26,161 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 121 [2021-06-10 21:14:26,161 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 35 transitions, 249 flow. Second operand has 4 states, 4 states have (on average 96.75) internal successors, (387), 4 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:14:26,161 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:14:26,161 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 121 [2021-06-10 21:14:26,161 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:14:26,178 INFO L129 PetriNetUnfolder]: 18/86 cut-off events. [2021-06-10 21:14:26,178 INFO L130 PetriNetUnfolder]: For 267/318 co-relation queries the response was YES. [2021-06-10 21:14:26,178 INFO L84 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 86 events. 18/86 cut-off events. For 267/318 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 355 event pairs, 3 based on Foata normal form. 16/100 useless extension candidates. Maximal degree in co-relation 292. Up to 35 conditions per place. [2021-06-10 21:14:26,179 INFO L132 encePairwiseOnDemand]: 117/121 looper letters, 1 selfloop transitions, 5 changer transitions 11/35 dead transitions. [2021-06-10 21:14:26,179 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 35 transitions, 265 flow [2021-06-10 21:14:26,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 21:14:26,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 21:14:26,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 391 transitions. [2021-06-10 21:14:26,180 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8078512396694215 [2021-06-10 21:14:26,180 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 391 transitions. [2021-06-10 21:14:26,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 391 transitions. [2021-06-10 21:14:26,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:14:26,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 391 transitions. [2021-06-10 21:14:26,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.75) internal successors, (391), 4 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:14:26,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:14:26,182 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:14:26,182 INFO L185 Difference]: Start difference. First operand has 37 places, 35 transitions, 249 flow. Second operand 4 states and 391 transitions. [2021-06-10 21:14:26,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 35 transitions, 265 flow [2021-06-10 21:14:26,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 35 transitions, 263 flow, removed 1 selfloop flow, removed 0 redundant places. [2021-06-10 21:14:26,184 INFO L241 Difference]: Finished difference. Result has 42 places, 24 transitions, 172 flow [2021-06-10 21:14:26,184 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=172, PETRI_PLACES=42, PETRI_TRANSITIONS=24} [2021-06-10 21:14:26,184 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2021-06-10 21:14:26,184 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 24 transitions, 172 flow [2021-06-10 21:14:26,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 96.75) internal successors, (387), 4 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:14:26,185 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:14:26,185 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:14:26,185 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-10 21:14:26,185 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:14:26,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:14:26,185 INFO L82 PathProgramCache]: Analyzing trace with hash -901935181, now seen corresponding path program 1 times [2021-06-10 21:14:26,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:14:26,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917388372] [2021-06-10 21:14:26,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:14:26,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:14:26,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:26,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:14:26,213 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 21:14:26,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 21:14:26,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:14:26,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917388372] [2021-06-10 21:14:26,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:14:26,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 21:14:26,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210799624] [2021-06-10 21:14:26,225 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:14:26,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:14:26,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:14:26,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:14:26,226 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 121 [2021-06-10 21:14:26,226 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 24 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:14:26,226 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:14:26,226 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 121 [2021-06-10 21:14:26,227 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:14:26,274 INFO L129 PetriNetUnfolder]: 69/165 cut-off events. [2021-06-10 21:14:26,275 INFO L130 PetriNetUnfolder]: For 921/980 co-relation queries the response was YES. [2021-06-10 21:14:26,275 INFO L84 FinitePrefix]: Finished finitePrefix Result has 512 conditions, 165 events. 69/165 cut-off events. For 921/980 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 759 event pairs, 10 based on Foata normal form. 20/168 useless extension candidates. Maximal degree in co-relation 490. Up to 74 conditions per place. [2021-06-10 21:14:26,276 INFO L132 encePairwiseOnDemand]: 115/121 looper letters, 8 selfloop transitions, 5 changer transitions 0/31 dead transitions. [2021-06-10 21:14:26,276 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 31 transitions, 212 flow [2021-06-10 21:14:26,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 21:14:26,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 21:14:26,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 367 transitions. [2021-06-10 21:14:26,277 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7582644628099173 [2021-06-10 21:14:26,277 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 367 transitions. [2021-06-10 21:14:26,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 367 transitions. [2021-06-10 21:14:26,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:14:26,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 367 transitions. [2021-06-10 21:14:26,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:14:26,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:14:26,279 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:14:26,279 INFO L185 Difference]: Start difference. First operand has 42 places, 24 transitions, 172 flow. Second operand 4 states and 367 transitions. [2021-06-10 21:14:26,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 31 transitions, 212 flow [2021-06-10 21:14:26,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 31 transitions, 157 flow, removed 7 selfloop flow, removed 9 redundant places. [2021-06-10 21:14:26,281 INFO L241 Difference]: Finished difference. Result has 38 places, 28 transitions, 155 flow [2021-06-10 21:14:26,281 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=155, PETRI_PLACES=38, PETRI_TRANSITIONS=28} [2021-06-10 21:14:26,281 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2021-06-10 21:14:26,281 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 28 transitions, 155 flow [2021-06-10 21:14:26,281 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:14:26,281 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:14:26,281 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:14:26,282 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-10 21:14:26,282 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:14:26,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:14:26,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1890510203, now seen corresponding path program 1 times [2021-06-10 21:14:26,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:14:26,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493518006] [2021-06-10 21:14:26,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:14:26,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:14:26,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:26,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:14:26,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:26,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:14:26,319 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 21:14:26,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 21:14:26,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:14:26,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493518006] [2021-06-10 21:14:26,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:14:26,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 21:14:26,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030099464] [2021-06-10 21:14:26,333 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-10 21:14:26,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:14:26,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-10 21:14:26,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-10 21:14:26,334 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 121 [2021-06-10 21:14:26,334 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 28 transitions, 155 flow. Second operand has 5 states, 5 states have (on average 88.8) internal successors, (444), 5 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:14:26,334 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:14:26,334 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 121 [2021-06-10 21:14:26,334 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:14:26,389 INFO L129 PetriNetUnfolder]: 50/142 cut-off events. [2021-06-10 21:14:26,389 INFO L130 PetriNetUnfolder]: For 286/427 co-relation queries the response was YES. [2021-06-10 21:14:26,390 INFO L84 FinitePrefix]: Finished finitePrefix Result has 490 conditions, 142 events. 50/142 cut-off events. For 286/427 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 672 event pairs, 1 based on Foata normal form. 34/157 useless extension candidates. Maximal degree in co-relation 473. Up to 99 conditions per place. [2021-06-10 21:14:26,390 INFO L132 encePairwiseOnDemand]: 115/121 looper letters, 9 selfloop transitions, 8 changer transitions 0/35 dead transitions. [2021-06-10 21:14:26,391 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 35 transitions, 218 flow [2021-06-10 21:14:26,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-10 21:14:26,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-10 21:14:26,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 459 transitions. [2021-06-10 21:14:26,393 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7586776859504132 [2021-06-10 21:14:26,393 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 459 transitions. [2021-06-10 21:14:26,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 459 transitions. [2021-06-10 21:14:26,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:14:26,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 459 transitions. [2021-06-10 21:14:26,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.8) internal successors, (459), 5 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) [2021-06-10 21:14:26,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 121.0) internal successors, (726), 6 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:14:26,395 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 121.0) internal successors, (726), 6 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:14:26,395 INFO L185 Difference]: Start difference. First operand has 38 places, 28 transitions, 155 flow. Second operand 5 states and 459 transitions. [2021-06-10 21:14:26,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 35 transitions, 218 flow [2021-06-10 21:14:26,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 35 transitions, 215 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 21:14:26,397 INFO L241 Difference]: Finished difference. Result has 43 places, 32 transitions, 207 flow [2021-06-10 21:14:26,397 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=207, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2021-06-10 21:14:26,397 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2021-06-10 21:14:26,397 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 207 flow [2021-06-10 21:14:26,397 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 88.8) internal successors, (444), 5 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:14:26,397 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:14:26,397 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:14:26,397 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-10 21:14:26,397 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:14:26,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:14:26,398 INFO L82 PathProgramCache]: Analyzing trace with hash 886562916, now seen corresponding path program 1 times [2021-06-10 21:14:26,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:14:26,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943593940] [2021-06-10 21:14:26,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:14:26,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:14:26,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:26,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:14:26,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:26,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:14:26,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:26,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:14:26,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:14:26,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943593940] [2021-06-10 21:14:26,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:14:26,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 21:14:26,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596860657] [2021-06-10 21:14:26,440 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:14:26,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:14:26,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:14:26,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:14:26,441 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 121 [2021-06-10 21:14:26,442 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 207 flow. Second operand has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:14:26,442 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:14:26,442 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 121 [2021-06-10 21:14:26,442 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:14:26,466 INFO L129 PetriNetUnfolder]: 55/172 cut-off events. [2021-06-10 21:14:26,467 INFO L130 PetriNetUnfolder]: For 484/595 co-relation queries the response was YES. [2021-06-10 21:14:26,467 INFO L84 FinitePrefix]: Finished finitePrefix Result has 640 conditions, 172 events. 55/172 cut-off events. For 484/595 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 948 event pairs, 1 based on Foata normal form. 18/162 useless extension candidates. Maximal degree in co-relation 620. Up to 120 conditions per place. [2021-06-10 21:14:26,467 INFO L132 encePairwiseOnDemand]: 118/121 looper letters, 3 selfloop transitions, 2 changer transitions 6/33 dead transitions. [2021-06-10 21:14:26,467 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 33 transitions, 223 flow [2021-06-10 21:14:26,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 21:14:26,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 21:14:26,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 390 transitions. [2021-06-10 21:14:26,468 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8057851239669421 [2021-06-10 21:14:26,468 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 390 transitions. [2021-06-10 21:14:26,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 390 transitions. [2021-06-10 21:14:26,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:14:26,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 390 transitions. [2021-06-10 21:14:26,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.5) internal successors, (390), 4 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:14:26,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:14:26,471 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:14:26,471 INFO L185 Difference]: Start difference. First operand has 43 places, 32 transitions, 207 flow. Second operand 4 states and 390 transitions. [2021-06-10 21:14:26,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 33 transitions, 223 flow [2021-06-10 21:14:26,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 33 transitions, 211 flow, removed 3 selfloop flow, removed 2 redundant places. [2021-06-10 21:14:26,473 INFO L241 Difference]: Finished difference. Result has 46 places, 27 transitions, 174 flow [2021-06-10 21:14:26,473 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=46, PETRI_TRANSITIONS=27} [2021-06-10 21:14:26,474 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 19 predicate places. [2021-06-10 21:14:26,474 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 27 transitions, 174 flow [2021-06-10 21:14:26,474 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:14:26,474 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:14:26,474 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:14:26,474 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-10 21:14:26,474 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:14:26,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:14:26,474 INFO L82 PathProgramCache]: Analyzing trace with hash 210852868, now seen corresponding path program 2 times [2021-06-10 21:14:26,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:14:26,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287845532] [2021-06-10 21:14:26,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:14:26,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:14:26,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:26,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:14:26,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:26,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:14:26,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:26,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:14:26,516 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 21:14:26,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 21:14:26,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:14:26,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287845532] [2021-06-10 21:14:26,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:14:26,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-10 21:14:26,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660056095] [2021-06-10 21:14:26,528 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-10 21:14:26,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:14:26,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-10 21:14:26,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-06-10 21:14:26,529 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 121 [2021-06-10 21:14:26,530 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 27 transitions, 174 flow. Second operand has 6 states, 6 states have (on average 88.83333333333333) internal successors, (533), 6 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:14:26,530 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:14:26,530 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 121 [2021-06-10 21:14:26,530 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:14:26,579 INFO L129 PetriNetUnfolder]: 18/84 cut-off events. [2021-06-10 21:14:26,579 INFO L130 PetriNetUnfolder]: For 231/288 co-relation queries the response was YES. [2021-06-10 21:14:26,579 INFO L84 FinitePrefix]: Finished finitePrefix Result has 337 conditions, 84 events. 18/84 cut-off events. For 231/288 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 352 event pairs, 1 based on Foata normal form. 30/110 useless extension candidates. Maximal degree in co-relation 316. Up to 35 conditions per place. [2021-06-10 21:14:26,579 INFO L132 encePairwiseOnDemand]: 115/121 looper letters, 0 selfloop transitions, 0 changer transitions 27/27 dead transitions. [2021-06-10 21:14:26,580 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 27 transitions, 184 flow [2021-06-10 21:14:26,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-10 21:14:26,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-06-10 21:14:26,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 540 transitions. [2021-06-10 21:14:26,581 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.743801652892562 [2021-06-10 21:14:26,581 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 540 transitions. [2021-06-10 21:14:26,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 540 transitions. [2021-06-10 21:14:26,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:14:26,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 540 transitions. [2021-06-10 21:14:26,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:14:26,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 121.0) internal successors, (847), 7 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:14:26,583 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 121.0) internal successors, (847), 7 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:14:26,583 INFO L185 Difference]: Start difference. First operand has 46 places, 27 transitions, 174 flow. Second operand 6 states and 540 transitions. [2021-06-10 21:14:26,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 27 transitions, 184 flow [2021-06-10 21:14:26,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 27 transitions, 158 flow, removed 0 selfloop flow, removed 7 redundant places. [2021-06-10 21:14:26,584 INFO L241 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2021-06-10 21:14:26,584 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2021-06-10 21:14:26,584 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2021-06-10 21:14:26,584 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2021-06-10 21:14:26,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 88.83333333333333) internal successors, (533), 6 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:14:26,585 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-10 21:14:26,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 09:14:26 BasicIcfg [2021-06-10 21:14:26,587 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 21:14:26,589 INFO L168 Benchmark]: Toolchain (without parser) took 4153.02 ms. Allocated memory was 373.3 MB in the beginning and 448.8 MB in the end (delta: 75.5 MB). Free memory was 336.2 MB in the beginning and 418.7 MB in the end (delta: -82.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 21:14:26,591 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 373.3 MB. Free memory was 354.1 MB in the beginning and 354.0 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 21:14:26,592 INFO L168 Benchmark]: CACSL2BoogieTranslator took 410.64 ms. Allocated memory is still 373.3 MB. Free memory was 336.0 MB in the beginning and 335.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.0 GB. [2021-06-10 21:14:26,592 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.77 ms. Allocated memory is still 373.3 MB. Free memory was 335.0 MB in the beginning and 332.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 21:14:26,592 INFO L168 Benchmark]: Boogie Preprocessor took 21.95 ms. Allocated memory is still 373.3 MB. Free memory was 332.9 MB in the beginning and 331.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 21:14:26,592 INFO L168 Benchmark]: RCFGBuilder took 387.21 ms. Allocated memory is still 373.3 MB. Free memory was 331.8 MB in the beginning and 307.7 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-06-10 21:14:26,593 INFO L168 Benchmark]: TraceAbstraction took 3305.34 ms. Allocated memory was 373.3 MB in the beginning and 448.8 MB in the end (delta: 75.5 MB). Free memory was 306.7 MB in the beginning and 418.7 MB in the end (delta: -112.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 21:14:26,595 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 373.3 MB. Free memory was 354.1 MB in the beginning and 354.0 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 410.64 ms. Allocated memory is still 373.3 MB. Free memory was 336.0 MB in the beginning and 335.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 22.77 ms. Allocated memory is still 373.3 MB. Free memory was 335.0 MB in the beginning and 332.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 21.95 ms. Allocated memory is still 373.3 MB. Free memory was 332.9 MB in the beginning and 331.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 387.21 ms. Allocated memory is still 373.3 MB. Free memory was 331.8 MB in the beginning and 307.7 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3305.34 ms. Allocated memory was 373.3 MB in the beginning and 448.8 MB in the end (delta: 75.5 MB). Free memory was 306.7 MB in the beginning and 418.7 MB in the end (delta: -112.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2270.6ms, 69 PlacesBefore, 27 PlacesAfterwards, 60 TransitionsBefore, 17 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 7 FixpointIterations, 18 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 46 TotalNumberOfCompositions, 1594 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1125, positive: 1039, positive conditional: 0, positive unconditional: 1039, negative: 86, negative conditional: 0, negative unconditional: 86, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 632, positive: 601, positive conditional: 0, positive unconditional: 601, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 632, positive: 601, positive conditional: 0, positive unconditional: 601, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 632, positive: 588, positive conditional: 0, positive unconditional: 588, negative: 44, negative conditional: 0, negative unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 44, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 126, positive: 36, positive conditional: 0, positive unconditional: 36, negative: 90, negative conditional: 0, negative unconditional: 90, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1125, positive: 438, positive conditional: 0, positive unconditional: 438, negative: 55, negative conditional: 0, negative unconditional: 55, unknown: 632, unknown conditional: 0, unknown unconditional: 632] , Statistics on independence cache: Total cache size (in pairs): 989, Positive cache size: 958, Positive conditional cache size: 0, Positive unconditional cache size: 958, Negative cache size: 31, Negative conditional cache size: 0, Negative unconditional cache size: 31 - 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 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3234.8ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 367.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2331.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 39 SDtfs, 15 SDslu, 18 SDs, 0 SdLazy, 78 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 80.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 104.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=249occurred in iteration=4, InterpolantAutomatonStates: 37, 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: 16.3ms SsaConstructionTime, 122.2ms SatisfiabilityAnalysisTime, 268.3ms InterpolantComputationTime, 101 NumberOfCodeBlocks, 101 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 412 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...